Results 51 to 60 of about 864,788 (299)

Performance enhancement of nanogenerator achieved in branch-heterostructure piezoelectric ceramic fiber toward electrical transmission power line monitoring

Journal of Advanced Ceramics
A flexible composite-based piezoelectric nanogenerator (PENG) with low cost, stable properties, and sensitivity to mechanical deformation is highly suitable for constructing self-powered sensing layers for distributed electrical transmission power lines.
Haowei Lu, Zhenghua Hu, Xin Wang, Gaoru Chen, Xiaogan Zheng, Jintao Xia, Mingju Huang, Wenlong Yang, Junhui Liu, Benlin Hu   +9 more
doaj   +1 more source

Dual-band rectenna system for biomedical wireless applications

Measurement: Sensors, 2022
- This paper proposes a dual-band RF energy harvester to power biomedical wireless devices for various health applications. Biomedical devices may be implantable medical devices or wearable devices.
Shailendra Singh Ojha, P.K. Singhal, Vandana Vikas Thakare   +2 more
doaj   +1 more source

A High Efficiency Architecture for Cascaded Raman Fiber Lasers

, 2013
We demonstrate a new high efficiency architecture for cascaded Raman fiber lasers based on a single pass cascaded amplifier configuration. Conversion is seeded at all intermediate Stokes wavelengths using a multi-wavelength seed source.
Headley, Clifford E., Jakobsen, Dan, Nichsolson, Jeffrey W., Palsdottir, Bera, Supradeepa, V. R., Yan, Man F.   +5 more
core   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

A high‐efficiency power management unit with wide dynamic range for RF energy harvesting system

IET Power Electronics, 2023
A high‐efficiency power management unit (PMU) with wide dynamic range for radio frequency (RF) energy harvesting system is proposed in this paper. A digital zero current switching (ZCS) and a digital maximum power point tracking (MPPT) circuits are ...
Zushuai Xie, Wenxu Zhang, Quancai Zhou, Yanyan Wang, Jianhui Wu, Jingjing Gou, Lu Liu, Zixuan Wang, Zhikuang Cai   +8 more
doaj   +1 more source

Influence of Charge Carrier Mobility on the Performance of Organic Solar Cells

, 2008
The power conversion efficiency of organic solar cells based on donor--acceptor blends is governed by an interplay of polaron pair dissociation and bimolecular polaron recombination.
Braun, Cheyns, Deibel, Gummel, Juska, Koster, Langevin, Lemons, Mandoc, Scharfetter   +9 more
core   +1 more source

Efficient wavelength conversion and net parametric gain via four wave mixing in a high index doped silica waveguide [PDF]

, 2010
We demonstrate sub-picosecond wavelength conversion in the C-band via four wave mixing in a 45cm long high index doped silica spiral waveguide. We achieve an on/off conversion efficiency (signal to idler) of + 16.5dB as well as a parametric gain of ...
Alessia Pasquazi, Boggio, Brent E. Little, Cerqueira Sodre, Ciaramella, David J. Moss, Duchesne, Espinola, Ferrera, Ferrera, Foster, François Légaré, Fukuda, Jalali, José Azaña, Lamont, Lee, Little, McKinstrie, Pasquazi, Radic, Razzari, Roberto Morandotti, Rochette, Rong, Sai T. Chu, Salem, Ta’eed, Ta’eed, Ta’eed, Ta’eed, Yongwoo Park   +31 more
core   +2 more sources

Conserved structural motifs in PAS, LOV, and CRY proteins regulate circadian rhythms and are therapeutic targets

FEBS Letters, EarlyView.
Cryptochrome and PAS/LOV proteins play intricate roles in circadian clocks where they act as both sensors and mediators of protein–protein interactions. Their ubiquitous presence in signaling networks has positioned them as targets for small‐molecule therapeutics. This review provides a structural introduction to these protein families.
Eric D. Brinckman, Anna E. Lester, Brian D. Zoltowski   +2 more
wiley   +1 more source

Photo-Generation of Tunable Microwave Carriers at 2 µm Wavelengths Using Double Sideband with Carrier Suppression Modulation

Applied Sciences, 2022
At 2 µm wavelengths (149.9 THz), hollow-core photonics band gap fibers have higher light power damage thresholds, stable polarization states, and lower losses of 0.1 dB/km.
Di Ji, Zhitao Hu, Nan Ye, Fufei Pang, Yingxiong Song   +4 more
doaj   +1 more source

Thermoelectric efficiency at maximum power in low-dimensional systems

, 2010
Low-dimensional electronic systems in thermoelectrics have the potential to achieve high thermal-to-electric energy conversion efficiency. A key measure of performance is the efficiency when the device is operated under maximum power conditions.
Linke, Heiner, Nakpathomkun, Natthapon, Xu, Hongqi Q.   +2 more
core   +1 more source