Results 101 to 110 of about 6,802,009 (374)
Advanced Engineering Materials, EarlyView.This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff +9 more
wiley +1 more source
Three-dimensional angular deviation and diffraction efficiency of a grating in Littrow-configuration ECDL [PDF]
, 2023 Biao Chen +5 more
openalex +2 more sources
Considering Grayscale Process and Material Properties for Robust Multilevel Diffractive Flat Optics
PhotonicsArbitrarily designed flat optics directly manipulate the light wavefront to reproduce complex optical functions, enabling more compact optical assemblies and microsystem integration.
Diogo E. Aguiam +8 more
doaj +1 more source
, 2007 We present a formalism of x-ray dynamical diffraction from volume diffractive optics with large numerical aperture and high aspect ratio, in an analogy to the Takagi-Taupin equations for strained single crystals.
A. Authier +15 more
core +1 more source
High Quantum Efficiency Nanopillar Photodiodes Overcoming the Diffraction Limit of Light.
Nano letters (Print), 2016 InAs1-xSbx nanowires have recently attracted interest for infrared sensing applications due to the small bandgap and high thermal conductivity. However, previous reports on nanowire-based infrared sensors required low operating temperatures in order to ...
Wook-Jae Lee +5 more
semanticscholar +1 more source
Advanced Engineering Materials, EarlyView.This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat +7 more
wiley +1 more source
Practical design considerations and performance characteristics of high numerical aperture holographic lenses [PDF]
The diffraction efficiency of interferometrically formed holographic lenses is influenced by the recording geometry and properties of the recording material. Variations in efficiency increase when attempting to make high numerical aperture elements.
Kostuk, Raymond K.
core +1 more source
Liquid-Crystal Blazed-Grating Beam Deflector [PDF]
, 2000 A transmission-type nonmechanical multiple-angle beam-steering device that uses liquid-crystal blazed grating has been developed. Sixteen steering angles with a contrast ratio of 18 has been demonstrated.
Maker, Paul +4 more
core
, 2017 The experimental limitations in the signal enhancement and spatial resolution in spectroscopic imaging have been always a challenging task in the application of near-field spectroscopy for nanostructured materials in the sub-diffraction limit.
Chini, Tapas Kumar +4 more
core +1 more source
Enhanced light extraction efficiency of OLEDs with quasiperiodic diffraction grating layer.
Optics Express, 2016 We presented enhanced light extraction efficiency of organic light emitting diodes (OLEDs) cells with a nano-sized diffraction grating layer. Various diffraction gratings of different morphologies including linear, cubic, hexagonal and quasiperiodic ...
Tae-bin Lim +3 more
semanticscholar +1 more source