It’s called “buckypaper” and looks a lot like ordinary carbon paper, but don’t be fooled by the cute name or flimsy appearance. It could revolutionize the way everything from airplanes to TVs are made.
Buckypaper is 10 times lighter but potentially 500 times stronger than steel when sheets of it are stacked and pressed together to form a composite. Unlike conventional composite materials, though, it conducts electricity like copper or silicon and disperses heat like steel or brass.
“All those things are what a lot of people in nanotechnology have been working toward as sort of Holy Grails,” said Wade Adams, a scientist at Rice University.
That idea — that there is great future promise for buckypaper and other derivatives of the ultra-tiny cylinders known as carbon nanotubes — has been floated for years now. However, researchers at Florida State University say they have made important progress that may soon turn hype into reality.
Buckypaper is made from tube-shaped carbon molecules 50,000 times thinner than a human hair. Because of its unique properties, it is envisioned as a wondrous new material for light, energy-efficient aircraft and automobiles, more powerful computers, improved TV screens and many other products.
So far, buckypaper can be made at only a fraction of its potential strength, in small quantities and at a high price. The Florida State researchers are developing manufacturing techniques that soon may make it competitive with the best composite materials now available.
“If this thing goes into production, this very well could be a very, very game-changing or revolutionary technology to the aerospace business,” said Les Kramer, chief technologist for Lockheed Martin Missiles and Fire Control, which is helping fund the Florida State research.
The scientific discovery that led to buckypaper virtually came from outer space.
In 1985, British scientist Harry Kroto joined researchers at Rice University for an experiment to create the same conditions that exist in a star. They wanted to find out how stars, the source of all carbon in the universe, make the element that is a main building block of life.
Everything went as planned with one exception.
“There was an extra character that turned up totally unexpected,” recalled Kroto, now at Florida State heading a program that encourages the study of math, science and technology in public schools. “It was a discovery out of left field.”
The surprise guest was a molecule with 60 carbon atoms shaped like a soccer ball. To Kroto, it also looked like the geodesic domes promoted by Buckminster Fuller, an architect, inventor and futurist.
That inspired Kroto to name the new molecule buckminsterfullerene, or “buckyballs” for short.
For their discovery of the buckyball — the third form of pure carbon to be discovered after graphite and diamonds — Kroto and his Rice colleagues, Robert Curl Jr and Richard Smalley, were awarded the Nobel Prize for chemistry in 1996.
Separately, Japanese physicist Sumio Iijima developed a tube-shaped variation while doing research at Arizona State University.
Researchers at Smalley’s laboratory then inadvertently found that the tubes would stick together when disbursed in a liquid suspension and filtered through a fine mesh, producing a thin film — buckypaper.
The secret of its strength is the huge surface area of each nanotube, said Ben Wang, director of Florida State’s High-Performance Materials Institute.
“If you take a gram of nanotubes, just one gram, and if you unfold every tube into a graphite sheet, you can cover about two-thirds of a football field,” Wang said.
Carbon nanotubes are already beginning to be used to strengthen tennis rackets and bicycles, but in small amounts. The epoxy resins used in those applications are 1 percent to 5 percent carbon nanotubes, which are added in the form of a fine powder. Buckypaper, which is a thin film rather than a powder, has a much higher nanotube content — about 50 percent.
One challenge is that the tubes clump together at odd angles, limiting their strength in buckypaper. Wang and his fellow researchers found a solution: Exposing the tubes to high magnetism causes most of them to line up in the same direction, increasing their collective strength.
Another problem is the tubes are so perfectly smooth it’s hard to hold them together with epoxy. Researchers are looking for ways to create some surface defects — but not too many — to improve bonding.
So far, the Florida State institute has been able to produce buckypaper with half the strength of the best existing composite material, known as IM7. Wang expects to close the gap quickly.
“By the end of next year we should have a buckypaper composite as strong as IM7, and it’s 35 percent lighter,” Wang said.
NO HUMAN ERROR: After the incident, the Coast Guard Administration said it would obtain uncrewed aerial vehicles and vessels to boost its detection capacity Authorities would improve border control to prevent unlawful entry into Taiwan’s waters and safeguard national security, the Mainland Affairs Council (MAC) said yesterday after a Chinese man reached the nation’s coast on an inflatable boat, saying he “defected to freedom.” The man was found on a rubber boat when he was about to set foot on Taiwan at the estuary of Houkeng River (後坑溪) near Taiping Borough (太平) in New Taipei City’s Linkou District (林口), authorities said. The Coast Guard Administration’s (CGA) northern branch said it received a report at 6:30am yesterday morning from the New Taipei City Fire Department about a
IN BEIJING’S FAVOR: A China Coast Guard spokesperson said that the Chinese maritime police would continue to carry out law enforcement activities in waters it claims The Philippines withdrew its coast guard vessel from a South China Sea shoal that has recently been at the center of tensions with Beijing. BRP Teresa Magbanua “was compelled to return to port” from Sabina Shoal (Xianbin Shoal, 仙濱暗沙) due to bad weather, depleted supplies and the need to evacuate personnel requiring medical care, the Philippine Coast Guard (PCG) spokesman Jay Tarriela said yesterday in a post on X. The Philippine vessel “will be in tiptop shape to resume her mission” after it has been resupplied and repaired, Philippine Executive Secretary Lucas Bersamin, who heads the nation’s maritime council, said
REGIONAL STABILITY: Taipei thanked the Biden administration for authorizing its 16th sale of military goods and services to uphold Taiwan’s defense and safety The US Department of State has approved the sale of US$228 million of military goods and services to Taiwan, the US Department of Defense said on Monday. The state department “made a determination approving a possible Foreign Military Sale” to the Taipei Economic and Cultural Representative Office in the US for “return, repair and reshipment of spare parts and related equipment,” the defense department’s Defense Security Cooperation Agency said in a news release. Taiwan had requested the purchase of items and services which include the “return, repair and reshipment of classified and unclassified spare parts for aircraft and related equipment; US Government
More than 500 people on Saturday marched in New York in support of Taiwan’s entry to the UN, significantly more people than previous years. The march, coinciding with the ongoing 79th session of the UN General Assembly, comes close on the heels of growing international discourse regarding the meaning of UN Resolution 2758. Resolution 2758, adopted by the UN General Assembly in 1971, recognizes the People’s Republic of China (PRC) as the “only lawful representative of China.” It resulted in the Republic of China (ROC) losing its seat at the UN to the PRC. Taiwan has since been excluded from