Results 151 to 160 of about 700,724 (318)

A Non-Destructive Study of Optical, Geometric and Luminescent Parameters of Active Optical Fibers Preforms

Optics
This work is devoted to the scientific and technical aspects of individual stages of active optical fibers preforms’ optical-geometric parameters metrological control.
Yuri Aleksandrovich Konstantinov, Artem Timofeevich Turov, Konstantin Pavlovich Latkin, D Claude, Irina Sergeevna Azanova   +4 more
doaj   +1 more source

Comparison of optical measurements of critical closing pressure acquired before and during induced ventricular arrhythmia in adults. [PDF]

Neurophotonics, 2022
Lafontant A, Mahanna Gabrielli E, Bergonzi K, Forti RM, Ko TS, Shah RM, Arkles JS, Licht DJ, Yodh AG, Kofke WA, White BR, Baker WB.   +11 more
europepmc   +1 more source

Indirect optical geometry measurements for optically uncooperative measurement objects

tm - Technisches Messen
Abstract The production of microstructures is becoming increasingly flexible in terms of geometry and material, requiring precise and versatile applicable geometry measurement methods. However, current optical methods depend on the optical surface response and need optically cooperative surfaces.
Andreas Tausendfreund, Andreas Fischer
openaire   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Comparison of Measurement Protocols for Internal Channels of Transparent Microfluidic Devices

Metrology
The microfluidic industry faces a significant challenge due to the lack of sensitive and standardized methods. One critical need is the measurement of internal channel dimensions in fully assembled chips.
Joris Kaal, Nicolas Feltin, Marc Lelong, Huabing Yin, Andrew Glidle, Kevin Romieu, Elsa Batista   +6 more
doaj   +1 more source

Noninvasive Optical Measurements of Dynamic Cerebral Autoregulation by Inducing Oscillatory Cerebral Hemodynamics. [PDF]

Front Neurol, 2021
Pham T, Fernandez C, Blaney G, Tgavalekos K, Sassaroli A, Cai X, Bibu S, Kornbluth J, Fantini S.   +8 more
europepmc   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Optical Fiber Nonlinear Coefficient Measurements Using Four-Wave Mixing [PDF]

Optical fiber (OF) nonlinearity and the length are two the most important parameters that determine the amount of nonlinear phenomena occurrence in the optical waveguide. Therefore when considering specific telecommunications OF nonlinear characteristics
Supe, Andis, Poriņš, Jurģis
core  

Nonlinear properties of silicon core optical fibres [PDF]

, 2013
Silica optical fibres are renowned for the framework they have set in modern communications systems, sensors, and biotechnology. One particular trend in current research aims to investigate materials with enhanced optical functionality, high optical ...
Mehta, Priyanth
core  

Mean Differential Continuous Pulse Method for Accurate Optical Measurements of Light-Emitting Diodes and Laser Diodes. [PDF]

J Res Natl Inst Stand Technol, 2021
Zong Y, Hulett J, Koide N, Yamaji Y, Miller CC.   +4 more
europepmc   +1 more source