Keith A. Nelson

TL;DR: In this article, the authors used X-ray micro-diffraction and laser-induced transient grating measurements to understand how injected helium interacts with displacement damage and modifies the physical properties of tungsten.

TL;DR: In this paper, an apparatus for detecting electromagnetic radiation within a target frequency range is provided, which includes a substrate and one or more resonator structures disposed on the substrate, and a measure of the change in conductivity of the substrate due to the induced charge carriers provides an indication of the presence of the target electromagnetic radiation.

TL;DR: In this article, the frequency tunable phonon polariton waves were generated and detected using an original optical configuration of the transient grating method, where the excitation beam was shone onto a transmission grating after being transmitted through a lens, and a lithium niobate wafer located at a defocus position of the lens was irradiated by an expanded or reduced image of the transmitted image.

TL;DR: In this paper, an experimental method capable of evaluating the in-and out-of-plane components of the anisotropic thermal diffusivity in supported and unsupported thin polymer films is described.

TL;DR: In this article, the free-carrier absorption of germanium-type semiconductors at 300 K in the terahertz (THz) frequency range was investigated.