The shapes seen both in the models and in reality are similar to other funnel - shaped impact craters, such as those seen on NASA's Stardust spacecraft, which collected space dust particles
in aerogel.
The dust particles crashing into the collector would embed
themselves in the aerogel and remain there until Stardust returns home.
Citizen scientists identified most of the 71 tracks where particles were caught
in the aerogel, and scanning electron microscopy revealed 25 craterlike features where particles punched through the foil.
The precious payload — comet flecks embedded
in aerogel and protected by a heat - resistant casing — will parachute to the desert floor in Utah.
Not exact matches
«We think comets are made of interstellar grains, perhaps formed around millions of stars
in the Milky Way,» Brownlee says as he handles a piece of
aerogel.
Aerogel was first created by chemist Samuel Kistler
in the 1930s and offered by the Monsanto Company for paints, cosmetics, and toothpaste.
Tsou worked with scientists at Lawrence Livermore National Laboratory
in California to make the
aerogel even lighter to improve its particle - catching ability.
Earlier,
in 2000 and 2002, the craft positioned
aerogel collectors on the opposite side of the arm to snare particles of interstellar dust, suspected to be as small as one - tenth the size of comet grains.
When Stardust approaches Wild 2
in a few months, the spacecraft will raise a tray of ice - cube - size chunks of
aerogel on an arm shaped like a tennis racket.
After years of testing —
aerogel flew to the space station Mir and
in the open cargo bay of the space shuttle — Tsou was ready to propose the Stardust mission.
While
aerogels were first created
in the 1930s, this advanced material has not been widely adopted by industries due to its high production cost.
«Each cotton
aerogel pellet can expand to 16 times its size
in 4.5 seconds — larger and more than three times faster than existing cellulose - based sponges — while retaining their structural integrity.
The samples
in Elsila's study came from four squares of aluminium foil, each about 1 centimetre across, that sat next to a lightweight sponge - like «
aerogel» that was designed to capture dust from the comet's atmosphere, or coma.
Led by Associate Professor Hai Minh Duong and Professor Nhan Phan - Thien from the Department of Mechanical Engineering at NUS Faculty of Engineering, the research team discovered that the novel cotton
aerogels can be easily compressed, and they can also very quickly recover up to 97 per cent of their original size when placed
in water.
Dunlop and Head, two major racket manufacturers, are also touting the use of
aerogel — the incredibly low - density solid that NASA used to collect comet particles as part of its Stardust mission —
in their latest models.
Bronxculture intends to manufacture the cellulose
aerogels and further expand its applications
in three areas, namely, insulating materials for packaging boxes, insulating layer for winter garment and oil absorption materials.
In addition, compressed cellulose
aerogels can be used to plug life - threatening wounds such as a gunshot or stabbing lesion by injecting them into the wound cavity.
In addition to low thermal conductivity, these novel aerogels have several unique features, one of which is super high oil absorption capacity — it is up to four times higher than commercial sorbents available in the marke
In addition to low thermal conductivity, these novel
aerogels have several unique features, one of which is super high oil absorption capacity — it is up to four times higher than commercial sorbents available
in the marke
in the market.
The novel cellulose
aerogels developed by the NUS team could also signal a change
in the packing industry.
With high surface area and high porosity, the biodegradable
aerogels could also be used as coating materials
in drug delivery or as smart materials.
Stardust's cache was sanitized by intense heat as comet particles collided at 14,000 miles per hour with foamy
aerogel in the probe's dust collector.
A plant stem inspired researchers to develop a new, versatile
aerogel for possible use
in bendable devices.
Aerogels are light, porous materials that are already used
in many applications, such as pollution control and insulation.
Scientists estimate that Stardust collected 45 of these micron - sized interstellar dust particles using an
aerogel collector 1,000 square centimeters
in size.
They also put the
aerogel in a circuit with an LED and found it could potentially work as a component of a flexible device.
Now, researchers report
in ACS Nano that mimicking the structure of the «powdery alligator - flag» plant has enabled them to make a graphene - based
aerogel that meets these needs.
In November researchers showed off the lightest material ever created: a strong metal mesh about 25 percent less dense than the wispiest
aerogel, a foamlike material that was the old record holder.
Mission planners knew the dust would smash into the collector at about 26 kilometers per second, so they coated a tennis - racket - shaped arm with
aerogel, a porous solid that resembles frozen smoke
in an ice - cube tray.
Aerogels are a relatively new development as insulating materials
in the building sector.
It also harvested tiny bits of the comet itself
in a tennis racket - shaped collector carrying an ice cube tray - like device filled with the lightest - weight, lowest - mass solid known:
aerogel.
Empa researchers have now replaced Perlite
in insulating bricks with
Aerogel: a highly porous solid with very high thermal insulation properties that can withstand temperatures of up to 300 °C (see box).
In addition to its thermal properties,
aerogels are vapour permeable, absorb almost no moisture, recyclable, non-toxic and non-combustible.
«The
aerogel stays
in the bricks — you can work with them as usual.»
The
aerogel collector also gathered microscopic interstellar dust that may have traveled from other galaxies, which could offer researchers a glimpse of the nuclear reactions
in distant stars.
The researchers made an
aerogel (a low - density solid) out of nanotubes, and found that
in was as strong as steel.
The slurry can also be used directly to 3D - print conductive graphene
aerogels, an ultra-lightweight sponge - like material that can be used to remove oil spill
in the sea.
«Because
aerogels have very high surface areas and good thermal properties, we think they could replace precious metals, like platinum, used
in current catalytic converters.»
A time and money - saver, it could appeal to industries already using
aerogel made
in other ways.
The spacecraft will fly into the comet's tail and catch particles
in a gel called
aerogel, which is mounted on the panels of the spacecraft.
Led by Yuehe Lin, professor
in the School of Mechanical and Materials Engineering, the researchers used inexpensive metal to make a super low density material, called an
aerogel, to reduce the amount of precious metals required for fuel cell reactions.
Because metal - based
aerogels have large surface areas and are highly porous, they work well for catalyzing
in fuel cells.
Liliane Lijn, Heavenly Fragments,
Aerogel fragments of a cone and disk on grey mirror
in Perspex case, perlescent metallic coated square column housing DVD player and projector.
He has also worked with a new material called
Aerogel, a sponge - like insulating substance developed for use
in the aerospace industry.
From batteries to desalination, a new carbon
aerogel derived from graphene, could have a big role to play
in improving a number of existing low carbon [continue reading...]
Still,
in the past decade, cleantech companies such as SunPower, First Solar, EnerNOC and Comverge, and more recently, Tesla, SolarCity, Silver Spring Networks, Enphase, Aspen
Aerogels, and Control4 have made it onto public exchanges.
It's full of
aerogel, one of the best insulators
in the world.
«What the
Aerogel particles do,» says Greg Pope, owner and president of the Righter Group
in Wilmington, Mass., «is alter the surface temperature and slow heat transfer more efficiently than conventional foam and other insulation do, thereby helping the home retain energy.»