Results 71 to 80 of about 9,378 (232)
Progress toward a Soft X-ray Polarimeter
, 2013 We are developing instrumentation for a telescope design capable of measuring linear X-ray polarization over a broad-band using conventional spectroscopic optics.
Gentry, Eric S. +5 more
core +1 more source
Harmonically-related diffraction gratings-based interferometer for quadrature phase measurements [PDF]
, 2006 We demonstrate the use of shallow diffraction gratings for quadrature phase interferometry. A single shallow diffraction grating-based Michelson interferometer yields only trivial (0° or 180°) phase shift between different output ports.
Cui, Xiquan +4 more
core +1 more source
Advanced Science, EarlyView.An unconventional synthesis strategy enables the direct growth of shape‐tunable nanostructures, from multi‐dot to multi‐arm designs, on silica optical fiber tips. This breakthrough boosts the sensing power of plasmonic fiber‐optic probes and unlocks new possibilities for large‐scale, in situ nanofabrication on silicate‐based substrates, including ...
Di Zheng +10 more
wiley +1 more source
Heat Transfer, EarlyView.ABSTRACT Thermal conductivity of two‐dimensional (2D) materials is important to characterize as this will govern thermal transport physics in the various thermal and energy applications benefitting from the unique properties of these materials.
Micah P. Vallin +7 more
wiley +1 more source
X-ray interferometry with transmissive beam combiners for ultra-high angular resolution astronomy
, 2009 Interferometry provides one of the possible routes to ultra-high angular resolution for X-ray and gamma-ray astronomy. Sub-micro-arc-second angular resolution, necessary to achieve objectives such as imaging the regions around the event horizon of a ...
Krizmanic, J. F., Skinner, G. K.
core +1 more source
Low‐Frequency Raman Spectra of Natural Pyrrhotites: Polarization Dependence for Its Lattice Modes
Journal of Raman Spectroscopy, EarlyView.The present study found low‐wavenumber Raman modes of pyrrhotite Fe1‐xS at ~68, ~87, ~117, and ~230 cm−1 for the first time, thanks to a lab‐built Raman spectrometer, in which the optical path of the incident laser was purged by Ar gas. The sufficiently high signal‐to‐noise and signal‐to‐base ratios enabled us to obtain the polarization dependence of ...
Shu‐hei Urashima +5 more
wiley +1 more source
Diffractive oblique plane microscopy [PDF]
, 2019 Imaging of neuronal activity with fluorescent indicators is an important technique in neuroscience. However, it remains challenging to record volumetric image data at fast frame rates and good resolution.
Hoffmann, Maximilian +1 more
core +1 more source
Autoencoding Raman Spectra to Predict Analyte Concentrations
Journal of Raman Spectroscopy, EarlyView.An autoencoder‐based machine learning regression model was developed using datasets from nuclear and biopharmaceutical industries, utilising spatial heterodyne spectrometers under spontaneous and resonance conditions. This study focuses on the impact of small data volumes on data augmentation and architecture designs.
Alex Poppe +4 more
wiley +1 more source
Control of femtosecond multi-filamentation in glass by designable patterned optical fields
AIP Advances, 2016 We present a scheme for realizing femtosecond multi-filamentation with designable quantity and locations of filaments, based on the control of multi-focal spots formed by patterned optical fields (POFs) composed of multiple individual optical fields ...
Ping-Ping Li +8 more
doaj +1 more source
Iridescence in Meat Caused by Surface Gratings
Foods, 2013 The photonic structure of cut muscle tissues reveals that the well-ordered gratings diffract light, producing iridescent colours. Cut fibrils protruding from the muscle surface create a two-dimensional periodic array, which diffract light at specific ...
Ali Kemal Yetisen +2 more
doaj +1 more source