Abstract:
PURPOSE: A silica coating method for a gold nanorod surface is provided to stably coat silica on the gold nanorod surface without using a surface mediator by using a polymer having an amine group and a polymer having a mercapto group. CONSTITUTION: A manufacturing method of a gold nanorod coated with silica comprises the following steps: the gold nanorod is prepared: and a mixture of a polymer with an amine group and a polymer with a mercapto group is mixed with the gold nanorod to coat a silica layer on the gold nanorod surface. The polymer with the amine group is APDES(3-aminopropyldimethyl-ethoxysilane), and the polymer with the mercapto group is MPTMS(3-mercaptopropyl-trimethoxysilane). A manufacturing method of nanohybrid comprises the following steps: the gold nanorod coated with silica, and a silica nanoball are prepared; the amine group is formed on each surface of the gold nanorod coated with silica, and the silica nanoball; and the silica nanoball is combined to the surface of the gold nanorod coated with silica with a medium of NHS-PES-NHS(bis [2-(N-succinimidyl-succinylamino)-ethyl] polyethylene glycol).
Abstract:
PURPOSE: A method for manufacturing an organic-inorganic composite comprising bacteria and transition metal oxides is provided to reduce costs and time by simplifying a synthetic process, to enable mass production, and to obtain the organic-inorganic composite having various one-dimensional shapes. CONSTITUTION: A method for manufacturing an organic-inorganic composite comprising bacteria and transition metal oxides comprises the following steps: manufacturing a bacteria dispersion solution by controlling the concentration of the bacteria using deionized water after culturing the bacteria having ion charges; uniformly dispersing bacillus bacteria and a transition metal precursor by adding a transition metal precursor solution to the solution of the previous step and stirring the mixture at 20-30 °C for 0.5-2 hours; making the transition metal oxides attached uniformly to the surface of the bacteria by adding a solution, in which sodium borohydride(NaBH4) is dissolved in the deionized water, to the solution of the previous step and refluxing the mixture; obtaining a precipitate through centrifugal filtration of the refluxed solution; and manufacturing the organic-inorganic composite by drying the precipitate in vacuum state.
Abstract:
PURPOSE: A low-permittivity dielectric composition for low-temperature sintering, and a low permittivity ceramic dielectric body using thereof are provided to maintain the low permittivity by partially crystallizing glass using a nucleator. CONSTITUTION: A low-permittivity dielectric composition for low-temperature sintering contains the following; 44~65wt% of borosilicate glass frit including SiO_2, B_2O_3, Al_2O_3, alkaline earth oxide, and alkali metal oxide; 34~55wt% of filling material selected from the group consisting of Al_2O_3, SiO_2, MgAl_2O_4, MgSiO_3, and others; and 0.1~5wt% of nucleator selected from ZrO_2, TiO_2, La_2O_3, and WO_3. A low permittivity ceramic dielectric body including the low-permittivity dielectric composition is produced by low temperature sintering the low-permittivity dielectric composition.
Abstract:
PURPOSE: A transition metal oxide / multi-walled carbon nanotube nanocomposite and a method for manufacture the same are provided to enable mass production through a simple synthesis procedure by manufacturing 0 dimension -1 dimension nanocomposite using an urea composition method and a surfactant. CONSTITUTION: A method for manufacturing a transition metal oxide / multi-walled carbon nanotube nanocomposite comprises the following steps: a first step of dissolving a surfactant by putting the surfactant into deionized water; a second step of uniformly dispersing carbon nanotube and the surfactant by putting multi-walled carbon nanotube into a solution of the first step; a third step of adding chloridation metal and urea in the solution of the third step; a fourth step of heating the solution of the third step to 95 ~ 105 °C while stirring the solution; a fifth step of obtaining a precipitate by refluxing the solution of the fourth step; and a sixth step of manufacturing the nanocomposite by heat-treating the precipitate under air atmosphere or vacuum.
Abstract:
PURPOSE: A semiconductor nano optical sensor and a manufacturing method thereof with fast reaction are provided to secure high sensitivity and fast response by arranging semiconductor nano line. CONSTITUTION: A semiconductor nano optical sensor and a manufacturing method thereof with fast reaction includes a substrate(10), a metal catalytic layer(40), and a visible light band semiconductor nano line(50). An upper side of the substrate is composed of a substrate. Two electrodes are separated at specific interval between two substrates. A metal catalytic layer is formed on each electrode. A visible light band semiconductor nano line is formed from the metal catalytic layer on each electrode.
Abstract:
A method for manufacturing a needle type single crystalline AlN nano-rod is provided to enhance efficiency and to extend a lifetime of the needle type single crystalline AlN nano-rod. An aluminum metal, a hydrochloric gas, and an ammonia gas react under nitrogen gas atmosphere during 10-30 minutes at temperature of 680-720 °C. Aluminum metal powders are positioned in the inside of the quartz tube. The hydrochloric gas/nitrogen is introduced into the inside of the quartz tube. The ammonia gas/nitrogen is introduced into the inside of the quartz tube. In the introduced gas, a volume ratio of HCl/NH3 is 0.02 to 0.05 and a volume ratio of (HCl/N2)/(NH3/N2) is 0.6 to 0.8. The total flow rate of the introduced gas corresponds to a range of 600 to 1000 sccm. A single crystalline nano-rod(110) is formed by introducing the gas in the flow rate.
Abstract translation:提供一种制造针型单晶AlN纳米棒的方法,以提高针型单晶AlN纳米棒的效率并延长其寿命。 在氮气气氛下,在680-720℃的温度下,在10-30分钟内,将铝金属,盐酸气体和氨气反应。 铝金属粉末位于石英管的内部。 将盐酸气体/氮气引入石英管的内部。 将氨气/氮气引入石英管的内部。 在导入的气体中,HCl / NH 3的体积比为0.02〜0.05,(HCl / N 2)/(NH 3 / N 2)的体积比为0.6〜0.8。 引入气体的总流量对应于600〜1000sccm的范围。 通过以流量引入气体形成单晶纳米棒(110)。