A researcher who coauthored measurements of chemical bonding around individual impurity atoms in graphene. Scanning transmission electron microscopy located silicon impurities, while electron energy loss spectroscopy probed their electronic environment. Comparing differently coordinated sites with calculations connected an atom's visible position to its bonding, extending microscopy beyond identifying where the atoms are.^[ref]

A researcher who coauthored pyroelectric generator experiments using zinc oxide nanowire arrays. Changing temperature with time changes the material's spontaneous polarization, producing an electrical response. The work explored energy conversion when the whole environment warms or cools, a situation distinct from maintaining a spatial temperature difference across a thermoelectric generator.^[ref]

An experimental physicist who coauthored measurements of size-dependent melting in gold nanoparticles with J-P. Borel. The experiment used electron diffraction on particles down to about two nanometers in diameter and compared the results with alternative thermodynamic models. It made the importance of surfaces directly measurable: a small particle need not melt at the bulk material's temperature.^[ref]

An experimental physicist who, with Ph. Buffat, measured how gold-particle melting depends on particle size. Electron diffraction tracked the loss of crystalline order during heating. Because the sample contained different particle sizes, careful analysis was needed to assign a melting temperature to a particular diameter, illustrating how a distribution of sizes can blur a nanoscale transition.^[ref]

A physicist who coauthored the discovery of exchange bias with C. P. Bean. Their cobalt particles had an oxide shell, placing ferromagnetism in direct contact with antiferromagnetism. The resulting directional effect in magnetic reversal made the interface an active part of the experiment and motivated the study of coupling between unlike magnetic materials.^[ref]

A physicist who, with W. H. Meiklejohn, reported exchange bias in particles combining a ferromagnetic metal and an antiferromagnetic oxide. The interface introduces a preferred magnetic direction through coupling between the two materials. This showed that the contact between different magnetic orders can change how a material reverses its magnetization, rather than merely adding their separate responses.^[ref]

A researcher who coauthored a light-driven method for joining silver nanowires. Small gaps at crossing wires concentrate light and localize heating where a junction is needed. Once the wires connect, the optical heating changes and the process limits itself. The experiment made conducting networks on heat-sensitive supports, connecting nanoscale field concentration with practical electrode fabrication.^[ref]

An experimental physicist who coauthored electron-focusing measurements using two quantum point contacts. One contact injected electrons into a two-dimensional electron gas, and the other collected them after a magnetic field bent their trajectories. Focusing peaks and additional interference structure connected the device geometry with ballistic motion and the quantum coherence of electronic edge states.^[ref]

A researcher who studies materials and devices using the thermoelectric effect. With Eric S. Toberer, he reviewed strategies for improving the thermoelectric figure of merit by controlling carrier concentration and reducing thermal conductivity. The central challenge is coupled transport: improving one property can worsen another. The material therefore has to be designed as a complete heat-and-charge transport system.^[ref]

A researcher in materials for the thermoelectric effect who coauthored a review with G. Jeffrey Snyder. Their account explains the competing requirements for a high thermoelectric figure of merit: useful electrical transport must coexist with weak heat transport. Complex crystal structures and nanoscale design offer ways to suppress the phonon contribution to thermal conductivity while retaining useful electronic behavior.^[ref]

A researcher who coauthored molecular dynamics simulations of radiation damage in zirconolite. The calculation followed the collision cascade produced by an energetic recoil nucleus after alpha decay. It distinguished a strongly disordered central region from isolated point defects farther away, helping connect a single decay event with the structural damage relevant to a nuclear-waste material.^[ref]

An experimental physicist who studied electrical injection of electron spin and spin accumulation in lateral metallic devices. A separate detector measured the spin signal away from the main charge-current path, suppressing ordinary magnetoresistance backgrounds. Comparing electrode materials and measuring at low and room temperature made the apparatus a test of how far spin information survives in a metal.^[ref]

A researcher who coauthored the synthesis and characterization of light-emitting core-shell quantum dots. A zinc sulfide shell surrounded a cadmium-selenide core, improving emission while the core size tuned its color. Optical measurements and structural probes were combined to connect the shell's growth with photoluminescence, making surface treatment part of the design of a nanoscale light source.^[ref]

A researcher who coauthored liquid-phase production of graphene from graphite. Suitable solvents stabilize separated sheets, helping balance the energetic cost of exfoliation. The study checked the sheets with Raman spectroscopy, transmission electron microscopy and electron diffraction, and demonstrated conducting films and composites. It addressed the manufacturing problem of obtaining useful quantities while preserving the material's structure.^[ref]

An experimental physicist who coauthored the self-assembly of ordered colloidal crystals in a thin nematic liquid crystal. Particles distort the surrounding orientational order and create topological defects; sharing those distortions can bind neighboring particles. The observed structures depended on the type of local ordering, showing how a host material's defects can organize suspended particles into larger patterns.^[ref]

An experimental physicist who coauthored the 1988 observation of quantized electrical conductance in quantum point contacts. A gate narrowed a constriction in a two-dimensional electron gas. The conductance changed in steps as transverse conducting modes became available, making a controllable semiconductor device a direct demonstration that a narrow channel carries current through discrete quantum modes.^[ref]

An experimental physicist who coauthored a 2004 report of large room-temperature tunnelling magnetoresistance in iron electrodes separated by a crystalline magnesium-oxide barrier. Changing the relative magnetic alignment changes electrical electrical resistance, allowing a magnetic configuration to be read electrically. The work connects controlled crystalline interfaces with devices that use electron spin as well as charge.^[ref]

A researcher who, with Melbourne L. Winton, investigated dimensional instability during thermal cycling of uranium. Repeated temperature changes could produce permanent distortion rather than merely reversible thermal expansion. Their report linked a reactor-engineering problem with the response of a textured crystalline metal, using controlled cycling to explore when damaging changes developed.^[ref]

A researcher who coauthored a 1952 study of repeated heating and cooling of uranium. The practical problem was persistent dimensional change in reactor fuel, including warping and surface distortion. The experiments examined faster thermal cycles and the conditions producing damage, connecting thermal loading with the material's crystal orientation and internal structure.^[ref]

A researcher who, with Motomasa Fuse, studied how microstructure affects irradiation growth in zirconium alloys. Their model linked atomic-scale point defects to macroscopic deformation and compared predictions with experiments. It predicted less growth for larger grains, reduced grain aspect ratio or lower dislocation density, showing why a material's processing history can matter alongside its chemical composition.^[ref]