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A wearable based long-term lifelogging system is desirable for the purpose of reviewing and improving users' lifestyle habits. Energy harvesting (EH) is a promising means for realizing sustainable lifelogging. However, present EH…

Human-Computer Interaction · Computer Science 2019-03-21 Yoshinori Umetsu , Yugo Nakamura , Yutaka Arakawa , Manato Fujimoto , Hirohiko Suwa

Thermoelectric energy harvesters can have a much higher conversion efficiency by implementing quantum dots/wells between the high temperature region and the low temperature region. However they still suffer a limitation of the maximum…

Mesoscale and Nanoscale Physics · Physics 2015-06-30 Lijie Li

Energy harvesting is the fundamental activity in almost all forms of space exploration known to humans. So far, in most cases, it is not feasible to bring, along with probe, spacecraft or rover suitable supply of fuel to cover all mission's…

Space Physics · Physics 2017-11-13 Rafał Graczyk

This paper introduces a voltage multiplier (VM) circuit which can step up a minimum voltage of 150 mV (peak). The operation and characteristics of this converter circuit are described. The voltage multiplier circuit is also tested with…

Other Computer Science · Computer Science 2008-02-22 C. Saha , T. O'Donnell , J. Godsell , L. Carlioz , N. Wang , P. Mccloskey , S. Beeby , J. Tudor , Russel Torah

Giant strides in ultrashort laser pulse technology have enabled real-time observation of dynamical processes in complex molecular systems. Specifically, the discovery of oscillatory transients in the two-dimensional electronic spectra of…

Chemical Physics · Physics 2021-03-08 Akihito Ishizaki , Graham R. Fleming

The physics of vibrational kinetics in nitrogen-containing plasma produced by collisions with electrons is studied on the basis of recently derived cross sections and rate coefficients for the resonant vibrational-excitation by…

Chemical Physics · Physics 2013-04-17 V. Laporta , D. Bruno

Although entanglement is considered as an essential resource for quantum information processing, whether entanglement helps for energy conversion or output in the quantum regime is still lack of experimental witness. Here we report on an…

Quantum Physics · Physics 2024-04-25 J. -W. Zhang , B. Wang , W. -F. Yuan , J. -C. Li , J. -T. Bu , G. -Y. Ding , W. -Q. Ding , L. Chen , F. Zhou , M. Feng

One of the main limitations for the development and deployment of many Green Radio Frequency Identification (RFID) and Internet of Things (IoT) systems is the access to energy sources. In this aspect batteries are the main option to be used…

Signal Processing · Electrical Eng. & Systems 2024-11-01 Ivan Froiz-Miguez , Paula Fraga-Lamas , Tiago M. Fernandez-Carames

Molecular hydrogen normally has only weak, quadrupole transitions between its rovibrational states, but in a static electric field it acquires a dipole moment and a set of allowed transitions. Here we use published ab initio calculations of…

Astrophysics of Galaxies · Physics 2022-06-09 Mark A. Walker

The past few years have seen an increasing focus on energy harvesting issue, including power supply for portable electric devices. Utilize scavenging ambient energy from the environment could eliminate the need for batteries and increase…

Other Computer Science · Computer Science 2008-12-18 Tenghsien Lai , Changhan Huang , Chingfu Tsou

Instrumentation developments in electron energy-loss spectroscopy (EELS) in the scanning transmission electron microscope (STEM) one decade ago paved the way for combining milli-electronvolt energy resolution in spectroscopy with…

Mesoscale and Nanoscale Physics · Physics 2024-10-15 Benedikt Haas , Christoph T. Koch , Peter Rez

This paper investigates a multi-band harvesting (EH) schemes under cognitive radio interweave framework. All secondary users are considered as EH nodes that are allowed to harvest energy from multiple bands of Radio Frequency (RF) sources.…

Networking and Internet Architecture · Computer Science 2018-04-11 Ahmad Alsharoa , Nathan M Neihart , Sang W Kim , Ahmed E Kamal

This paper presents theoretical analysis of a MEMS electrostatic energy harvester configured as the Bennet's doubler. Steady-state operation of the doubler circuit can be approximated by a right-angled trapezoid Q-V cycle. A similarity…

Applied Physics · Physics 2017-09-27 Binh Duc Truong , Cuong Phu Le , Einar Halvorsen

A totally new energy harvesting architecture that exploits ambient electric-field (E-field) emitting from fluorescent light fixtures is presented. A copper plate, 50 x 50 cm in size, is placed in between the ambient field to extract energy…

Applied Physics · Physics 2017-05-03 O. Cetinkaya , Ozgur B. Akan

Electric field plays an important role in ferroelectric phase transition. There have been numerous phase field formulations attempting to account for electrostatic interactions subject to different boundary conditions. In this paper, we…

Computational Physics · Physics 2019-10-18 Qiang Du , Ruotai Li , Lei Zhang

Vibrational spectroscopy is a powerful technique to characterize the near-equilibrium dynamics of molecules in the gas- and the condensed-phase. This contribution summarizes efforts from computer-based methods to gain insight into the…

Chemical Physics · Physics 2022-04-15 Markus Meuwly

In the last decade, an explosive attention has been paid to piezoelectric harvesters due to their flexibility in design and increasing need to small-scale energy generation. As a result, various energy review papers have been presented by…

Materials Science · Physics 2021-10-20 Jafar Ghazanfarian , Mohammad Mostafa Mohammadi , Kenji Uchino

This paper describes the main challenges related to power converters in a scientific environment. It proposes some methods of EMC analysis, design, measurement, and EMC troubleshooting.

Accelerator Physics · Physics 2016-07-07 A. Charoy

A predicting model for soft Dielectric Elastomer Generators (DEGs) must consider a realistic model of the electromechanical behaviour of the elastomer filling, the variable capacitor and of the electrical circuit connecting all elements of…

Soft Condensed Matter · Physics 2016-09-20 Eliana Bortot , Ralf Denzer , Andreas Menzel , Massimiliano Gei

The recently suggested possibility that weak vibronic transitions can be excitonically enhanced in light-harvesting complexes is studied in detail. A vibronic exciton dimer model which includes ground state vibrations is investigated using…

Chemical Physics · Physics 2014-10-09 Jan Schulze , Magne Torbjörnsson , Oliver Kühn , Tõnu Pullerits