Results 51 to 60 of about 16,903 (301)

Telespectrograph Patent [PDF]

, 1969
Telespectrograph for analyzing upper atmosphere by tracking bodies reentering atmosphere at high ...
Ameer, G. A., Walters, R. M.
core   +1 more source

Simultaneous Surface Plasmon Resonance and X-ray Absorption Spectroscopy

, 2012
We present here an experimental set-up to perform simultaneously measurements of surface plasmon resonance (SPR) and X-ray absorption spectroscopy (XAS) in a synchrotron beamline.
A. Serrano, Bartoll J., Brongersma L., C. Monton, Friebele E. J., G. R. Castro, J. Rubio-Zuazo, Koningsberger D. C., Kretschmann E., M. A. García, Maier S. A., O. Rodríguez de la Fuente, Raether H., Rather H., V. Collado   +14 more
core   +1 more source

Circular‐Polarization‐Sensitive Organic Photodetectors with a Chiral Nanopatterned Electrode Inverse‐Designed by Genetic Algorithm

Advanced Functional Materials, EarlyView.
A chiral photodetector capable of selectively distinguishing left‐ and right‐handed circularly polarized light is experimentally demonstrated. The device, which features a nanopatterned electrode inverse‐designed by a genetic algorithm within a metal–dielectric–metal nanocavity that incorporates a vacuum‐deposited small‐molecule multilayer, exhibits ...
Kyung Ryoul Park, Jewoong Lee, In‐Suk Choi, Changsoon Kim   +3 more
wiley   +1 more source

A Chopper Stabilized, Current Feedback, Neural Recording Amplifier

IEEE Solid-State Circuits Letters, 2019
Advanced neural prosthetics requires high density neural recording and stimulation electrodes interfacing with the tissue. For an implantable device, area, power consumption, and noise performance are the key design metrics. Due to the low-frequency nature of the recorded signals, chopping technique is inevitable to satisfy the noise requirement while ...
Aria Samiei, Hossein Hashemi
openaire   +2 more sources

Transition From Lattice Oxygen to Radical‐Mediated Oxidation in Ammonium‐Intercalated Birnessite Catalysts for Selective Valorization of Biomass to Produce Formic Acid

Advanced Functional Materials, EarlyView.
The catalytic valorization of biomass represents an essential approach for achieving sustainable chemical production, with formic acid (FA) being recognized as a valuable platform chemical for hydrogen storage and environmentally friendly synthetic applications.
Yiqi Geng, Wei Xiong, Wenhua Xue, Jian Ye, Puranjan Mishra, Rajenahally V. Jagadeesh, Jun Zhao   +6 more
wiley   +1 more source

Design of sigma-delta modulator 10-16 bits for resolver digital converter

Dianzi Jishu Yingyong, 2022
In this paper, a sigma-delta modulator for 10-16 bit resolver digital converter is designed. The modulator is a second-order structure. On this basis, a chopper modulator circuit is added to eliminate the flicker noise.
Gu Jun, Zhang Guohua, Zhu Xiaoyu
doaj   +1 more source

Digital plus analog output encoder [PDF]

, 1976
The disclosed encoder is adapted to produce both digital and analog output signals corresponding to the angular position of a rotary shaft, or the position of any other movable member.
Hafle, R. S.
core   +1 more source

A hydrogen beam to characterize the ASACUSA antihydrogen hyperfine spectrometer

, 2018
The antihydrogen programme of the ASACUSA collaboration at the antiproton decelerator of CERN focuses on Rabi-type measurements of the ground-state hyperfine splitting of antihydrogen for a test of the combined Charge-Parity-Time symmetry.
Amsler, C., Breuker, H., Cuendis, S. Arguedas, Diermaier, M., Evans, C., Fleck, M., Kolbinger, B., Lanz, A., Leali, M., Maeckel, V., Malbrunot, C., Mascagna, V., Massiczek, O., Matsuda, Y., Nagata, Y., Sauerzopf, C., Simon, M. C., Venturelli, L., Widmann, E., Wiesinger, M., Yamazaki, Y., Zmeskal, J.   +21 more
core   +1 more source

Pixelation‐Free, Monolithic Iontronic Pressure Sensors Enabling Large‐Area Simultaneous Pressure and Position Recognition via Machine Learning

Advanced Functional Materials, EarlyView.
A pixelation‐free, monolithic iontronic pressure sensor enables simultaneous pressure and position sensing over large areas. AC‐driven ion release generates spatially varying impedance pathways depending on the pressure. Machine learning algorithms effectively decouple overlapping pressure–position signals from the multichannel outputs, achieving high ...
Juhui Kim, Junseo Lee, Kwang‐Hun Choi, Seongil Im, Jae Hong Kim, Changsoon Choi, Junghwan Byun, Changhwan Shin, Ho Won Jang, Hyunsu Ju, Jung Ah Lim   +10 more
wiley   +1 more source

Fully Integrated Biopotential Acquisition Analog Front-End IC

Sensors, 2015
A biopotential acquisition analog front-end (AFE) integrated circuit (IC) is presented. The biopotential AFE includes a capacitively coupled chopper instrumentation amplifier (CCIA) to achieve low input referred noise (IRN) and to block unwanted DC ...
Haryong Song, Yunjong Park, Hyungseup Kim, Hyoungho Ko   +3 more
doaj   +1 more source