Results 11 to 20 of about 1,034,106 (265)
A High Performance Terahertz Photoconductive Antenna Array Detector With High Synthesis Efficiency
Frontiers in Physics, 2021 A 2 × 2 terahertz photoconductive antenna (PCA) array detector with high efficiency synthesis characteristic that improves the signal-to-noise ratio (SNR) of the detected signals has been reported in this paper.
Wei Shi +5 more
doaj +1 more source
Tokamak Equilibria with Reversed Current Density [PDF]
Physical Review Letters, 2003 Observations of nearly zero toroidal current in the central region of tokamaks (the "current hole") raises the question of the existence of toroidal equilibria with very low or reversed current in the core. The solutions of the Grad-Shafranov equilibrium equation with hollow toroidal current density profile including negative current density in the ...
Martynov, A. A. +2 more
openaire +3 more sources
Reversal of Thermoelectric Current in Tubular Nanowires [PDF]
Physical Review Letters, 2017 Main text and Supplemental Material (8 pages, 7 figures)
Erlingsson, Sigurdur I. +4 more
openaire +5 more sources
Simulated Impact of Shortened Strings in Commercial and Utility-Scale Photovoltaic Arrays
Energies, 2023 The deliberate removal of photovoltaic modules from a string can occur for various reasons encompassing maintenance, measurements, theft, or failure, reducing that string length relative to others when replacement modules are not available and there are ...
Ryan M. Smith +2 more
doaj +1 more source
Current reversals and synchronization in coupled ratchets [PDF]
Physical Review E, 2010 Current reversal is an intriguing phenomenon that has been central to recent experimental and theoretical investigations of transport based on ratchet mechanism. By considering a system of two interacting ratchets, we demonstrate how the coupling can be used to control the reversals.
Vincent, U. +4 more
openaire +5 more sources
Energy Conversion and Management: X, 2023 Uneven current density distribution in a proton exchange membrane fuel cell (PEMFC) can decrease the reactant and catalyst utilization, reduce the energy conversion efficiency of the whole fuel cell, and even lead to a shortened cell life.
Zhangda Liu +5 more
doaj +1 more source
Current microfluidic platforms for reverse engineering of cornea
Materials Today Bio, 2023 According to the World Health Organization, corneal blindness constitutes 5.1% of global blindness population. Surgical outcomes have been improved significantly in the treatment of corneal blindness. However, corneal transplantation is limited by global
Qinyu Li +7 more
doaj +1 more source
Reverse Causality in Global Current Accounts [PDF]
SSRN Electronic Journal, 2010 The paper discusses global imbalances under the aspect of an asymmetric world monetary system. It identifies the US and Germany as center countries with rising / high current account deficits (US) and surpluses (Germany). These are matched by current account surpluses of countries stabilizing their exchange rates against the dollar (dollar periphery ...
Schnabl, Gunther, Freitag, Stephan
openaire +3 more sources
Tuning formation process of void defects in microcolumn arrays via pulse reverse electrodeposition
Journal of Materials Research and Technology, 2023 The pulse reverse current electrodeposition process consists of two stages: the forward deposition and reverse dissolution. This study aims to understand the characteristics of forward deposition and reverse dissolution and to reveal their influences on ...
Yanzhuo Dong +5 more
doaj +1 more source
Feasible protection strategy for HVDC system by means of SFCL and passive resonance DC breaker
The Journal of Engineering, 2019 The key obstacle in implementing high-voltage direct current (HVDC) grid, which is considered as the future of power grid, is the absence of effective DC circuit breaker (DCCB). At present, HVDC grid could be based on half-bridge (HB) or full-bridge (FB)
Ho-Yun Lee +3 more
doaj +1 more source