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#501 2023-04-23 04:35:47

Steve Stewart
Member
From: Kansas (USA)
Registered: 2019-09-21
Posts: 161
Website

Re: Technology Updates

Airbus has unveiled a space habitat called LOOP.
An article on Yahoo News states:

"At 26 feet wide (8 meters), LOOP is designed to fit into the fairing of the upcoming generation of superheavy launchers, such as SpaceX's Starship, and could thus be deployed with one launch and be habitable immediately after reaching orbit, Airbus said."

Airbus unveils futuristic space station concept (photos)
https://news.yahoo.com/airbus-unveils-f … 00488.html

Video by Airbus (40 sec)
https://www.airbus.com/en/airbus-loop


Habitat concept LOOP
"It builds on everything that has been learnt over the decades and fully exploits the potential of tomorrow’s technologies in order to best support humanity’s future in space: in low-Earth or lunar orbit, or on long-term missions to Mars."
358W2dk.jpg



Inside view of LOOP
"The Airbus LOOP is designed to make long-term stays in space comfortable and enjoyable for its inhabitants, while supporting efficient and sustainable operations at the same time,"
wFtY1xg.jpg



Centrifuge deck
"In its basic configuration, LOOP features a habitation deck, a science deck and a centrifuge deck producing artificial gravity, where inhabitants could receive temporary relief from zero-gravity conditions."
NC2naUh.jpg

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#502 2023-05-22 21:57:15

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,167

Re: Technology Updates

The article at the link below reports on successful tests of a new battery chemistry developed for Volkswagen...

https://www.msn.com/en-us/news/technolo … 64e2&ei=21

(th)

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#503 2023-05-23 11:15:32

Steve Stewart
Member
From: Kansas (USA)
Registered: 2019-09-21
Posts: 161
Website

Re: Technology Updates

From Yahoo News...

4SSq8b1.jpg

NASA Wants To Go To Mars On A Nuclear-Powered Rocket



Below is a 27 minute video from "Meet The Press Reports" called "The Race to Mars". In the video they talk about using a nuclear powered rocket to get to Mars (as mentioned in the article above).

9pv3K2l.jpg

Meet the Press Reports
27 minute video
The Race to Mars

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#504 2023-05-23 12:10:06

Void
Member
Registered: 2011-12-29
Posts: 7,105

Re: Technology Updates

I have seen some enjoyable posts here.  Thanks Steve Stewart and others.

Done


Done.

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#505 2023-05-28 11:33:52

Steve Stewart
Member
From: Kansas (USA)
Registered: 2019-09-21
Posts: 161
Website

Re: Technology Updates

From Gizmodo:

NASA's Blueprint for Sustainably Exploring the Moon and Mars Passes First Review
Gizmodo states: "The Architecture Definition Document describes NASA's plan for key partnerships, hardware, and operations for future human missions to the Moon and Mars."

Here is a link to NASA's Moon-to-Mars Architecture Definition Document mentioned in the article above.
The document is in a PDF format and is 158 pages long.
There is a lot to read, I'm still going through it.

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#506 2023-05-28 14:01:02

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,167

Re: Technology Updates

For Steve Stewart re #505

First, thank you for posting the link to the 158 page paper!

Second, for those of us who may be buried in activities of various kinds, please write a note or two here as you may be inspired!  I expect that a publication like this will have received a ** lot ** of attention before and during review, so it is likely to contain guidelines that would be useful for any non-NASA venture along these lines.

I expect the Chinese will be studying it carefully, for example, but there may well be other nations, or nation groups, who will be interested as well.

(th)

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#507 2023-05-28 18:21:01

SpaceNut
Administrator
From: New Hampshire
Registered: 2004-07-22
Posts: 28,880

Re: Technology Updates

Sustainable is a mis representation as that means several things not part of the plan description in the article.

The first Moon-to-Mars campaign segment, Human Lunar Return, establishes the initial capabilities, systems, and operations necessary to re-establish human presence on and around the Moon. It captures the missions that will test NASA’s deep-space crew and cargo transportation system (Space Launch System, Orion, Exploration Ground Systems), implement the initial portion of Gateway to support the lunar missions, deploy and establish a lunar orbital communications relay, exercise the Human Landing System by bringing two crew members to the lunar surface for ~6 days each year, and explore the lunar surface in search of science and resource sites of interest. This effort is instrumental in demonstrating key features of the architecture derived from the exploration objectives, such as cislunar aggregation, safe and reliable crew transportation, and integrated operations extended to the lunar environment.

Sure this sets up a constant but very slow process of staying on the moon phase but that is funding and use of them sensitive. It also contains nothing for Mars but hopes for development of mars equipment for use in the process of going to the moon's surface building to stay.
Mars does not have the conveniences of earth proximity that the moon has as that just a few days away with much small mass deliverables that mars can not work with. It means many decades are used in developing mars synergies from going to the moon.

Online

#508 2023-06-07 07:28:15

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,167

Re: Technology Updates

The NewMarsMember account received an email from a company today.

The email offered a link to an article they've written about technology trends.

Some of the content is worth noting (from my perspective)...

https://vention.io/blogs/five-rising-tr … Top_Trends

With the rise of Industry 4.0, there are more advancements than ever before for small and medium-sized businesses to profitably automate their manufacturing floor and withstand growing macroeconomic pressures. The strategic importance of industrial automation is one that can no longer be ignored, and in 2023, we believe these five trends will drive more manufacturers to adopt automation on their factory floors.


Vention has the solutions needed to support manufacturers in adopting industrial automation. Begin designing today or talk with our experts to learn more.

Quinn Harker
Written by Quinn Harker, Content Marketing Specialist

The comments about lack of qualified workers, and possible digital substitutions caught my eye.  AI did not appear to be a term in use in the article, but clever use of digital solutions appears to be a focus.

(th)

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#509 2023-06-07 11:02:31

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,167

Re: Technology Updates

A Chinese web site that Google found contains this paragraph about a Stirling engine:

Developed by the No. 711 Research Institute under the China State Shipbuilding Corporation Limited (CSSC), the basic prototype of China's first large-bore Stirling engine successfully conducted the recent performance test. The prototype ran at a rated power of 320 kilowatts with a power conversion efficiency of 40 percent, making it the most powerful Stirling engine known around the globe, the CSSC said in a press release published in its WeChat account on Tuesday.

The device is mentioned in connection with use of a nuclear reactor to supply heat.  A marine application would be ideal for such an engine, because the cool source is readily available.

(th)

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#510 2023-07-02 04:49:14

Mars_B4_Moon
Member
Registered: 2006-03-23
Posts: 9,267

Re: Technology Updates

A new future computer machine Cyborg language will come one day thanks to lasers and the light spectrum.

Microsoft's light-based computer marks 'the unravelling of Moore's Law'
https://www.pcgamer.com/microsofts-ligh … oores-law/
    Presenting its findings as "Unlocking the future of computing" Microsoft is edging ever closer to photon computing technology with the Analog Iterative Machine (AIM). Right now, the light-based machine is being licensed for use in financial institutions, to help navigate the endlessly complex data flowing through them.
    According to the Microsoft Research Blog, "Microsoft researchers have been developing a new kind of analog optical computer that uses photons and electrons to process continuous value data, unlike today's digital computers that use transistors to crunch through binary data" (via Hardware Info).
    In other words, AIM is not limited to the binary ones and zeros that your standard computer is relegated to. Instead it's been afforded the freedom of the entire light spectrum to work through continuous value data, and solve difficult optimization problems.


What Cyborg AI laser languages should be the Official Speak of Mars?

Last edited by Mars_B4_Moon (2023-07-02 04:50:14)

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#511 2023-07-03 02:29:25

kbd512
Administrator
Registered: 2015-01-02
Posts: 7,431

Re: Technology Updates

Mars_B4_Moon,

Star Trek hasn't been that far off the mark in most cases, has it?

We have our first actual warp bubble from EagleWorks, courtesy of Sonny White.

Heidi Fearn is working on an impulse drive.

Ryan Weed is working on matter / anti-matter reactors.

Microsoft's minions are working on Data's brain.

Tesla is working on general AI.

Boston Dynamics is working on various kinds of super robots.

We have also commercialized the transparent Aluminum.

We haven't started a war with the Romulans or Klingons yet, but give it some time.

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#512 2023-07-30 14:03:28

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,167

Re: Technology Updates

The article at the link below describes research on use of phase change to cool materials.

The method is still in the laboratory/research phase.  It appears to use electric current to drive phase change. This is NOT the well known Seebeck effect.

https://www.msn.com/en-us/news/technolo … ec4d&ei=10

Scientists Invented an Entirely New Process For Refrigerating Things
Story by David Nield • 15h ago

An open fridge
© Provided by ScienceAlert

Say hello to ionocaloric cooling. It's a new way to lower temperatures with the potential to replace existing methods of chilling things with a process that is safer and better for the planet.

Typical refrigeration systems transport heat away from a space via a gas that cools as it expands some distance away. As effective as this process is, some of the choice gases we use are particularly unfriendly to the environment.

There is, however, more than one way a substance can be forced to absorb and shed heat energy.

A method developed by researchers from the Lawrence Berkeley National Laboratory and the University of California, Berkeley, in the US takes advantage of the way that energy is stored or released when a material changes phase, as when solid ice turns to liquid water, for example.

Raise the temperature on a block of ice, it'll melt. What we might not see so easily is that melting absorbs heat from its surroundings, effectively cooling it.

One way to force ice to melt without needing to turn up the heat is to add a few charged particles, or ions. Putting salt on roads to prevent ice from forming is a common example of this in action. The ionocaloric cycle also uses salt to change a fluid's phase and cool its surroundings.

"The landscape of refrigerants is an unsolved problem," said mechanical engineer Drew Lilley from the Lawrence Berkeley National Laboratory in California in January 2023 statement. "No one has successfully developed an alternative solution that makes stuff cold, works efficiently, is safe, and doesn't hurt the environment."

"We think the ionocaloric cycle has the potential to meet all those goals if realized appropriately."

The researchers modeled the theory of the ionocaloric cycle to show how it could potentially compete with, or even improve upon, the efficiency of refrigerants in use today. A current running through the system would move the ions in it, shifting the material's melting point to change temperature.

The ionocaloric cycle in action. (Jenny Nuss/Berkeley Lab)
© Provided by ScienceAlert

The team also ran experiments using a salt made with iodine and sodium to melt ethylene carbonate. This common organic solvent is also used in lithium-ion batteries and is produced using carbon dioxide as an input. That could make the system not just GWP [global warming potential] zero but GWP negative.

A temperature shift of 25 degrees Celsius (45 degrees Fahrenheit) was measured through the application of less than a single volt of charge in the experiment, a result that exceeds what other caloric technologies have managed to achieve so far.

"There are three things we're trying to balance: the GWP of the refrigerant, energy efficiency, and the cost of the equipment itself," said mechanical engineer Ravi Prasher from the Lawrence Berkeley National Laboratory.

"From the first try, our data looks very promising on all three of these aspects."

The vapor compression systems currently used in refrigeration processes rely on gases that have high GWP, such as various hydrofluorocarbons (HFCs). Countries that signed up to the Kigali Amendment have committed to reducing the production and consumption of HFCs by at least 80 percent over the next 25 years – and ionocaloric cooling could play a major part in that.

Now, the researchers need to get the technology out of the lab and into practical systems that can be used commercially and that scale up without any issues. Eventually, these systems could be used for heating as well as cooling.

"We have this brand-new thermodynamic cycle and framework that brings together elements from different fields, and we've shown that it can work," said Prasher.

"Now, it's time for experimentation to test different combinations of materials and techniques to meet the engineering challenges."

The research was published in Science.

A version of this article was first published in January 2023.

(th)

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#513 2023-07-31 15:14:42

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,167

Re: Technology Updates

This news item would surely have tickled Louis, if he were still here:

https://www.msn.com/en-us/news/technolo … bf86&ei=19

New Scientist
Energy-storing concrete could form foundations for solar-powered homes
Story by Jeremy Hsu • 2h ago

By Jeremy Hsu

Cement composite material with small fractures overlaid with a depiction of electricity PNAS
© Provided by New Scientist
A mixture of cement and charcoal powder could enable houses to store a full day’s worth of energy in their concrete foundations. This new way of creating a supercapacitor – an alternative to batteries that can discharge energy much faster – could be incorporated into the foundations of both buildings and wind turbines. When paired with renewable energy sources, it could also someday let concrete road foundations wirelessly recharge electric vehicles as they drive along.

“The materials are available for everyone all over the place, all over the world," says Franz-Josef Ulm at the Massachusetts Institute of Technology (MIT). “Which means we don't have the same restriction as with batteries.”

Ulm and his colleagues showed how cement and carbon black – a very fine version of charcoal – can mix with water to create a hardened block containing many branching, wire-like structures filled with the carbon. When the concrete is soaked in a common electrolyte solution such as potassium chloride, the charged particles from the electrolyte settle on the carbon-wire structures to provide energy-storing potential.

They then turned two thin slabs of the material just 1 centimetre wide and 1 millimetre thick into a supercapacitor by separating them with a thin insulating layer such as paper. Connecting three of these supercapacitors produced the equivalent of a 3-volt battery capable of lighting up a small LED.

Continue reading

(th)

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#514 2023-08-03 06:54:25

Mars_B4_Moon
Member
Registered: 2006-03-23
Posts: 9,267

Re: Technology Updates

Scientists Create New Material Five Times Lighter and Four Times Stronger Than Steel

University of Connecticut and colleagues have created a highly durable, lightweight material by structuring DNA and then coating it in glass. The resulting product, characterized by its nanolattice structure, exhibits a unique combination of strength and low density, making it potentially useful in applications like vehicle manufacturing and body armor.
https://scitechdaily.com/scientists-cre … han-steel/

US Spy Community Wants to ID Threats Posed by Tech Behind ChatGPT, LLMs
https://sociable.co/government-and-poli … ge-models/

Wood wind turbines outperform their counterparts.
https://www.thecooldown.com/green-tech/ … ne-sweden/

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#515 2023-08-04 17:19:08

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,167

Re: Technology Updates

The announcement below is not as impressive as Mars_B4_Moon's #514 opening paragraph, but it ** appears ** to be a useful step in the long road to safe human travel in space.

https://www.yahoo.com/news/iss-experime … 01411.html

Space
New ISS experiment will help develop air conditioning for future space habitats

Andrew Jones

Fri, August 4, 2023 at 6:00 AM EDT

Scientists are seen in their clean room clothes with a giant metal cylinder representing the new experiment.

An experiment sent to the International Space Station on the final Antares rocket launch, which took place on Tuesday (Aug. 1), aims to help scientists develop air conditioning for a future in which astronauts can travel to remote places in the solar system.

Keeping humans alive, happy and healthy while away from the comfort of Earth — including on spacecraft or in planetary habitats — will require reliable air conditioning that can continue operating in wildly different temperatures and when exposed to various gravitational environments.

Heating, ventilation and air conditioning systems on Earth use evaporation and condensation to control indoor air temperatures and humidity. Thus, designing systems for possible deep space habitats will first require understanding how microgravity affects such evaporation and condensation processes.

"We have developed over a hundred years' worth of understanding of how heat and cooling systems work in Earth’s gravity, but we haven't known how they work in weightlessness," said Issam Mudawar, Purdue’s Betty Ruth and Milton B. Hollander Family Professor of Mechanical Engineering, said in a statement.

Related: Antares rocket makes final launch, sending cargo to the International Space Station

In a new step towards this goal, a Purdue University experiment launched on the 19th commercial resupply service mission from Northrop Grumman (NG-19) to the International Space Station (ISS). Hopefully, it'll collect data to help answer long-standing questions about how boiling and condensation work in low gravity.

This will add a second module to a facility called the Flow Boiling and Condensation Experiment (FBCE). The first module, aboard the ISS since Aug. 2021, has been collecting data on the effects of microgravity on boiling in particular. But the new components arriving at ISS will soon allow teams to also investigate how condensation works in microgravity by comparing data collected in orbit with data collected on the ground. Both modules will run through 2025.

RELATED STORIES:

— 3D-printed hearts on ISS could help astronauts travel to deep space

— What will astronauts on deep space missions eat? 'Neurogastronomy' may have the answer.

— China to launch moon astronauts' new spacecraft for 1st time in 2027 or 2028

Further, FBCE may also assist future refueling of spacecraft in orbit by developing our understanding of how reduced gravity affects the flow boiling behavior of cryogenic liquids used as propellants.

FBCE was developed over 11 years through collaboration between Mudawar's lab and NASA's Glenn Research Center in Cleveland, which engineered and built the flight hardware. It was funded by the agency’s Biological and Physical Sciences Division at NASA Headquarters.

The NG-19 Cygnus spacecraft is carrying over 8,200 pounds (3,700 kilograms) of cargo and is expected to dock at the ISS between 4:30-7:30 a.m. EDT on Aug. 4. A livestream of the docking is available via NASA Live.

(th)

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#516 2023-08-12 08:25:09

Mars_B4_Moon
Member
Registered: 2006-03-23
Posts: 9,267

Re: Technology Updates

From Nanotattoos to Curing Blindness and Decelerating Aging
https://rushingrobotics.com/p/weekly-piece-of-future-28

A.I. is on a collision course with white-collar, high-paid jobs — and with unknown impact
https://www.cnbc.com/2023/07/31/ai-coul … -jobs.html

Northampton: Warehouse uses robots to help staff shortage
https://www.bbc.com/news/uk-england-nor … e-65846611

Moon mining - Why major powers are eyeing a lunar gold rush?
https://www.reuters.com/technology/spac … 023-08-11/

Russia launched its first moon-landing spacecraft in 47 years on Friday amid a race by major powers including the United States, China and India to discover more about the elements held on the earth's only natural satellite.

Russia said that it would launch further lunar missions and then explore the possibility of a joint Russian-China crewed mission and even a lunar base. NASA has spoken about a "lunar gold rush" and explored the potential of moon mining.

Why are major powers so interested in what is up there?

THE MOON

The moon, which is 384,400 km (238,855 miles) from our planet, moderates the earth's wobble on its axis which ensures a more stable climate. It also causes tides in the world's oceans.

Current thinking is that it was formed when a massive thing collided with earth about 4.5 billion years ago. The debris from the collision came together to form the moon.

Temperatures vary: in full Sun, they rise to 127 degrees Celsius while in darkness they plummet to about minus 173 degrees Celsius. The moon's exosphere does not give protection against radiation from the Sun.

WATER

The first definitive discovery of water on the moon was made in 2008 by the Indian mission Chandrayaan-1, which detected hydroxyl molecules spread across the lunar surface and concentrated at the poles, according to NASA.

Water is crucial for human life and also can be a source of hydrogen and oxygen - and these can be used for rocket fuel.

HELIUM-3

Helium-3 is an isotope of helium that is rare on earth, but NASA says there are estimates of a million tonnes of it on the moon.

This isotope could provide nuclear energy in a fusion reactor but since it is not radioactive it would not produce dangerous waste, according to the European Space Agency.

RARE EARTH METALS

Rare earth metals - used in smartphones, computers and advanced technologies - are present on the moon, including scandium, yttrium and the 15 lanthanides, according to research by Boeing.

HOW WOULD MOON MINING WORK?

It is not entirely clear.

Some sort of infrastructure would have to be established on the moon. The conditions of the moon mean robots would have to do most of the hard work, though water on the moon would allow for long-term human presence.

WHAT IS THE LAW?

The law is unclear and full of gaps.

The United Nations 1966 Outer Space Treaty says that no nation can claim sovereignty over the moon - or other celestial bodies - and that the exploration of space should be carried out for the benefit of all countries.

But lawyers say it is unclear whether or not a private entity could claim sovereignty over a part of the moon.

"Space mining is subject to relatively little existing policy or governance, despite these potentially high stakes," The RAND Corporation said in a blog last year.

The 1979 The Moon Agreement states that no part of the moon "shall become property of any State, international intergovernmental or non-governmental organization, national organization or non-governmental entity or of any natural person."

It has not been ratified by any major space power.

The United States in 2020 announced the Artemis Accords, named after NASA’s Artemis moon program, to seek to build on existing international space law by establishing “safety zones" on the moon. Russia and China have not joined the accords.

"DeepMind training bipedal robots to play soccer using deep reinforcement learning"
https://twitter.com/MachinePix/status/1 … 7963167747

Evidence for Modified Gravity Found in the Motions of Binary Stars
https://www.universetoday.com/162749/ev … ary-stars/

'Scientists May Have Discovered a Fifth Force of Nature'
https://greekreporter.com/2023/08/12/fi … of-nature/

Muon g-2 experiment moves step closer in search of new physics
https://news.liverpool.ac.uk/2023/08/10 … w-physics/

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#517 2023-09-08 19:38:25

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,167

Re: Technology Updates

Mars_B4_Moon may have already reported this ...

https://www.yahoo.com/news/engineers-ut … 00642.html

The article at the link above is about a "super capacitor" made with concrete and carbon black ...

In short, some other key parts needed for the charge/discharge cycle are added, creating an environment that allows the supercapacitor to work. A big improvement is the use of readily  available materials like cement instead of lithium, which is rare and often takes invasive mining to gather.

The payoff is realized in the power storage. MIT researchers said that a nearly 59-cubic-yard piece of their cement, complete with nanosized carbon black, could store enough energy to power a house for a day.

“Since the concrete would retain its strength, a house with a foundation made of this material could store a day’s worth of energy produced by solar panels or windmills and allow it to be used whenever it’s needed. And, supercapacitors can be charged and discharged much more rapidly than batteries,” according to the research report.

The article goes on to discuss tradeoffs ...

(th)

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#518 2023-09-09 12:00:58

Void
Member
Registered: 2011-12-29
Posts: 7,105

Re: Technology Updates

For what is may be worth, zinc battery: https://www.msn.com/en-us/news/technolo … b1cb&ei=23

Quote:

Scientists just made a massive breakthrough on an alternative to lithium-ion batteries: ‘These batteries are essential’
Story by Laurelle Stelle •
6h

So, like Sodium batteries, and Iron/Air batteries we shall see if this is as good as is said.

Done.

Last edited by Void (2023-09-09 12:02:32)


Done.

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#519 2023-09-25 09:53:32

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,167

Re: Technology Updates

This is a report on research into energy capture by molecules that yields photosynthesis.

https://www.msn.com/en-us/news/technolo … 49358&ei=6

Popular Mechanics
Popular Mechanics
This Molecule Violates Chemistry. And It's Going to Help Us Harness Limitless Energy.
Story by Darren Orf •
45m

A new study has explored the strange properties of azulene, a blue light-emitting molecule that flouts one of the fundamental rules of photochemistry.
A new study has explored the strange properties of azulene, a blue light-emitting molecule that flouts one of the fundamental rules of photochemistry.
© Alvin Huang - Getty Images
One of the major engineering challenges of the climate change era is finding ways to make solar panels ever more efficient.
A new study from the Institute of Organic Chemistry and Biochemistry (IOCB) Prague has explored the strange properties of azulene, a blue light-emitting molecule that flouts one of the fundamental rules of photochemistry.
Receive a Quote - New and Used Zero Turns


Understanding how molecules like azulene convert energy through fluoresence could help build molecules that are more efficient at converting the Sun’s photons into usable electricity.

When Charles Fritts built the first solar cell in 1883 by coating the mineral selenium with gold, it achieved less than one percent efficiency. That means that out of all of the photons hitting Fritts’ world-changing invention, only a tiny fraction were actually being converted into electricity. Thankfully, times have changed in the past 140 years, and the world’s current most efficient solar cell—constructed by the U.S. National Renewable Energy Laboratory in 2020—converts a stellar 47.1 percent of the Sun’s energy.

But those huge efficiency gains just don’t just magically happen. They require years of intense engineering and leveraging the very latest understanding of photochemistry—the branch of science concerned with the chemical effects of light. The more we understand light and its various excited states, the more scientists and engineers can tick that efficiency percentage higher and higher. And that means solving some of photochemistry’s most persistent mysteries.

One of those mysteries is a fundamental aromatic molecule known as azulene. This molecule was a mystery for decades because scientists couldn’t even figure out why it was blue (hence azul). Thankfully, that puzzle was solved in the 1970s, but that wasn’t the end of the molecule’s mysterious story.

That’s because azulene also runs counter to the photochemical idea known as Kasha’s rule, named after American molecular spectroscopist Michael Kasha. Kasha’s rule explains how molecules emit light in various excited states.

Now, scientists from the Institute of Organic Chemistry and Biochemistry (IOCB) Prague have finally figured out why this azulene violates this well-established law of chemistry. The results were published in the journal American Chemical Society.

“It’s based on the aromaticity and the antiaromaticity of that molecule in different excited states,” lead author Tomáš Slanina said in a press statement. “We can think of aromaticity as a kind of internal stabilization of that molecule. When that molecule is aromatic, it’s happy, it’s stable. When it’s antiaromatic, it’s trying its best to escape that state somehow.”

In the case of azulene, the molecule is aromatic—or stable—in its ground state, but is antiaromatic in its first excited state. Because azulene will do anything it can to escape this “unhappy” state, it drops down to a second level excited state within a few picoseconds (a picosecond is 0.000000000001 seconds). This is so fast that the molecule doesn’t even have time to emit light.

However, azulene is aromatic in this second level excited state for a full nanosecond—which, by our measure, is still an incredibly short amount of time. But it’s more than enough time for the molecule to emit the energy of this excited state as a high-energy photon. In other words, it emits light.

“We’re looking at molecules that can absorb and store light energy and they don’t waste that energy, they can manage it well,” Slanina says in a press statement. “So they can pass it on as photons of fluorescence or … transfer the energy to another molecule.”

A neat trick—and one that’ll come in handy as we can continue to devise ways to harness all of the Sun’s free and practically limitless energy.

2023 Popular Mechanics

(th)

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#520 2023-09-30 13:29:58

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,167

Re: Technology Updates

This is a set of snippets about laboratory centrifuge technology...

The lead off item is an ultracentrifuge capable of 150,000 RPM.  I'll be looking for technical specifications for this equipment.

Ultracentrifuge - Wikipedia
An ultracentrifuge is a centrifuge optimized for spinning a rotor at very high speeds, capable of generating acceleration as high as 1 000 000 g (approx. 9 800 km/s²). There are two kinds of ultracentrifuges, the preparative and the analytical ultracentrifuge.

Ultracentrifuge - Wikipedia

wikipedia.org
https://en.wikipedia.org › wiki › Ultracentrifuge
Search for: What are the two types of ultracentrifuge?
What are the alternatives to ultracentrifuge?
What is the range of rpm for ultracentrifuge?
Ultracentrifuges | Biocompare
to 150,000 RPM
Ultracentrifuges are laboratory centrifuges with rotors that spin at very high speeds, usually ranging from 60,000 RPM and 200,000 x g to 150,000 RPM and 1,000,000 x g.

Ultracentrifuges - Biocompare

Update at 15:53 local time...

I just sent an inquiry to a German manufacturer of ultracentrifuge equipment for the medical field. To adapt the equipment for space propulsion would be a stretch but I'm confident that if it can be done, this company could do it.

(th)

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#521 2023-10-12 06:36:37

tahanson43206
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Registered: 2018-04-27
Posts: 17,167

Re: Technology Updates

DropBox started out as a pedestrian but very useful cloud storage service.  The company appears to be transforming itself into an online work environment amplified by artificial intelligence.  For the Large and increasing number of folks who work from home, or with the Internet from offices, this offering may be of interest:

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Just launched! Professional plans and AI features
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Oct 11, 2023, 11:04AM (21 hours ago)
to me


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#522 2023-10-18 09:55:20

Steve Stewart
Member
From: Kansas (USA)
Registered: 2019-09-21
Posts: 161
Website

Re: Technology Updates

News about a recent "monster marsquake"

SCIENTISTS PUZZLED BY SUDDEN, SUPER-LOUD RUMBLE INSIDE MARS
A SO-CALLED DEAD WORLD

Most of the data gathered about Mars' seismic activity so far indicates that it's originating from a huge pair of trenches known as the Cerberus Fossae, which are believed to be the open wounds of an underlying fault where magma interactions could still persist.

Insight's data on the monster marsquake, however, pinpoints the source of its reverberations as far beyond the faults, to the planet's southeast. It appears that some other mysterious phenomenon is behind the almighty tremor, and for now, scientists will have to see what shakes out.

"Clearly there's a massive piece of the tectonic and seismic puzzle that we haven't yet unraveled," Fernando told SA.

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#523 2023-10-23 09:29:40

Void
Member
Registered: 2011-12-29
Posts: 7,105

Re: Technology Updates

This is of interest: https://www.msn.com/en-us/lifestyle/lif … 3c95&ei=44
Quote:

Researchers discover unexpected material can boost solar panel efficiency: ‘Effectively absorbs ultraviolet … and near-infrared wavelengths’
Story by Jane Donohue  •
3d

This is an example of cross-pollination, and potentially an accumulation.  It is very good that not all innovation is too strongly embedded in one central cultural power group, or these innovations might not show up.

This process may do very well in space, as first heat is extracted from wavelengths not suitable for solar panels, and then the solar panels get a spectrum which is closer to ideal for them.

I will make note that a heat pump system may work very well with this as the electricity will be present at the same Time as the heat is present.

Done.

Last edited by Void (2023-10-23 09:36:15)


Done.

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#524 2023-10-23 09:42:16

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,167

Re: Technology Updates

For Void re #523

Thank you for finding and posting this report on use of fish oil to improve solar panel performance!

I'd like call attention to this snippet:

As demand for renewable energy increases, researchers have been working tirelessly to increase the affordability, sustainability, and efficiency of solar energy. Durable perovskite solar cells are high-performing without breaking the bank, while silicon nanoparticles could convert low-energy light into high-energy. The KMOU team’s discovery represents another step forward for the efficiency of more affordable energy.

If anyone in the membership spots more detail about the use of nanoparticles to convert low-frequency photons to higher frequency ones, please post it here and also in the topic Photon Upconversion.

http://newmars.com/forums/viewtopic.php?id=8916

Photon Upconversion is another of Void's forward looking topics.

The upconversion that is of particular interest to me is the conversion from low grade thermal energy to high energy photons for solar cells.

The application of immediate value on Earth is harvesting low grade thermal energy from the core of the Earth, via wells sunk to heated layers of the crust.

(th)

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#525 2023-10-23 11:47:19

Void
Member
Registered: 2011-12-29
Posts: 7,105

Re: Technology Updates

But don't miss the likelihood that when peak electric output exists, also would exist heat input to a heat pump system, and heat pumps are getting higher and higher temperature.  Thermal batteries may be of some use.

done


Done.

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