公开(公告)号：KR1020070104091A

公开(公告)日：2007-10-25

申请号：KR1020060036248

申请日：2006-04-21

Applicant: 재단법인서울대학교산학협력재단

Inventor： 윤의준 ,  박찬 ,  조욱 ,  김동혁 ,  전용선 ,  김희진

IPC: H01L33/12 ,  H01L33/26

Abstract: A method for forming III-nitride semiconductor layer and an apparatus using the same are provided to use single crystal SiO2 substrate instead of a conventional sapphire substrate and a silicon carbide substrate. A method for forming III-nitride semiconductor layer includes the steps of: a first step of forming a buffer layer(32) on a single crystal SiO2 substrate(31); and a second step of forming the III-nitride semiconductor layer(33) on the buffer layer. In at least one between the first and second steps, the single crystal SiO2 substrate serves a displacive phase transition. The single crystal SiO2 substrate is any one selected from a group consisting of an alpha quartz, a beta quartz, a low tridymite, a high tridymite, a low cristobalite, a high cristobalite or the like.

Abstract translation: 提供了用于形成III族氮化物半导体层的方法及其使用方法，以使用单晶SiO 2衬底代替常规蓝宝石衬底和碳化硅衬底。 一种形成III族氮化物半导体层的方法包括以下步骤：在单晶SiO 2衬底（31）上形成缓冲层（32）的第一步骤; 以及在缓冲层上形成III族氮化物半导体层（33）的第二步骤。 在第一和第二步骤中的至少一个中，单晶SiO 2衬底用于置换相变。 单晶SiO 2衬底是从由α石英，β石英，低鳞石英，高鳞石英，低方英石，高方英石等组成的组中选择的任意一种。

公开(公告)号：KR101070233B1

公开(公告)日：2011-10-06

申请号：KR1020080085691

申请日：2008-09-01

Applicant: 재단법인서울대학교산학협력재단

Inventor： 유영제 ,  김양희 ,  김희진

IPC: C12N13/00

CPC classification number: H01M8/16 ,  Y02E60/527

Abstract: 본발명은전기화학적방법을이용한조효소의재생방법, 이를이용한효소적산화환원방법, 및효소바이오센서와효소연료전지에관한것으로, 보다상세하게는금속산화물전극에직접전자를전달하거나전달받아조효소가산화또는환원되고, 전자전달매개체를사용하지않는것을특징으로한다. 본발명의조효소재생방법은재생된조효소를보다저비용으로간단하게얻을수 있으므로, 전기화학적생물반응기뿐만아니라바이오센서, 생물연료전지등 다양한분야에널리적용시킬수 있다.

公开(公告)号：KR1020090023541A

公开(公告)日：2009-03-05

申请号：KR1020080085691

申请日：2008-09-01

Applicant: 재단법인서울대학교산학협력재단

Inventor： 유영제 ,  김양희 ,  김희진

IPC: C12N13/00

CPC classification number: H01M8/16 ,  Y02E60/527

Abstract: A method for electrochemically regenerating a coenzyme used for a biosensor or an enzymatic biofuel cell is provided to simply regenerate the coenzyme at low costs. A method for electrochemically regenerating a coenzyme includes oxidization of the coenzyme by directly delivering electron to a metal oxide electrode or reduction of the coenzyme by directly accepting the electron from the metal oxide electrode. The metal of the metal oxide electrode shows the second to fourteenth group and the third to sixth period among the periodic table of the chemical elements. The metal of the metal oxide electrode is selected from the group consisting of tin, iridium, titanium, chrome, copper, manganese, iron, tungsten, nickel, zinc, niobium, magnesium, aluminium, ruthenium, lead and their mixtures.

Abstract translation: 提供了用于生物传感器或酶生物燃料电池的用于电化学再生辅酶的方法，以简单地以低成本再生辅酶。 电化学再生辅酶的方法包括通过直接将金属氧化物电极传递到金属氧化物电极或通过直接接受来自金属氧化物电极的电子来还原辅酶来氧化辅酶。 金属氧化物电极的金属在化学元素的周期表中显示第二至第十四组和第三至第六周期。 金属氧化物电极的金属选自锡，铱，钛，铬，铜，锰，铁，钨，镍，锌，铌，镁，铝，钌，铅及其混合物。