Results 101 to 110 of about 123,487 (278)
Low-voltage DDA-based chopper-stabilized amplifier for biosignal processing
, 2023 This dissertation presents a low-voltage chopper-stabilized Differential Difference Amplifier (DDA) instrumentation amplifier. The proposed DDA incorporates feed-forward frequency compensation and a Type II compensator to achieve good bandwidth and phase
Fan, Xinlan
core
An Ultra‐Low‐Power Biopotential Acquisition Analog Front‐End Chip for Wearable Devices
International Journal of Circuit Theory and Applications, EarlyView.A 0.8‐V, 1.2‐μW biopotential AFE combines a chopper‐stabilized CCIA with dual‐time‐scale EDO management. The slow DSL preserves > 1 GΩ input impedance, whereas an event‐triggered fast‐recovery path shortens return to the linear range after abrupt electrode‐offset disturbances. ABSTRACT A 0.8‐V, 1.2‐μW biopotential analog front‐end (AFE) IC is presented
Zhang Xin +4 more
wiley +1 more source
A 5.5 μW 42nV/√Hz Chopper stabilized Amplifier for Biomedical Application with Input Impedance Enhancement [PDF]
The continuous real-time monitoring of diverse physical parameters using biosignals like ECG and EEG requires the biomedical sensors. Such sensor consists of analog frontend unit for which low noise and low power Operational transconductance amplifier ...
Naik, Amisha, Adesara, Ankit Mukeshbhai
core +1 more source
Optical Chopper for LOngitudinal-Detected (LOD) EPR [PDF]
Dynamic nuclear polarization (DNP) is a nuclear magnetic resonance (NMR) hyperpolarization technique that mediates polarization transfer from unpaired electrons to nuclear spins. DNP performance can vary significantly depending on the types of polarizing
Utsab, Banerjee +4 more
core +1 more source
EcoEnergy, EarlyView.This review highlights emerging integrated energy systems based on perovskite photovoltaics, including PSC–thermoelectric, photovoltaic–electrochemical, self‐charging, and building‐integrated architectures. By coupling multiple energy conversion and storage pathways, these multifunctional platforms enable enhanced solar utilization, improved stability,
Yihuai Huang +10 more
wiley +1 more source
EcoEnergy, EarlyView.Photocatalytic, electrocatalytic, and photoelectrocatalytic systems exhibit a clear synergistic integration logic in closed‐loop alcohol refining—concurrently driving hydrogen evolution and selective alcohol oxidation to enable the directed conversion of alcohols into high‐value chemicals.
Wei Ren +7 more
wiley +1 more source
Cascomp BJT Amplifier vs. traditional configurations [PDF]
, 2012 All transistor circuits introduce distortion. In Radio Frequency (RF) circuits, the third-order distortion components are the most important. The quest for more linear circuits has become more important with complex-modulation as used in modern cellular ...
Scott, Jonathan B. +2 more
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Enhancing the Ferroelectricity of MAPbI3 via Hydroxyl Groups to Boost Photocatalytic Performance
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.The hydroxyl groups in (EOA)2PbBr4 enable a rearrangement of the polar MA+ ions in MAPbI3, which enhances the Ps‐electric field and promotes the separation of photogenerated carriers. Consequently, the (EOA)2PbBr4/MAPbI3 composite exhibits the enhanced CO production yield in photocatalytic CO2 reduction reactions.
Zhaohui Fang +6 more
wiley +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Sequential ultrafast excitation is shown to increase the relative kinetic weighting of biexciton‐mediated decay in CsPbBr3 nanocrystals without increasing the total excitation fluence. By temporally structuring excitation within the exciton lifetime, the early‐time fast decay contribution becomes more pronounced while the fitted fast decay constants ...
Lijie Wang +8 more
wiley +1 more source
The effects of sodium–glucose cotransporter 2 inhibitors on the ‘forgotten’ right ventricle
ESC Heart Failure, Volume 12, Issue 2, Page 1045-1058, April 2025.Abstract With the progress in diagnosis, treatment and imaging techniques, there is a growing recognition that impaired right ventricular (RV) function profoundly affects the prognosis of patients with heart failure (HF), irrespective of their left ventricular ejection fraction (LVEF).
Liangzhen Qu, Xueting Duan, Han Chen
wiley +1 more source