摘要:
A slurry includes a plurality of particles and at least one selective adsorption additive. The particles are preferably composite particles including a core surrounded by a shell provided by the selective adsorption additive. The slurry can be used to polish a structure including silicon dioxide or a low K dielectric film and a silicon nitride containing film, such as to form a shallow trench isolation (STI) structure or a metal-dielectric structure. The silicon nitride containing film surface substantially adsorbs the selective adsorption additive, whereas the silicon dioxide or low K dielectric film shows non-substantial adsorption characteristics to the adsorption additive. In another embodiment of the invention, silicon dioxide or low K dielectric film shows non-substantial adsorption of the selective adsorption additive at a pressure above a predetermined first pressure, and substantial adsorption of the selective adsorption additive for pressures below a predetermined second pressure, where the first pressure is greater than the second pressure.
摘要:
A process for generating single crystalline nano-crystals is described. The nano-crystals are formed on a substrate containing nano-sectors having functional groups which promote nucleation of crystals and inert sectors which do not. The particle size of the crystals is controlled by the size of the nano-sectors and the crystals become reversibly attached to the surface of the nano-sectors during crystallization. In addition, the substrate containing the single crystalline nano-crystals and the single crystalline nano-crystals formed by the process are also claimed.
摘要:
A photonic crystal material and a method for producing such a material according to a predetermined, two-dimensional or three-dimensional porous template. The method include the steps of: (A) preparing a porous template, wherein the preparation step includes the sub-steps of (i) dissolving a first material in a volatile solvent to form an evaporative solution, (ii) depositing a thin film of the solution onto a substrate, and (iii) exposing the solution film to a moisture environment while allowing the solvent in the solution to evaporate for forming the template that is constituted of an ordered array of micrometer- or nanometer-scaled air bubbles, which are surrounded with walls and are dispersed in a film of the first material; (B) filling the air bubbles with a second material; (C) at least partially removing the walls to create a plurality of voids; (D) refilling the voids with a third material; and (E) removing the second material from the air bubbles to obtain the photonic crystal material in the form of an array of air bubbles with walls made of the third material.
摘要:
A homogeneous crystal having excellent stability which is suitable for the industrial-scale production of 5-null(2,4-dioxothiazolidin-5-yl)methylnull-2-methoxy-N-nullnull4-(trifluoromethyl)phenylnullmethylnullbenzamide (KRP-297). The novel crystal of KRP-297 is produced through recrystallization from an alcohol solvent. It is characterized by having diffraction angles (2null) at at least 9.7null, 15.0null, and 22.5null in X-ray powder diffractometry.
摘要:
A microfluidic method is provided that comprises: delivering a first fluid to a first lumen of a microfluidic device and a second, different fluid to a second lumen of the microfluidic device, the first and second lumens sharing a common wall which allows for diffusion between the lumens over at least a portion of the length of the lumens; and having the first and second fluids diffuse between the first and second lumens.
摘要:
A microfluidic method is provided that comprises: delivering first and second fluids to a lumen of a microfluidic device such that the first and second fluids flow adjacent to each other within the lumen without mixing except for diffusion at an interface between the first and second fluids, wherein the first fluid is different than the second fluid.
摘要:
The present invention provides novel devices and method for kinetically controlling vapor diffusion in crystal growth. The devices comprise discrete diffusion pathways which control the kinetics of vapor diffusion between the crystal growth solution and the reservoir. The devices can comprise a channel which can be of varying lengths or geometries. The channel can either be static or controlled actively or dynamically. Alternatively, the diffusion pathways are provided by the material of the device itself. The device comprises porous and/or water absorbing materials through which the vapor can diffuse. The vapor diffusion rate can be controlled by the thickness or material of the device, or a combination of both.
摘要:
A diamond layer of single crystal CVD diamond which is coloured, preferably which has a fancy colour, and which has a thickness of greater than 1 mm.
摘要:
A method of producing a large area plate of single crystal diamond from CVD diamond grown on a substrate substantially free of surface defects by chemical vapour deposition (CVD). The homoepitaxial CVD grown diamond and the substrate are severed transverse to the surface of the substrate on which diamond growth took place to produce the large area plate of single crystal CVD diamond.
摘要:
A method of forming at least one single crystal of a Group III metal nitride. The method includes the steps of: providing a flux material and a source material comprising at least one Group III metal selected from the group consisting of aluminum, indium, and gallium, to a reaction vessel; sealing the reaction vessel; heating the reaction vessel to a predetermined temperature and applying a predetermined pressure to the vessel. The pressure is sufficient to suppress decomposition of the Group III metal nitride at the temperature. Group III metal nitrides, as well as electronic devices having a Group III metal nitride substrate formed by the method are also disclosed.