Results 81 to 90 of about 6,489,351 (253)
Method and apparatus for determining time, direction, and composition of impacting space particles [PDF]
, 1990 A space particle collector for recording the time specific particles are captured, and its direction at the time of capture, utilizes an array of targets, each comprised of an MOS capacitor on a chip charged from an external source and discharged upon ...
Humes, Donald H. +5 more
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Strong optical force acting on a dipolar particle over a multilayer substrate
, 2015 Optical forces acting on nano-sized particles are typically too small to be useful for particle manipulation. We theoretically and numerically demonstrate a mechanism that can significantly enhance the optical force acting on a small particle through a ...
Chan, C. T., Wang, Shubo
core +2 more sources
Particle-resolved hyperspectral pyrometry of metal particles
Combustion and FlameWe present temperature histories of individual combusting metal particles using hyperspectral pyrometry. This method gives an increase in accuracy over traditionally used two- or three-color pyrometry, while maintaining temporal and spatial resolution. Temperatures can be determined between 1800 to K with a precision of typically 1%.
J. Hameete +6 more
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Focused plasmonic trapping of metallic particles
Nature Communications, 2013 Scattering forces in focused light beams push away metallic particles. Thus, trapping metallic particles with conventional optical tweezers, especially those of Mie particle size, is difficult. Here we investigate a mechanism by which metallic particles are attracted and trapped by plasmonic tweezers when surface plasmons are excited and focused by a ...
Min, Changjun +9 more
openaire +2 more sources
, 1997 A metal-insulator transition was induced by in-plane magnetic fields up to 27 T in homogeneously Sb-doped Si/SiGe superlattice structures. The localisation is not observed for perpendicular magnetic fields.
A. Prinz +57 more
core +1 more source
Independent particle descriptions of tunneling from a many-body perspective
, 2006 Currents across thin insulators are commonly taken as single electrons moving across classically forbidden regions; this independent particle picture is well-known to describe most tunneling phenomena.
Giorgos Fagas +3 more
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Journal of nanoparticle research, 2016 In this study, we elucidate the effect of different sonication techniques to efficiently prepare particle dispersions from selected non-functionalized NPs (Cu, Al, Mn, ZnO), and corresponding consequences on the particle dose, surface charge and release ...
S. Pradhan +4 more
semanticscholar +1 more source
The “invisible” metal particles in catalysis
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1997 Abstract An easy, reliable and straightforward method to determine the sizes of small metal particles in supported metal catalyst which are invisible for most techniques (chemisorption, XRD, HRTEM) is presented. The technique we consider more appropriate is EXAFS, because it detects metal-metal bonds even before metal atoms are forming particles. Due
Koningsberger, D.C. +2 more
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Pembuatan Alat Uji untuk Mengikat Partikel Logam yang Terkandung dalam Pelumas Akibat Gesekan Mesin
Semesta Teknika, 2015 One of the factors that can affect to the quality of lubricantion is metal particle content due to friction of engine parts. Metal particle in lubricanting oil could damage the engine parts, so it is neccessary to reduce the metal particle content which
Sukamta Sukamta +3 more
doaj
Methods for improved resolution of flow electrophoresis cells [PDF]
, 1974 First method involves remote adjusting of zeta potential. Second approach sandwiches two conducting metal plates between opposite cell walls and thin insulating layer.
Fogal, G. L., Mccreight, L. R.
core +1 more source