Can a new type of transparent gel, made from readily-available beer waste, help engineers build greenhouses on Mars?
CU Boulder physicists have developed an insulating gel that they say could coat the windows of habitats in space, allowing the settlers inside to trap and store energy from the sun—much like a greenhouse stays warm during the winter. And unlike similar products on the market, the material is mostly see-through.
“Transparency is an enabling feature because you can use this gel in windows, and you could use it in extraterrestrial habitats,” said Ivan Smalyukh, a professor in the Department of Physics. “You could harvest sunlight through that thermally insulating material and store the energy inside, protecting yourself from those big oscillations in temperature that you have on Mars or on the moon.”
The defining feature of aerogels, as their name suggests, is air, Smalyukh explained. By weight, these thin films are 90 percent gas. Engineers achieve this feather weight by generating crisscrossing patterns of solid material that trap air inside billions of tiny pores, similar to the bubbles in bubble wrap. It’s that trapping capacity that makes them such good insulators.
“You create a very tortuous network of these nanoparticles that link together in the aerogel, preventing the heat from going through,” Smalyukh said.
Beer to windows
That same network, however, tends to scatter light, making aerogels look cloudy and explaining why some engineers call them “frozen smoke.”
To make a more translucent gel, Smalyukh and his colleagues begin with the common plant sugar cellulose. By carefully controlling how cellulose molecules link up, the team is able to orient them into a lattice-like pattern.
That pattern is so uniform, he said, that it allows light to pass through unbothered, giving the gel its transparent appearance.
Problem solved. In order to find a ready supply of cellulose for their space-age material, the researchers turned to a substance with humble beginnings: a refreshing IPA.
Unused beer wort, or waste liquid produced during the brewing process, can make cellulose when scientists add in specialized bacteria. The researchers began driving to breweries across the Boulder area to collect tubs of unwanted liquid from beer-makers.
“So not only are we recycling and saving this valuable material from entering the landfill, but we’re also producing this raw material cheaply,” said Andrew Hess, a Ph.D. student in physics at CU Boulder.
Currently, it takes the team about two weeks to culture the cellulose, but the rest of the process of making the aerogel moves quickly. The final product of the team’s efforts is a thin, flexible film that is roughly 100 times lighter than glass. This gel is so resistant to heat that you could put a strip of it on your hand and light a fire on top—without feeling a thing.
Mars to Antarctica
The Latest on: Aerogel
via Google News
The Latest on: Aerogel
- Aspen Aerogels (NYSE:ASPN) Upgraded to “Hold” by Zacks Investment Researchon October 6, 2020 at 12:54 am
Zacks Investment Research upgraded shares of Aspen Aerogels (NYSE:ASPN) from a sell rating to a hold rating in a research report sent to investors on Monday morning, Zacks.com reports. According to ...
- Making Aerogel, It’s Not For The Faint-Heartedon October 5, 2020 at 5:00 pm
Aerogel — that mixture of air and silica — is one of those materials that seems like a miracle. It is almost not there since the material is 99% air. [NileRed] wanted to make his own and he ...
- Make Your Own Aerogelon October 4, 2020 at 5:00 pm
Our own [Eliot] dug this one up from the grave. While the recipe has been online for a while, do you know many 10 year olds who made their own Aerogel, that wonderful insulator that’s ...
- Watch this aerogel insulated jacket withstand liquid nitrogenon October 1, 2020 at 5:00 pm
is a global, multi-platform media and entertainment company. Powered by its own proprietary technology, Mashable is the go-to source for tech, digital culture and entertainment content for its ...
- Record holder: GUINNESS WORLD RECORDS ™ names engineers’ graphene aerogel as world's least dense 3-D printed structureon October 1, 2020 at 5:00 pm
The record-breaking material is 3-D printed graphene aerogel and it was developed by Chi Zhou, assistant professor of industrial and systems engineering at University at Buffalo; Dong Lin, Kansas ...
- OROS x NASA 39A flight jacket (aerogel)on October 1, 2020 at 7:07 am
By the time you read this, the NASA 39A flight jacket may have already blasted off. The first NASA-branded product from OROS, an outerwear company that was built around a space-age insulator, the 39A ...
- Aerogel Market Insights, Potential Business Strategies, Mergers and Acquisitions, Revenue Analysis – 2020- 2028on September 30, 2020 at 1:29 am
Future Market Insights (FMI), in an upcoming market research study, brings to fore both macro- and microeconomic factors that will shape the growth curve of the Global Aerogel Market. The report ...
- Global Silica Aerogel Blanket Market 2020 Industry Analysis by Key Players, Product Type, Application, Regions and Forecast to 2025on September 28, 2020 at 9:12 pm
Sep 28, 2020 (CDN Newswire via Comtex) -- Global Silica Aerogel Blanket Market 2020 by Manufacturers, Regions, Type and Application, Forecast to 2025 now available at MarketQuest.biz provides ...
- Flexible Ceramic Aerogel Eyed for High-Temperature Applicationson September 28, 2020 at 5:00 pm
Now a research team led by engineers at UCLA has come up with a new solution for this task in an extremely light, very durable ceramic aerogel that can withstand even extreme temperature spikes.
via Bing News