نتایج جستجو برای: diamond nano
تعداد نتایج: 71087 فیلتر نتایج به سال:
Recent developments in grinding have opened up new avenues for finishingof hard and brittle materials with Nano-surface finish, high tolerance and accuracy.Grinding with super abrasive diamond wheels is an excellent way to produce ultraprecision surface finish. However, super abrasive diamond grits need higher bondingstrength while grinding, which metal-bonded grinding wheels ca...
Diamond-coated tools often fail due to coating graphitization and delamination caused by poor adhesion, large contact stress, thermochemical reactions. To address these issues, this research utilized a combination of micro-nano double-layer diamond coating, WS2 micro-textures. The inhibits the through transfer film mechanism, while micro-textures nanocrystalline store WS2, resulting in prolonge...
Related Articles Gold ion implantation induced high conductivity and enhanced electron field emission properties in ultrananocrystalline diamond films Appl. Phys. Lett. 102, 061604 (2013) Direct observation of enhanced emission sites in nitrogen implanted hybrid structured ultrananocrystalline diamond films J. Appl. Phys. 113, 054311 (2013) Evaluation of field emission parameters in a copper na...
Diamond, with its exceptionally high optical nuclear potential and low absorption cross-section, is a unique material for a series of applications in VCN (very cold neutron) physics and techniques. In particular, powder of diamond nanoparticles provides the best reflector for neutrons in the complete VCN energy range. It allowed also the first observation of quasi-specular reflection of cold ne...
In recent years, nanomachining has attracted increasing attention in advanced manufacturing science and technologies as a value-added processes to control material structures, components, devices, and nanoscale systems. To make sub-micro patterns on these products, micro/nanoscale single-crystal diamond cutting tools are essential. Popular non-contact methods for the macro/micro processing of d...
The development of high performance nano-electron-emitter arrays with well reliability still proves challenging. Here, we report a featured integrated nano-electron-emitter. The vertically aligned nano-emitter consists of two segments. The top segment is an intrinsically lightly n-type doped ZnO nano-tip, while the bottom segment is a heavily p-type doped Si nano-pillar (denoted as p-Si/ZnO nan...
Nano-plasticity of thin single-wall carbon nanotubes under uniaxial compression is investigated through generalized tight-binding molecular dynamics (GTBMD) and ab-initio electronic structure methods. A novel mechanism of nano-plasticity of carbon nanotubes under uniaxial compression is observed in which bonding geometry collapses from a graphitic (sp 2) to a localized diamond like (sp 3) recon...
A novel quantitative nano+micro-tribometer with integrated SPM and optical microscope imaging has been developed to characterize numerous physical and mechanical properties of liquid and solid thin films and coatings, with in-situ monitoring their changes during micro and nano indentation, scratching, reciprocating, rotating and other tribology tests. Both the materials properties and surface t...
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