Results 131 to 140 of about 45,213 (186)
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Contact Electrification between Identical Materials
Angewandte Chemie, 2010Pieces of identical, atomically flat insulators separate a charge Q when brought into contact and then parted. Repeated contacts cause the magnitudes of the separated charges to increase monotonically. A theoretical model is presented that explains these phenomena by the inherent, molecular-scale fluctuations in the composition of the seemingly ...
Apodaca, Mario M. +4 more
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Contact Electrification Field-Effect Transistor
ACS Nano, 2014Utilizing the coupled metal oxide semiconductor field-effect transistor and triboelectric nanogenerator, we demonstrate an external force triggered/controlled contact electrification field-effect transistor (CE-FET), in which an electrostatic potential across the gate and source is created by a vertical contact electrification between the gate material
Chi, Zhang +4 more
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Contact electrification using force microscopy
Physical Review Letters, 1989One of the oldest unresolved problems in physics is the mechanism of charge exchange between contacting surfaces when at least one of them is insulating. We describe a new technique, using force microscopy, for studying this problem with greater lateral resolution than has been previously possible. The force microscope is shown to have 0.2 \ensuremath{\
, Terris, , Stern, , Rugar, , Mamin
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Contact electrification of C60
Zeitschrift für Physik D Atoms, Molecules and Clusters, 1993We have used gold-, tungsten-, and copper plates to contact repeatedly a C60 powder sample. We observed the flow of electrons to the sample leading to negative charge accumulation. In repeated-contact experiments, we find charge saturation after 15 contacts for gold and copper contact partners. This is typical for the behavior of a semiconductor.
B. A. Kwetkus, K. Sattler
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From contact electrification to triboelectric nanogenerators
Reports on Progress in Physics, 2021Abstract Although the contact electrification (CE) (or usually called ‘triboelectrification’) effect has been known for over 2600 years, its scientific mechanism still remains debated after decades. Interest in studying CE has been recently revisited due to the invention of triboelectric nanogenerators (TENGs ...
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Contact electrification of polymers
Journal of Physics D: Applied Physics, 1976Measurements of the charge produced by rolling or sliding contact between a metal or polymer sphere and a dielectric sheet have been carried out under controlled conditions. The dependence of charge on air pressure was studied. Charge decay and mobilities were estimated. The metal work-function had no effect on charge transfer.
R Elsdon, F R G Mitchell
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Contact electrification of polyamides
Journal of Electrostatics, 1991Abstract Charge transfer to nylon 6.6 and other polyamides is a characteristic of the material, and to a large extent independent of source and fabrication history. A variety of polyamides with a range of amide group concentrations all charge strongly positive to much the same extent, but polyolefins (equivalent to polyamides with zero concentration ...
G.W. Follows, J. Lowell, M.P.W. Wilson
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Probing Contact Electrification: A Cohesively Sticky Problem
ACS Applied Materials & Interfaces, 2021Contact electrification and the triboelectric effect are complex processes for mechanical-to-electrical energy conversion, particularly for highly deformable polymers. While generating relatively low power density, contact electrification can occur at the contact-separation interface between nearly any two polymer surfaces.
Peter C. Sherrell +9 more
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Is Water Necessary for Contact Electrification?
Angewandte Chemie International Edition, 2011Was Thales right about water? Contrary to previous reports, contact charging can occur in the absence of water. At the same time, water helps stabilize the developed charges. Water???free conditions are realized by performing all experiments and charge measurements under oil???immersion.
Baytekin, H. Tarik +3 more
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Contact Electrification at the Liquid–Solid Interface
Chemical Reviews, 2021Interfaces between a liquid and a solid (L-S) are the most important surface science in chemistry, catalysis, energy, and even biology. Formation of an electric double layer (EDL) at the L-S interface has been attributed due to the adsorption of a layer of ions at the solid surface, which causes the ions in the liquid to redistribute.
Shiquan Lin +2 more
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