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    • 2. 发明授权
    • Preparation method of polymeric rod and gradient-index rod lens using
free radical bulk polymerization with temperature gradient
    • 使用具有温度梯度的自由基本体聚合的聚合物棒和梯度指数棒状透镜的制备方法
    • US5863993A
    • 1999-01-26
    • US708545
    • 1996-09-05
    • Sang-Don Jung
    • Sang-Don Jung
    • B29C33/02B29C39/22B29C39/26B29C39/38B29L11/00C08F26/06G02B3/00
    • G02B3/0087B29C35/02B29D11/00355B29D11/00442B29C35/0266
    • A preparation method of polymerid rod using free radical bulk polymerization with temperature gradient, comprising the steps of, charging a mixture of monomer which can be subjected to a radical polymerization, polymerization initiator and cross linking agent into a reaction container of tube shape having a constant inner diameter and performing radical polymerization of the monomer, by passing the said reaction container in a constant dipping speed through a zone downwardly from upper part to lower part of the said zone, wherein the upper part of the zone is maintained at a relatively low temperature (TL) and the lower part of the zone is maintained at a relatively high temperature (TH) than that of the said upper part so that the medium part located between the upper part and lower part has a temperature gradient of (TH-TL)/L (wherein, L is defined as a vertical distance of the temperature-gradient zone). By the present method, it is possible to decrease a transmission loss of the obtained polymeric rod due to scattering. The obtained polymeric rod by the present method having nearly perfect outer shape can be used in preparing a polymeric gradient-index rod lens which is used as an optical component.
    • 使用具有温度梯度的自由基本体聚合的聚合物棒的制备方法,包括以下步骤:将可进行自由基聚合的单体的混合物,聚合引发剂和交联剂加入到具有常数的管状反应容器中 内径并进行单体的自由基聚合,通过使所述反应容器以恒定的浸渍速度通过从所述区域的上部到下部的区域向下的区域,其中该区域的上部保持在相对低的温度 (TL),并且该区域的下部保持在比所述上部的相对高的温度(TH),使得位于上部和下部之间的介质部分具有(TH-TL)的温度梯度, / L(其中,L被定义为温度梯度区的垂直距离)。 通过本方法,可以降低由于散射而导致的聚合物棒的传输损失。 通过本方法获得的具有几乎完美外形的聚合物棒可以用于制备用作光学部件的聚合物梯度折射率棒状透镜。
    • 4. 发明授权
    • Manufacturing method of a polymer GRIN lens using sulfonation
    • 使用磺化的聚合物GRIN透镜的制造方法
    • US5567363A
    • 1996-10-22
    • US352044
    • 1994-11-30
    • Sang-Don JungSeok-Ho Song
    • Sang-Don JungSeok-Ho Song
    • G02B1/04B29D11/00C08F2/18C08F8/36C08F12/00C08F212/00C08F212/02C08F212/36C08J7/00G02B3/00
    • B29D11/00355C08F8/36G02B3/0087
    • The present invention relates to a manufacturing method of a polymer GRIN lens which is used for focusing light in connections for example between two or more optical fibers and between an optical fiber and a light source in the optical communication field. The manufacturing method of a GRIN lens according to the present invention utilizes a characteristic of polystyrene that its refractive-index is decreased by sulfonation. The method includes polymerizing a sphere or rod made of a directional monomer that is capable of sulfonating like a styrene, together with a cross-linking agent, and a polymerization initiator; swelling the polymerized cross-linked polymer by using a predetermined solvent; and sulfonating the swollen cross-linked polymer using a sulfuric acid. Accordingly, the present method can be easily controlled to obtain the desired refractive-index distribution since the refractive-index distribution is determined by the diffusion of the sulfuric acid as a sulfonation.
    • 本发明涉及一种聚合物GRIN透镜的制造方法,其用于在光通信领域中将光聚焦在例如两根或多根光纤之间以及光纤与光源之间的连接中。 根据本发明的GRIN透镜的制造方法利用聚苯乙烯的特性,其折射率通过磺化而降低。 该方法包括使能够与苯乙烯一起磺化的定向单体制成的球或聚合物与交联剂和聚合引发剂一起聚合; 通过使用预定溶剂使聚合的交联聚合物溶胀; 并用硫酸磺化溶胀的交联聚合物。 因此,由于通过硫酸作为磺化的扩散来确定折射率分布,所以可以容易地控制本方法以获得所需的折射率分布。
    • 6. 发明申请
    • METHOD FOR DETECTING TARGET BIOLOGICAL MATERIAL USING DNA BARCODES
    • 使用DNA条形码检测目标生物材料的方法
    • US20090005255A1
    • 2009-01-01
    • US11758735
    • 2007-06-06
    • Sang Don JUNGMyung Ae CHUNGHyo Bong HONG
    • Sang Don JUNGMyung Ae CHUNGHyo Bong HONG
    • C40B30/00
    • C12Q1/6816C12Q1/6834C12Q1/6837C12Q2563/185C12Q2563/143
    • A method for detecting a target biological material using DNA barcodes is provided. The method comprises: attaching a first type of probes to the surface of magnetic particles to prepare magnetic particles for isolation wherein the first type of probes are at least partially complementary to a target biological material of interest; attaching a second type of probes to the surface of polymer particles to prepare polymer particles for analysis wherein the second type of probes are at least partially complementary to the target material but are different from the first type of probes, and attaching DNA barcodes as identification codes to the surface of the polymer particles wherein the DNA barcodes are present in an amount at least three times the amount of the second type of probes, have a predetermined sequence and are labeled with a label material; reacting the magnetic particles for isolation, the polymer particles for analysis and the target material in a hybridization reaction buffer to prepare composites, each of which consists of one magnetic particle for isolation, the target material and one polymer particle for analysis; separating the composites from unreacted reactants using a magnetic separator; heating the separated composites to denature the DNA barcodes present in the polymer particles for analysis and removing the magnetic particles for isolation and the polymer particles for analysis from the composites by centrifugation to isolate the DNA barcodes; and detecting a signal generated from the label material bound to the isolated DNA barcodes.
    • 提供了使用DNA条形码检测靶生物材料的方法。 该方法包括:将第一类型的探针附着到磁性颗粒的表面以制备用于分离的磁性颗粒,其中第一类型的探针与感兴趣的目标生物材料至少部分互补; 将第二类型的探针连接到聚合物颗粒的表面以制备用于分析的聚合物颗粒,其中第二类型的探针与靶材料至少部分互补,但不同于第一类型的探针,并且附接DNA条形码作为识别代码 其中DNA条形码以至少三倍于第二类型探针的量存在的聚合物颗粒的表面具有预定的序列并用标记材料标记; 使用于分离的磁性颗粒,用于分析的聚合物颗粒和杂交反应缓冲液中的靶材料以制备复合材料,每个复合材料由用于分离的一个磁性颗粒组成,目标材料和一个用于分析的聚合物颗粒; 使用磁选机将复合材料与未反应的反应物分离; 加热分离的复合材料以使存在于聚合物颗粒中的DNA条形码变性以分析和除去用于分离的磁性颗粒和聚合物颗粒,以通过离心分离来分离DNA条形码; 并检测从与分离的DNA条形码结合的标签材料产生的信号。