A new method for the synthesis of nanodiamond particles in Russia

Abstract Researchers at the University of Technology in Tomsk, Russia, used a short pulse wave of carbon ions to act on silicon to synthesize nano-diamond particles and carbon particles on the surface of silicon. For the first time in the world, the method of synthesizing nano-diamond particles in the surface of other substances was successfully studied. The study of this method into...
Researchers at the Technical University of Tomsk, Russia, used a short pulse wave of carbon ions to act on silicon to synthesize nanodiamond particles and carbon particles on the silicon surface. For the first time in the world, a method for synthesizing nanodiamond particles in the surface of other materials was successfully studied. The success of this method has been able to change certain properties of metal products and semiconductors, to make certain materials more robust, to improve their wear resistance and bond strength to diamond coatings.

This method has a good application prospect in the semiconductor lighting industry and even the entire semiconductor industry, but further experimental data is needed to provide support. The university's scholars believe that because diamond nanoparticles are produced under high temperature and high pressure conditions, carbon ions are always associated. Therefore, this synthesis method can be realized not only by silicon but also inside other substances. As early as three years ago, the university began to engage in carbon ion pulse testing, and obtained carbon implant patents in 2012, which was included in the "Russian 100 outstanding invention patents" promulgated by the Russian Intellectual Property Office.

Silicon Lens

The refractive index of the monocrystalline silicon material is about 3.42, and the reflectivity of the silicon lens after polishing is about 30% in the air environment. Our common silicon lens and silicon window can be coated on the surface (Antireflection Coating), which can reduce the reflectivity to less than 1.5% between 3 to 5 um.

Some silicon elements, especially the silicon protected windows, are exposed to dust, acid, salt and so on in the harsh environment. The conventional multilayer antireflection coating will be damaged and affect the normal work of the equipment. At this time, we need to make DLC coating on the surface of the silicon lens.

Diamond-Like Carbon (DLC) Coated Silicon Windows are engineered for 3 to 5µm, making them ideal for infrared defense applications such as thermal imaging.
Diamond-Like Carbon (DLC) Coated Silicon Windows provide anti-reflection coating on one surface and a specially designed DLC coating on the other surface, making these windows highly durable and ideal for harsh environments.


SI curve

Si material properties


Silicon lens specifications:
Standard precision High-precision
Dimension Tolerance φ5-250mm+0/-0.2 φ3-350mm+0/-0.2
Thickness Tolerance 1-50mm+/-0.1 1-50mm
Centration 3 arc minute 1 arc minute
Surface Quality 60/40 20/10
Power(fringe@633nm) N<λ/2@633nm(in 25mm) N<λ/10@633nm(in 25mm)
Clear Aperture >90% >95%
Chamfer Protected <0.5mmx45deg Protected <0.5mmx45deg

Silicon Lens,Silicon Optical Lens,Infrared Si Lens,Silicon Plano-Convex Lens

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