Results 21 to 30 of about 498,908 (256)

Generation of High-Power Bottle Beams and Autofocusing Beams

open access: yesIEEE Photonics Journal, 2018
We propose and experimentally demonstrate an optical bottle beam (BB) and an abruptly autofocusing beam (AB), which were generated using a ring-Airy beam array.
Yixian Qian, Songtao Lai, Hongxing Mao
doaj   +1 more source

Ultrasensitive Label-Free Nanosensing and High-Speed Tracking of Single Proteins [PDF]

open access: yes, 2016
: Label-free detection, analysis, and rapid tracking of nanoparticles is crucial for future ultrasensitive sensing applications, ranging from understanding of biological interactions to the study of size-dependent classical-quantum transitions.
Hugall, James T.   +2 more
core   +5 more sources

Position sensitive radiation detector [PDF]

open access: yes, 1994
An apparatus and method are disclosed for detecting and locating the origin of a gamma ray in a medical diagnostic imaging system. At least one primary fiber, which is a scintillating optical fiber, is positioned to receive radiation from a gamma ray ...
Anderson, Jon A., Antich, Peter P.
core   +1 more source

AN ALGORITHM FOR AUTOMATED DETECTION OF DELAYED BRAIN ISCHEMIA INDICATOR FROM VIDEO-EEG MONITORING DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
In this work, we propose a new algorithm for detecting the indicator of delayed cerebral ischemia from video-EEG monitoring data. The proposed algorithm combines an algorithm for detecting the effect of interchannel time-frequency synchronization of ...
D. Murashov   +3 more
doaj   +1 more source

Conditional Production of Superpositions of Coherent States with Inefficient Photon Detection [PDF]

open access: yes, 2004
It is shown that a linear superposition of two macroscopically distinguishable optical coherent states can be generated using a single photon source and simple all-optical operations.
Jeong, H.   +3 more
core   +3 more sources

Thin Film Transistor

open access: yesCrystals, 2019
The special issue is "Thin Film Transistor". There are eight contributed papers. They focus on organic thin film transistors, fluorinated oligothiophenes transistors, surface treated or hydrogen effect on oxide-semiconductor-based thin film transistors ...
Ray-Hua Horng
doaj   +1 more source

Tapered optical fiber DNA biosensor for detecting Leptospira DNA

open access: yesAsian Pacific Journal of Tropical Medicine, 2023
Objective: To establish a DNA detection platform based on a tapered optical fiber to detect Leptospira DNA by targeting the leptospiral secY gene. Methods: The biosensor works on the principle of light propagating in the special geometry of the optical ...
Jia-Yong Lam   +2 more
doaj   +1 more source

Detection of acceleration radiation in a Bose-Einstein condensate [PDF]

open access: yes, 2007
We propose and study methods for detecting the Unruh effect in a Bose-Einstein condensate. The Bogoliubov vacuum of a Bose-Einstein condensate is used here to simulate a scalar field-theory, and accelerated atom dots or optical lattices as means for ...
A. Retzker   +4 more
core   +1 more source

Study of Energy Scattering Relation and RCS Reduction Characteristic of Matrix-Type Coding Metasurface

open access: yesApplied Sciences, 2018
In this paper, we present a design of the linear polarization conversion metasurface (MS) for the broadband radar cross section (RCS) reduction based on split-ring resonator (SRR) structure in microwave region.
Jia Ji Yang   +3 more
doaj   +1 more source

Visualizing rotation and reversal of the Néel vector through antiferromagnetic trichroism

open access: yesNature Communications, 2022
Antiferromagnets have great promise for use in spin-based electronics; however, detecting the Neel vector is challenging due to the lack of a net magnetization.
Kenta Kimura   +2 more
doaj   +1 more source

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