Posts Tagged ‘materials science’
“Nanotechnology is an idea that most people simply didn’t believe”*…
Indeed, in the 1980s, even as nanotech pioneer Erik Drexler, a graduate student at MIT at the time, was doing the early work of defining and charting a course for the nascent field, MIT’s departments of electric engineering and computer science refused to approve his Ph.D. topic and plan of study (though ultimately the Media Lab did, and Erik earned his doctorate).
Today the reality– and centrality– of the field are only too apparent and have become the subject of trade and industrial policy… because while the U.S. led in the development of nanotech science, it lags in manufacturing and commercialization. In an excerpt from their book Industrial Policy for the United States: Winning the Competition for Good Jobs and High-Value Industries, Ian Fletcher and Marc Fasteau explain…
Nanotechnology is the manipulation of matter at scales from a fraction of a nanometer to a few hundred nanometers — sizes between individual atoms and small single-celled organisms — at which it has radically different properties. Nanotech is already significant in many industries. Integrated circuits are a form of nanotech. Other nanotech provides the light, strong composites in aircraft and space vehicles. Still other nanotech powers the solid-state lasers used to transmit information through the internet and the light-emitting diodes in LED light bulbs and flat-screen TVs. Nanotech also makes possible solar cells, the batteries in electric cars, and medical technologies such as vaccines. It is thus the unifying thread of many of today’s most advanced technologies. Unfortunately, America is falling behind.
In the future, nanotech-based quantum computing and communications will lead to more powerful computers, transforming national security and internet commerce by making currently secret communications insecure. Medical nanotechnologies will permit targeted interventions at the cellular level, providing new weapons against diseases, biological weapons, and defenses against them. China is known to be working on these.
Much of the science underpinning these advances was developed at firms and universities in the US. But the huge manufacturing industries built on it are mostly overseas. For example, the organic light-emitting diode (OLED) technology Kodak created didn’t save that firm from going bankrupt in 2012. But it did enable lucrative businesses for Korea’s Samsung, to whom Kodak licensed the technology, and LG, which bought Kodak’s entire OLED business in 2009. Today, American firms like Nanosys and Universal Display develop important nanotechnologies, but do not actually manufacture the end products and are thus relatively small.
How did the US get itself into this situation? A major government program, the National Nanotechnology Initiative (NNI), has been funded since 2001, but Washington failed to appreciate the importance of having both a technology and a manufacturing strategy. The prevailing wisdom was that if the academic science was supported, mass manufacturing would follow automatically. By contrast, successful rival nations in nanotech have focused on making these technologies manufacturable at scale, employing every policy tool from R&D subsidies to cheap capital to tariffs. A 2020 National Academies review of the NNI urged that the US recognize that ‘the recent, focused, and in some cases novel commercialization approaches of other nations may be yielding better societal outcomes.’…
A little wonky, but both fascinating and important: “Nanotechnology,” via the invaluable Delanceyplace.com.
(Image above: source)
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As we get small, we might send miniscule birthday greetings to a man who whose work has contributed to the development of medical applications of nanotech: Bert Sakmann; he was born on this date in 1942. A cell physiologist, he shared the Nobel Prize in Physiology or Medicine (with Erwin Neher) in 1991 for their work on “the function of single ion channels in cells”– work made possible in part by their invention of the patch clamp.
“It’s peculiar. It’s special. There’s very little of it, but it has this pivotal role in the universe.”*…
One of the oldest, scarcest elements in the universe has given us treatments for mental illness, ovenproof casserole dishes, and electric cars. Increasingly, our response to climate change seems to depend on it. But how much do we really know about lithium? Jacob Baynham explains…
The universe was born small, unimaginably dense and furiously hot. At first, it was all energy contained in a volume of space that exploded in size by a factor of 100 septillion in a fraction of a second. Imagine it as a single cell ballooning to the size of the Milky Way almost instantaneously. Elementary particles like quarks, photons and electrons were smashing into each other with such violence that no other matter could exist. The primordial cosmos was a white-hot smoothie in a blender.
One second after the Big Bang, the expanding universe was 10 billion degrees Kelvin. Quarks and gluons had congealed to make the first protons and neutrons, which collided over the course of a few minutes and stuck in different configurations, forming the nuclei of the first three elements: two gases and one light metal. For the next 100 million years or so, these would be the only elements in the vast, unblemished fabric of space before the first stars ignited like furnaces in the dark to forge all other matter.
Almost 14 billion years later, on the third rocky planet orbiting a young star in a distal arm of a spiral galaxy, intelligent lifeforms would give names to those first three elements. The two gases: hydrogen and helium. The metal: lithium.
This is the story of that metal, a powerful, promising and somehow still mysterious element on which those intelligent lifeforms — still alone in the universe, as far as they know — have pinned their hopes for survival on a planet warmed by their excesses…
[Baynham tells the story of this remarkable element, the development of it many uses (in psychopharmacology, in materials science, and of course in electronics– especially batteries), the rigors of extracting it for those purposes, and the challenges that its scarcity– and its potency– present…]
… Long before cell phones and climate anxiety and the Tesla Model Y, long before dinosaurs and the first creatures that climbed out of the ocean to walk on land, long before the Earth formed from swirling masses of cosmic matter heavy enough to coalesce, back, way back, to the infant universe, to the dawn of matter itself, there were just three types of atoms — three elements in the blank canvas of space. One of them was lithium. It was light, fragile and extremely reactive, its one outer electron tenuously held in place.
Everything we have done with lithium, all its wondrous applications in energy, industry and psychiatry, somehow hinges on this basic structure, a sort of magic around which we’re increasingly engineering our future. Lightness is usually associated with abundance on the periodic table — almost 99% of the mass of the universe is just the lightest two elements. Lithium, however, is the third lightest element and still mysteriously scarce…
That most elemental of elements: “The Secret, Magical Life of Lithium,” from @JacobBaynham in @noemamag.com.
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As we muse on materials, we might send densely-packed birthday greetings to Philip W. Anderson; he was born on this date in 1923. A theoretical physicist, he shared (with John H. Van Vleck and Sir Nevill F. Mott) the 1977 Nobel Prize for Physics for his research on semiconductors, superconductivity, and magnetism. Anderson made contributions to the theories of localization, antiferromagnetism, symmetry breaking including a paper in 1962 discussing symmetry breaking in particle physics, leading to the development of the Standard Model around 10 years later), and high-temperature superconductivity, and to the philosophy of science through his writings on emergent phenomena. He was a pioneer in the field that he named: condensed matter physics, which has found applications in semiconductor and laserr technology, magnetic storage, liquid crystals, optical fibers, nanotechnology, quantum computing, and biomedicine.
“In our society (that is, advanced western society) we have lost even the pretence of a common culture”*…
In 1959. C.P. Snow gave a now-famous series of lectures (quickly published): The Two Cultures, lamenting the cleaving of Western culture into spheres of science and humanities, neither of which could clearly understand, thus effectively communicate with the other. Jeroen Bouterse reminds us that Snow had a predecessor…
Several years before C.P. Snow gave his famous lecture on the two cultures, the American physicist I.I. Rabi wrote about the problem of the disunity between the sciences and the humanities. “How can we hope”, he asked, “to obtain wisdom, the wisdom which is meaningful in our own time? We certainly cannot attain it as long as the two great branches of human knowledge, the sciences and the humanities, remain separate and even warring disciplines.”
Rabi had been interested in science since his teenage years, and grown up to be a Nobel-prize winning physicist. He had also been an important player in the Allied technological effort during World War II, as associate director of the ‘Rad Lab’: the radiation laboratory at MIT that developed radar technology. The success of Rad Lab, Rabi later reflected, had not been a result of a great amount of theoretical knowledge, but of the energy, vitality, and self-confidence of its participants. In general, Rabi’s views on science and technology were somewhat Baconian: science should be open to the unexpected, rather than insisting on staying in the orbit of the familiar.
In Rabi’s accounts of his time leading Rad Lab, he would also emphasize the way in which he insisted on being let in on military information. “We are not your technicians”, he quoted himself, adding: “a military man who wants the help of scientists and tells them half a story is like a man who goes to a doctor and conceals half the symptoms.” Indeed, the key to understanding Rabi’s worries about the two cultures – he would go on to embrace Snow’s term – is his view of the role science ought to play in public life. Scientists should not just be external consultants, delivering inventions or discoveries on demand or listing the options available to the non-specialist. In some stronger sense, they should be involved in directing policy decisions.
Even more than Rabi’s positive experience with the military during the war, his views were informed by his frustration with the lack of agency scientific experts were able to exercise in the immediate aftermath. Already in 1946, he complained in a lecture that scientists had been used to create the atom bomb, but they had not been consulted about its use, and the fact that many of them had been opposed to it had made no difference. “To the politician, the scientist is like a trained monkey who goes up to the coconut tree to bring down choice coconuts.”
This feeling would increase with the decision to develop a hydrogen bomb. In 1949, Rabi was one of eight experts in the General Advisory Committee (GAC) to the Atomic Energy Commission (AEC), in which capacity he co-signed a unanimous report arguing that the ‘Super’ should not be built. (Rabi, together with Fermi, signed a minority opinion to the effect that the US should first get the USSR to pledge that it would not seek to develop an H-bomb.)
Rather than signaling to the world that he sought to avoid an arms race, however, President Truman did the opposite: without knowing that it was even possible, he announced publicly that the US would “continue its work on all forms of atomic weapons, including the so-called hydrogen or super-bomb.” Rabi would never forgive Truman…
… in the context of Rabi’s broader thinking about science in modern culture, as he came to develop and express it in the decades after the war [the] was not just that more technical expertise needed to be brought to the decision tables; the point was that scientists should make their moral views heard. In the atomic age, where science created so much power, science’s representatives should wield some of that power. From the perspective of the scientists, this was because the atom bomb had demonstrated beyond doubt that science was not a disinterested search for objective truth; it had consequences, and scientists should accept responsibility for those consequences. They should consider not just the means, but the goals…
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It is a soft law in two cultures discourse that precisely those who most bewail the chasm between science and the humanities end up deepening it. In Rabi’s case, the reason is that he believed in the two cultures; he believed there was something special about the culture and tradition of modern natural science that was a source of wisdom and strength, and that in many ways the project of the humanities was its opposite. Understanding of nature was progressive and forward-looking, was a matter of hope and optimism, while understanding of the human world was old, had already been achieved in ancient societies, and was more a matter of transmission than of innovation. Historian of physics Michael Day notes that over time, Rabi talked less about merging the two traditions and more about putting science at the center of education…
In spite of this, I think Rabi saw correctly that picturing science and the humanities as opposing forces helped him to identify a real fault line in modern culture. The notion that science has to stay on one side of the fact-value-distinction, while the humanities are closer to the actual formation of values, was not a figment of his imagination, and it did stand in the way of his cultural ideals. While not quite the synthesis between the two sides that he sometimes claimed to aim for, the answer he gave – that neither science nor the humanities, nor committees ‘discover’ values, but that values are immanent in activities, in ways of life; that the age of science came with the scientific way of life, with its own values, and that these values were potentially culture-defining – was compelling…
… there remains something inspiring in Rabi’s vision of a common quest for knowledge and understanding, of people working together in activities that are both exciting and important, and of a society that takes those people and their projects not as resources to be exploited, but as models to be emulated.
“The atom bomb and the two cultures: I.I. Rabi on the sciences and the humanities,” from @jeroenbou in @3QD. Eminently worth reading in full.
(Image above: source)
* C. P. Snow, The Two Cultures
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As we search for synthesis, we might send insightful birthday greetings to Walter Kohn; he was born on this date in 1923. A theoretical physicist and theoretical chemist, he shared the 1998 Nobel Prize in Chemistry (with John Pople); Kohn was honored for his development of density functional theory, which made it possible to calculate quantum mechanical electronic structure by equations involving electronic density (rather than the much more complicated many-body wavefunction). This computational simplification led to more accurate calculations on complex systems and to many new insights, and became an essential tool for materials science, condensed-phase physics, and the chemical physics of atoms and molecules.
“What we need is the celestial fire to change the flint into the transparent crystal, bright and clear”*…
… or so it used to be. Scientists at Google DeepMind and the Lawrence Berkeley National Laboratory have applied AI to the task– with encouraging results…
Modern technologies from computer chips and batteries to solar panels rely on inorganic crystals. To enable new technologies, crystals must be stable otherwise they can decompose, and behind each new, stable crystal can be months of painstaking experimentation.
… in a paper published in Nature, we share the discovery of 2.2 million new crystals – equivalent to nearly 800 years’ worth of knowledge. We introduce Graph Networks for Materials Exploration (GNoME), our new deep learning tool that dramatically increases the speed and efficiency of discovery by predicting the stability of new materials.
With GNoME, we’ve multiplied the number of technologically viable materials known to humanity. Of its 2.2 million predictions, 380,000 are the most stable, making them promising candidates for experimental synthesis. Among these candidates are materials that have the potential to develop future transformative technologies ranging from superconductors, powering supercomputers, and next-generation batteries to boost the efficiency of electric vehicles.
GNoME shows the potential of using AI to discover and develop new materials at scale. External researchers in labs around the world have independently created 736 of these new structures experimentally in concurrent work. In partnership with Google DeepMind, a team of researchers at the Lawrence Berkeley National Laboratory has also published a second paper in Nature that shows how our AI predictions can be leveraged for autonomous material synthesis.
We’ve made GNoME’s predictions available to the research community. We will be contributing 380,000 materials that we predict to be stable to the Materials Project, which is now processing the compounds and adding them into its online database. We hope these resources will drive forward research into inorganic crystals, and unlock the promise of machine learning tools as guides for experimentation…
GNoME suggests that materials science may be the next frontier to be turbocharged by artificial intelligence (see this earlier example from biotech): “Millions of new materials discovered with deep learning.”
* Henry Wadsworth Longfellow
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As we drive discovery, we might recall that it was on this date in 1942 that a team of scientists led by Enrico Fermi, working inside an enormous tent on a squash court under the stands of the University of Chicago’s Stagg Field, achieved the first controlled nuclear fission chain reaction… laying the foundation for the atomic bomb and later, nuclear power generation– that’s to say, inaugurating the Atomic Age.
“…the Italian Navigator has just landed in the New World…”
– Coded telephone message confirming first self-sustaining nuclear chain reaction, December 2, 1942.
Indeed, exactly 15 years later, on this date in 1957, the world’s first full-scale atomic electric power plant devoted exclusively to peacetime uses, the Shippingport Atomic Power Station, reached criticality; the first power was produced 16 days later, after engineers integrated the generator into the distribution grid of Duquesne Light Company.
“Every decently-made object… is not just a piece of ‘stuff’ but a physical embodiment of human energy, testimony to the magical ability of our species to take raw materials and turn them into things of use, value and beauty”*…
Indeed, as the Materials Library of the Institute for Making at UCL brilliantly demonstrates, that’s often true of the materials themselves…
The Materials Library is a collection of some of the most wondrous materials on earth, gathered from sheds, labs, grottoes and repositories around the world. It is a resource, laboratory, studio, and playground for the curious and material-minded to conduct hands-on research through truly interdisciplinary inquiry and innovation. The collection is accessible to Institute of Making members day to day, and to the public at Materials Library Discovery sessions.
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As we celebrate stuff, we might spare a thought for Addison Emery Verrill; he died on this date in 1926. An invertebrate zoologist, museum curator, and university professor, he is best remembered as curator of zoology at the Peabody Museum of Natural History at Yale University, where he developed one of the largest, most valuable zoological collections in the U.S.
Verill trained under Louis Agassiz at Harvard; then, at age 25, became Yale University’s first professor of Zoology. His lifelong devotion to taxonomic research yielded the development of extensive collections at Yale in a wide variety of taxa. From 1871-87, while he was in charge of scientific explorations by the U.S. Commission of Fish and Fisheries, Verrill found and described hundreds of new marine specimens. His expeditions took him to the Atlantic and Pacific coasts of North America and to Hawaii and Central America. He published more than 350 papers and monographs, including descriptions of more than a thousand species of animals in virtually every major taxon. His breadth of interests included parasitology, mineralogy and botany.
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