Results 11 to 20 of about 310,458 (332)

A Taper-in-Taper Structured Interferometric Optical Fiber Sensor for Cu2+ ion Detection

open access: yesItalian National Conference on Sensors, 2022
Copper ion is closely associated with the ecosystem and human health, and even a little excessive dose in drinking water may result in a range of health problems. However, it remains challenging to produce a highly sensitive, reliable, cost-effective and
Zidan Gong   +8 more
semanticscholar   +1 more source

Optical fibre taper-enabled waveguide photoactuators

open access: yesNature Communications, 2021
Photoactuators have attracted significant interest for soft robot and gripper applications, yet most of them rely on free-space illumination, which requires a line-of-site low-loss optical path. While waveguide photoactuators can overcome this limitation,
Jianliang Xiao   +13 more
semanticscholar   +1 more source

Minimum bias multiple taper spectral estimation [PDF]

open access: yesIEEE Transactions on Signal Processing, 2018
Two families of orthonormal tapers are proposed for multitaper spectral analysis: minimum bias tapers, and sinusoidal tapers {/spl upsisup (k/)}, where /spl upsisub nsup (k/)=/spl radic/(2/(N+1))sin(/spl pi/kn/N+1), and N is the number of points.
K. Riedel, Alexander Sidorenko
semanticscholar   +1 more source

Resolving Photon Numbers Using a Superconducting Nanowire with Impedance-Matching Taper.

open access: yesNano letters (Print), 2020
Time- and number-resolved photon detection is crucial for quantum information processing. Existing photon-number-resolving (PNR) detectors usually suffer from limited timing and dark-count performance or require complex fabrication and operation. Here we
Di Zhu   +6 more
semanticscholar   +1 more source

Superconducting nanowire single-photon detector with integrated impedance-matching taper [PDF]

open access: yesApplied Physics Letters, 2018
Conventional readout of a superconducting nanowire single-photon detector (SNSPD) sets an upper bound on the output voltage to be the product of the bias current and the load impedance, $I_\mathrm{B}\times Z_\mathrm{load}$, where $Z_\mathrm{load}$ is ...
Di Zhu   +13 more
semanticscholar   +1 more source

Ultra-compact low-loss broadband waveguide taper in silicon-on-insulator [PDF]

open access: yes, 2017
A novel design of large bandwidth, fabrication tolerant, CMOS-compatible compact tapers (15 um) have been proposed and experimentally demonstrated in silicon-on-insulator.
Purnima Sethi   +2 more
semanticscholar   +1 more source

Radiographic evaluation of the technical quality of root canal filling in Riyadh government and private hospitals

open access: yesSaudi Endodontic Journal, 2020
Introduction: The aim of this study is to evaluate radiographically the quality of root filling in endodontically treated teeth among a Riyadh population in governmental and private hospitals.
Mohammad I Al-Obaida   +4 more
doaj   +1 more source

Simulation and experiment of abrasive flow finishing characteristics of nozzle jetting hole runner

open access: yesJin'gangshi yu moliao moju gongcheng, 2023
When there is a certain inlet chamfer and nozzle taper at the inlet of the nozzle orifice passage, the efficiency of the engine can be further improved by improving the fuel atomization effect of the nozzle.
Mengnan LI   +3 more
doaj   +1 more source

Fabrication of high-quality-factor photonic crystal microcavities in InAsP/InGaAsP membranes [PDF]

open access: yes, 2004
Optical fiber taper waveguides are used to improve the efficiency of room temperature photoluminescence measurements of AlGaAs microdisk resonant cavities with embedded self-assembled InAs quantum dots.
Adachi   +17 more
core   +1 more source

Uma nova abordagem para o método geométrico usando o índice da parábola

open access: yesCiência Florestal, 2013
http://dx.doi.org/10.5902/198050988460O objetivo deste artigo é apresentar uma nova abordagem para o método geométrico, substituindo o coeficiente angular da reta pelo índice da parábola na geração de equações taper para estimar o volume de árvores ...
Christian Dias Cabacinha   +4 more
doaj   +1 more source

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