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Applications Fields of Copper Nanoparticles

Copper nanoparticles in different particle size are purple or black. There are no other colors mixed. They have spherical shapes and no obvious agglomeration. Copper nanoparticles have large specific surface area and a number of surface active centers. It is the excellent metallurgical and petrochemical catalyst. The nano-copper powder can be used for the conductive paste. 100 nano copper powder (FCu) producing by this method and dubbed the copper electronic suspensions can be sintered only 0.6 microns thick electrode. It is applied in MLCC and makes the MLCC miniaturization. It optimizes microelectronics technology and replaces silver electric and precious metals such as electronic pulp expected. It greatly reduces the costs. Copper and its alloy nano-powders are used as catalyst with high efficiency, selectivity. It is often found in the process of carbon dioxide and hydrogen and methanol synthesis reaction.

Conductive Silver Powders as the raw material drug (weight ratio of 0.2 to 0.4%) can significantly reduced MDA content, and to improve the oxygen free radicals caused by lipid peroxidation damage, significantly increased SOD content, and enhance the body’s SOD levels, to regulate their characteristics of the functional activity of expression, so as to achieve slow the body’s aging process, intervention, and to postpone the structure of the tissues to the aging transformation has opened up new ways of life science field of anti-aging. Researchers as the preparation of anti-aging and cerebral ischemia, cerebral complications such as therapeutic drug efficacy, easy to take, safe. More experts and professors for the treatment of cancer has made miraculous after anti-so far as to explore its mechanism. Nano-copper powder can also be used to add new medicines in the treatment of osteoporosis, bone hyperplasia materials.
Copper nanoparticles are used as metal nano lubricant additives for metal powder exporter. Adding 0.1 to 0.6% to lubricants, greases, Mount Sassafras process, to set friction pair surface form a self-lubricating, self-laminating, significantly improve the Mount Sassafras vice, anti-wear anti-friction properties. Adding nano-copper powder metal friction self-lubricating oil in the repair agent to a variety of machinery and equipment, metal friction pairs wear part of the self-healing, energy saving. It will increase equipment life and maintenance cycle.

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Direct Laser Writing of Nanodiamond Films

Synthesis of diamond, a multi-functional material, has been a challenge due to very high activation energy for transforming graphite to diamond, and therefore, has been hindering it from being potentially exploited for novel applications. In this study, we explore a new approach, namely confined pulse laser deposition (CPLD), in which nanosecond laser ablation of graphite within a confinement layer simultaneously activates plasma and effectively confine it to create a favorable condition for nanodiamond formation from graphite.
Nano diamond powder is noteworthy that due to the local high dense confined plasma created by transparent confinement layer, nanodiamond has been formed at laser intensity as low as 3.7 GW/cm2, which corresponds to pressure of 4.4 GPa, much lower than the pressure needed to transform graphite to diamond traditionally. By manipulating the laser conditions, semi-transparent carbon films with good conductivity (several kΩ/Sq) were also obtained by this method. This technique provides a new channel, from confined plasma to solid, to deposit materials that normally need high temperature and high pressure. This technique has several important advantages to allow scalable processing, such as high speed, direct writing without catalyst, selective and flexible processing, low cost without expensive pico/femtosecond laser systems, high temperature/vacuum chambers.
The reaction of nanoscale diamond (ND) powder with an elemental fluorine/hydrogen mixture at temperatures varying from 150 to 470 °C resulted in the high degree of ND surface fluorination yielding a fluoro-nanodiamond with up to 8.6 at. % fluorine content. The fluoro-nanodiamond was used as a precursor for preparation of the series of functionalized nanodiamonds by subsequent reactions with alkyllithium reagents, diamines, and amino acids. The fluoro-nanodiamond and corresponding alkyl-, amino-, and amino acid-nanodiamond derivatives were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transformed infrared (FTIR) and X-ray photoelectron spectroscopy (XPS), and thermal gravimetry-mass spectrometry (TG-MS) measurements. In comparison with the pristine nanodiamond, all functionalized nanodiamonds show an improved solubility in polar organic solvents, e.g., alcohols and THF, and a reduced particle agglomeration.