Results 101 to 110 of about 69,296 (307)

Transconductance amplifier for optical metrology applications of light-emitting diodes

, 2020
Light-emitting diodes (LEDs) have many applications in optical metrology. Depending on the measurement scheme, an LED might be driven for example using constant current, amplitude or pulse-width modulated current, or current pulses. We present the design
Ikonen, E., Poikonen, T., Dönsberg, Timo; id_orcid, Poikonen, Tuomas, Ikonen, Erkki, Dönsberg, T.   +5 more
core   +1 more source

Seedless One‐Pot Synthesis of Colloidal InAs Quantum Dots Enabling a High‐Accuracy Photoplethysmography Oximeter

Advanced Science, EarlyView.
A real‐time, non‐contact photoplethysmography (PPG) system based on InAs colloidal quantum dots (CQDs) synthesized via a seedless injection synthesis is demonstrated. The measured oxygen saturation shows considerable agreement with commercial PPG devices.
Beom Kwan Kim, Seungin Jee, Yongnam Ahn, In‐Suh Lee, Dongeon Kim, Seongchong Park, Yujin Jung, In‐Ho Bae, Se‐Woong Baek   +8 more
wiley   +1 more source

Foundations of Metrology

Journal of Research of the National Bureau of Standards, 1981
The theory of measurement has attracted the attention of a number of philosphers whose works remain largely unknown to metrologists. Recent work in the development of Measurement Assurance Programs has demonstrated the power of this theory as a tool for guiding the development of measurement systems.
openaire   +2 more sources

Comparison of Robust Filtration Techniques in Geometrical Metrology

, 2012
Filtration is one of core elements of analysis tools in geometrical metrology. Filtration techniques are progressing along with the advancement of manufacturing technology.
Lou, Shan, Zeng, Wenhan, Jiang, Xiangqian, Jiang, Xiang, Scott, Paul J.   +4 more
core  

Electrostatic Potential Complementarity for Thickness‐Tolerant Cathode Interlayers in High‐Efficiency Organic and Tandem Solar Cells

Advanced Science, EarlyView.
Two model molecules — trimesic acid (TMA) and phloroglucinol (PG) — with opposite central electrostatic potential (ESP) distributions are employed to elucidate how molecular electrostatic interactions regulate the cathode interlayer (CIL) PDINN. Electrostatic potential complementarity is revealed as the intrinsic origin of thickness sensitivity in CILs,
Xiaoman Ding, Dana Mukasheva, Jiaxu Che, Guangye Zhang, Xiuze Hei, Haoran Lin, Jie Lv, Patrick Fong, Zhiwei Ren, Annie Ng, Mingjian Yuan, Hongyu Zhang, Gang Li, Hanlin Hu   +13 more
wiley   +1 more source

Terahertz pump-probe experiment at the synchrotron light source MLS

, 2013
We have developed a pump-probe experiment utilizing broad-band coherent terahertz synchrotron radiation provided by the Metrology Light Source (MLS).
H.-W. Hubers, Hoehl, Arne, Pohl, Andreas, Ulm, Gerhard, Müller, Ralph, R. Muller, Pavlov, Sergey, A. Pohl, S. G. Pavlov, M. Ries, G. Wustefeld, Wüstefeld, Godehard, Hübers, Heinz-Wilhelm, Ries, Markus, G. Ulm, A. Hoehl   +15 more
core   +1 more source

phockett/Quantum-Metrology-with-Photoelectrons-Vol3: v25/08/23: Includes Docker details and minor updates

, 2023
This release with Docker build additions and minor updates. Full build otherwise as per previous release https://github.com/phockett/Quantum-Metrology-with-Photoelectrons-Vol3/releases/tag/v310723pm Now linked to Zenodo archive.
actions-user, Paul Hockett
core   +1 more source

Adsorption of Forever Chemical Pollutants: The Physical Chemistry of PFAS Near Surfaces

Advanced Science, EarlyView.
Current adsorption‐based remediation techniques for removing per‐ and polyfluoroalkyl substances (PFAS) from water are limited by knowledge gaps on PFAS behavior near solid surfaces. This review provides a state of the art on theoretical and experimental aspects of PFAS adsorption.
Nada Ben Amor, Daniela Bauer, Benjamin Braconnier, Benoit Coasne   +3 more
wiley   +1 more source

Quantum Metrology in the Finite-Sample Regime

PRX Quantum
In quantum metrology, a major application of quantum technologies, the ultimate precision of estimating an unknown parameter is often stated in terms of the Cramér-Rao bound.
Johannes Jakob Meyer, Sumeet Khatri, Daniel Stilck França, Jens Eisert, Philippe Faist   +4 more
doaj   +1 more source

The role of tribology and metrology in the latest development of bio-materials

, 2009
Total joint replacement is one of the most common elective surgical procedures performed worldwide, with an estimate of 1.5 million operations performed annually.
Chakrararty, Gautum, Jiang, X., Blunt, Liam, Bills, Paul J., Chakrabarty, G., Jiang, Xiang, Hardacker, Catherine, Bills, P., Hardaker, C., Blunt, L.   +9 more
core   +1 more source