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10 Futuristic materials to wonder about

10 Futuristic materials to wonder about

This week, we came across an intriguing article on ’10 Futuristic Materials’ written by Lifeboat Foundation Scientific Advisory Board member, Michael Anissimov.

Here’s what Anissimov got to say about the list of fabulous futuristic materials:

1.  Aerogel

1aerogel-crayons

Aerogel protecting crayons from a blowtorch.

Aerogel holds 15 entries in the Guinness Book of Records, more than any other material. Sometimes called “frozen smoke”, aerogel is made by the supercritical drying of liquid gels of alumina, chromia, tin oxide, or carbon. It’s 99.8% empty space, which makes it look semi-transparent. Aerogel is a fantastic insulator — if you had a shield of aerogel, you could easily defend yourself from a flamethrower. It stops cold, it stops heat. You could build a warm dome on the Moon. Aerogels have unbelievable surface area in their internal fractal structures — cubes of aerogel just an inch on a side may have an internal surface area equivalent to a football field. Despite its low density, aerogel has been looked into as a component of military armor because of its insulating properties.

2. Carbon nanotubes

2carbon-nanotubes

Carbon nanotubes are long chains of carbon held together by the strongest bond in all chemistry, the sacred sp2 bond, even stronger than the sp3 bonds that hold together diamond. Carbon nanotubes have numerous remarkable physical properties, including ballistic electron transport (making them ideal for electronics) and so much tensile strength that they are the only substance that could be used to build a space elevator. The specific strength of carbon nanotubes is 48,000 kN·m/kg, the best of known materials, compared to high-carbon steel’s 154 kN·/kg. That’s 300 times stronger than steel. You could build towers hundreds of kilometers high with it.

3. Metamaterials

3invisibility-cloak

“Metamaterial” refers to any material that gains its properties from structure rather than composition. Metamaterials have been used to create microwave invisibility cloaks, 2D invisibility cloaks, and materials with other unusual optical properties. Mother-of-pearl gets its rainbow color from metamaterials of biological origin. Some metamaterials have a negative refractive index, an optical property that may be used to create “Superlenses” which resolve features smaller than the wavelength of light used to image them! This technology is called subwavelength imaging. Metamaterials would be used in phased array optics, a technology that could render perfect holograms on a 2D display. These holograms would be so perfect that you could be standing 6 inches from the screen, looking into the “distance” with binoculars, and not even notice it’s a hologram.

4. Bulk diamond

4diamonds

We’re starting to lay down thick layers of diamond in CVD machines, hinting towards a future of bulk diamond machinery. Diamond is an ideal construction material — it’s immensely strong, light, made out of the widely available element carbon, nearly complete thermal conductivity, and has among the highest melting and boiling points of all materials. By introducing trace impurities, you can make a diamond practically any colour you want. Imagine a jet, with hundreds of thousands of moving parts made of fine-tuned diamond machinery. Such a craft would be more powerful than today’s best fighter planes in the way an F-22 is better than the Red Baron’s Fokker Dr.1.

5. Bulk fullerenes

5fullerenes

Diamonds may be strong, but aggregated diamond nanorods (what I call amorphous fullerene) are stronger. Amorphous fullerene has a isothermal bulk modulus of 491 gigapascals (GPa), compared to diamond’s 442 GPa. As we see in the image, the nanoscale structure of the fullerene gives it a beautiful iridescent appearance. Fullerenes can be made substantially stronger than diamond, but for greater energy cost. After a “Diamond Age” we may eventually transition to a “Fullerene Age” as our technology gets even more sophisticated.

6. Amorphous metal

6amorphous-metal

Amorphous metals, also called metallic glasses, consist of metal with a disordered atomic structure. They can be twice as strong as steel. Because of their disordered structure, they can disperse impact energy more effectively than a metal crystal, which has points of weakness. Amorphous metals are made by quickly cooling molten metal before it has a chance to align itself in a crystal pattern. Amorphous metals may be the military’s next generation of armor, before they adopt diamondoid armor in mid-century. On the green side of things, amorphous metals have electronic properties that improve the efficiency of power grids by as much as 40%, saving us thousands of tons of fossil fuel emissions.

7. Superalloys

7superalloys

A superalloy is a generic term for a metal that can operate at very high temperatures, up to about 2000 °F (1100 °C). They are popular for use in the superhot turbine areas of jet engines. They are used for more advanced oxygen-breathing designs, such as the ramjet and scramjet. When we’re flying through the sky in hypersonic craft, we’ll have superalloys to thank for it.

8. Metal foam

8metal-foam

Metal foam is what you get when you add a foaming agent, powdered titanium hydride, to molten aluminum, then let it cool. The result is a very strong substance that is relatively light, with 75–95% empty space. Because of its favorable strength-to-weight ratio, metal foams have been proposed as a construction material for space colonies. Some metal forms are so light that they float on water, which would make them excellent for building floating cities, like those analyzed by Marshall T. Savage in one of my favorite books, The Millennial Project.

9. Transparent alumina

Im Dresdner Fraunhofer-Institut für Keramische Technologien und Sinterwerkstoffe entzündet am Freitag (01.02.2002) ein Mitarbeiter eine Kerze hinter einer lichtdurchlässigen Keramikscheibe; links eine Platte der neu entwickelten Panzer-Keramik. Mit der Panzer-Keramik wollen die Dresdner Forscher in Zukunft Soldaten in Krisengebieten vor tödlichen Projektilen von Heckenschützen bewahren, während sich die lichtdurchlässige Keramik unter Umständen zu einer schusssicheren Scheibe weiterentwickeln lässt. Das Geheimnis der neuen Panzerplatten liegt in ihrem bislang unerreicht einheitlichen Mikro-Aufbau. dpa/lsn (zu Korr-Bericht lsn 015 vom 04.02.2002)

Transparent alumina is three times stronger than steel and transparent. The number of applications for this are huge. Imagine an entire skyscraper or arcology made largely of transparent steel. The skylines of the future could look more like a series of floating black dots (opaque private rooms) rather than the monoliths of today. A huge space station made of transparent alumina could cruise in low Earth orbit without being a creepy black dot when it passes overhead. And hey… transparent swords!

 

10. E-textiles

10optics-clothing

If you meet up and talk to me in 2020, I’ll likely be covered in electronic textiles. Why carry some electronic gadget you can easily lose when we can just wear our computers? We’ll develop clothing that can constantly project the video of our choosing (unless it turns out being so annoying that we ban it). Imagine wearing a robe covered in a display that actually projects the night sky in real time. Imagine talking to people over the “phone” just by making a hand gesture and activating electronics in your lapel, then merely thinking about what you want to say (thought-to-speech interfaces). The possibilities of e-textiles are limitless.

 

To read the source article, click here.

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