Chemoplasmonic Oscillation: A Chemomechanical Energy Transducer

2019 ◽  
Vol 11 (45) ◽  
pp. 42580-42585 ◽  
Author(s):  
Fangfang Deng ◽  
Jiajin Feng ◽  
Tao Ding
Keyword(s):  
Energy Transducer

A CMOS active voltage doubler for a low voltage $100-1000\ \mu \mathrm{W}$ range magnetoelectric energy transducer

2021 ◽  
Author(s):  
Josep Maria Sanchez-Chiva ◽  
Dimitri Galayko ◽  
Amine Rhouni
Keyword(s):  
Low Voltage ◽  
Voltage Doubler ◽  
Energy Transducer

scholarly journals Buck Converter for Low-Power PV Modules: A Comparative Study

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 1050
Author(s):  
Ferran Reverter ◽  
Manel Gasulla
Keyword(s):  
Low Power ◽  
Buck Converter ◽  
Operating Voltage ◽  
Storage Unit ◽  
Maximum Power Point ◽  
Pv Module ◽  
Optimal Value ◽  
Pv Modules ◽  
Energy Transducer ◽  
Power Point

Autonomous sensors that harvest energy from the environment usually employ a dc/dc converter to regulate the operating voltage of the energy transducer around its maximum power point (MPP). In this context, this work evaluates the efficiency of a buck converter when regulating the operating point of two low-power photovoltaic (PV) modules subjected to different irradiance levels. The buck converter operates in burst mode (BM) and is able to transfer the energy from the PV module to a storage unit through an optimal value of the inductor current. Experimental results show that an irradiance increase can cause either an increase or a decrease of the converter efficiency. This is because the higher the irradiance, the higher both the MPP voltage and current of the PV module, which involve opposite effects in terms of the converter efficiency.

Chapter 8 Water as a Photoacceptor, Energy Transducer, and Rechargeable Electrolytic Bio-battery in Photobiomodulation

2016 ◽  
pp. 119-140 ◽  
Author(s):  
Luis Santana-Blank ◽  
Elizabeth Rodríguez-Santana ◽  
Jesús A. Santana-Rodríguez ◽  
Karin E. Santana-Rodríguez ◽  
Heberto Reyes-Barrios
Keyword(s):  
Energy Transducer

Dynamics Analysis of Energy Absorbing Device Based on Damped Dynamics Vibration Absorber

2015 ◽  
Vol 764-765 ◽  
pp. 254-258 ◽  
Author(s):  
Zhong Qiang Zheng ◽  
Peng Huang ◽  
Tao Yao ◽  
Zong Yu Chang
Keyword(s):  
Large Scale ◽  
Damping Ratio ◽  
Excitation Frequency ◽  
Tall Buildings ◽  
Analytical Form ◽  
Energy Absorber ◽  
In Series ◽  
Energy Transducer ◽  
Electrical Damping ◽  
Energy Absorbing

Nowadays, absorbing energy from vibration is one of the most promising technologies. In general, the vibrations may be very large, such as the vibrations of tall buildings, large flexible bridges, and ocean platform and so on in some environmental loading. With the global concern on energy and environmental issues, energy absorbing from large-scale vibrations for structural health monitoring purposes is more attractive and becomes a research frontier. A type of damped dynamics vibration energy absorber, where two masses are connected in series with the energy transducer and spring, is built and analyzed in this paper. The relationships among electrical damping ratio, excitation frequency ratio and dimensionless power are analyzed in frequency domain. The optimal parameters for maximizing the power output are discussed in analytical form while taking the parasitic mechanical damping of the system into account. In addition, the numerical simulations in time domain are calculated. The results indicate that when the system is excited by the larger peak of local optimal excitation frequency, more power can be obtained. It is helpful for design of energy absorber device.

Warburg's Atmungsferment: A molecular energy transducer

2004 ◽  
Vol 2004 (Fall) ◽  
Author(s):  
Marten Wikstrom
Keyword(s):  
Energy Transducer

scholarly journals The Search for a Biological Energy Transducer

1989 ◽  
Vol 29 (2) ◽  
pp. 593-603
Author(s):  
MANUEL F. MORALES
Keyword(s):  
Energy Transducer

An Ultra Low Voltage Resonant Converter for Thermoelectric Energy Harvesting

2013 ◽  
Vol 772 ◽  
pp. 731-734
Author(s):  
Shi Zhong Guo ◽  
Kai Xie ◽  
Ying Hao Ye ◽  
Xiao Ping Li
Keyword(s):  
Energy Harvesting ◽  
Low Voltage ◽  
Power Converter ◽  
Resonant Converter ◽  
Transfer Energy ◽  
Thermoelectric Energy ◽  
Thermoelectric Energy Harvesting ◽  
Energy Transducer ◽  
Energy Harvesting System ◽  
Energy Buffer

This paper presents a ultra low voltage resonant converter for thermoelectric energy harvesting.A key challenge in designing energy harvesting system is that thermoelectric generators output a very low voltage (-0.3V~0.3V). Therefore, a power converter is used to boost the output voltage of the energy transducer and transfer energy into an energy buffer for storage. The converter operates from input voltages ranging from-500mV to-60mV and 60mV to 500mV while supplying a 4.2 V DC output. The converter consumes 88μW of quiescent power, delivers up to 1.6 (1.8) mW of output power, and is 65(67)% efficient for a-100mV and 100mV input, respectively.

scholarly journals Function, Regulation, and Transcriptional Organization of the Hemin Utilization Locus of Bartonella quintana

2008 ◽  
Vol 77 (1) ◽  
pp. 307-316 ◽  
Author(s):  
Nermi L. Parrow ◽  
Jasmin Abbott ◽  
Amanda R. Lockwood ◽  
James M. Battisti ◽  
Michael F. Minnick
Keyword(s):  
Reverse Transcriptase ◽  
Response Regulator ◽  
Consensus Sequence ◽  
Promoter Regions ◽  
Bartonella Quintana ◽  
E Coli ◽  
Reverse Transcriptase Pcr ◽  
Polycistronic Mrna ◽  
Bacillary Angiomatosis ◽  
Energy Transducer

ABSTRACT Bartonella quintana is a gram-negative agent of trench fever, chronic bacteremia, endocarditis, and bacillary angiomatosis in humans. B. quintana has the highest known hemin requirement among bacteria, but the mechanisms of hemin acquisition are poorly defined. Genomic analyses revealed a potential locus dedicated to hemin utilization (hut) encoding a putative hemin receptor, HutA; a TonB-like energy transducer; an ABC transport system comprised of three proteins, HutB, HutC, and HmuV; and a hemin degradation/storage enzyme, HemS. Complementation analyses with Escherichia coli hemA show that HutA functions as a hemin receptor, and complementation analyses with E. coli hemA tonB indicate that HutA is TonB dependent. Quantitative reverse transcriptase PCR analyses show that hut locus transcription is subject to hemin-responsive regulation, which is mediated primarily by the iron response regulator (Irr). Irr functions as a transcriptional repressor of the hut locus at all hemin concentrations tested. Overexpression of the ferric uptake regulator (fur) represses transcription of tonB in the presence of excess hemin, whereas overexpression of the rhizobial iron regulator (rirA) has no effect on hut locus transcription. Reverse transcriptase PCR analyses show that hutA and tonB are divergently transcribed and that the remaining hut genes are expressed as a polycistronic mRNA. Examination of the promoter regions of hutA, tonB, and hemS reveals consensus sequence promoters that encompass an H-box element previously shown to interact with B. quintana Irr.

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