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박창신(Chang-sin Park),이동원(Dong-weon Lee),강보선(Bo-seon Kang) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
This paper reports fabrication and characterization of a pressure sensor using pitch-based Carbon fiber. Pitch-based Carbon fibers have been shown to exhibit the piezoresistive effect, in which the electric resistance of the material changes under mechanical deformation. Pressure sensors were designed and built by performing backside etching on SOI wafers and creating suspended square membrane on the front side. An AC electric field which causes dielectrophoresis was used for alignment and deposition of a Carbon fiber between two electrodes on the membrane. Finally, pressure was applied uniformly on the membrane and the resistance change in the Carbon fiber was measured.
한창용(Chang-Yung Han),박창신(Chang-Sin Park),강미현(Mi-Hyun Kang),이동원(Dong-Weon Lee) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
In this paper, a novel approach is proposed to design a micro-bio flow sensor based on SU-8, PDMS as sensor substrate and Carbon fiber as piezoresistor. This novel micro-bio flow sensor design is a free-standing structure with SU-8 pattern and put on a Carbon fiber. By using a Carbon fiber, a micro-bio flow sensor can be detected to properties of flux as a function of Carbon fiber and a free-standing deflection. The deflection characteristics on applied flux were simulated through FEM. Finally, proposed a novel micro-bio flow sensor can be used for various bio-chip applications due to bio-compatible materials.
강미현(Mi-Hyun Kang),박창신(Chang-Sin Park),이동원(Dong-Weon Lee) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
An array (4 by 4) of a novel bio-sensor has been designed, fabricated and evaluated for biomedical applications. Each array element consists of two resonators of different sizes, a small resonator for sensing and a big resonator for actuation. The big resonator structure with integrated coils is placed in a transverse magnetic field. An alternating current is then applied through a metal line on the resonator surface to drive the resonator by means of the Lorentz force. The resulting motion of the small resonator through the magnetic field generates an electromotive force to a metal loop. By measuring the change of the induced electromotive force, the small resonator can be used as the bio sensor. We also developed a novel polymer monolayer to prevent biofoiling effects on the silicon substrate. Basic characteristics of the monolayer are evaluated by using avidin-biotin interaction.
IoT 기술을 이용한 안드로이드 기반 배뇨 모니터링 시스템
이다빈 ( Da-bin Lee ),박창신 ( Chang-sin Park ),심예주 ( Ye-ju Sim ),김형훈 ( Hyung-hoon Kim ) 한국정보처리학회 2017 한국정보처리학회 학술대회논문집 Vol.24 No.2
유아와 더 나아가 치매 노인, 하반신 마비 장애인 등 성인도 사용할 수 있는 배뇨 모니터링 시스템이다. 기저귀 브랜드와 유아용, 성인용을 구분하지 않는 부착 범위를 가지고 있다. 아두이노를 통해 착용자의 상태를 센싱하여 블루투스로 전송 후 안드로이드를 통해 착용자의 상태를 확인 하고 케어 하는 환경을 제공한다. 잦은 소변확인으로 느낄 수 있는 착용자의 수치심, 불편함을 디바이스를 통해 개선하는 동시에 보호자의 시간을 절약해주고 보장해준다.
인간의 갑상선 결절성 과증식증과 유두상 암종에서의 Endothelial Nitric Oxide의 발현
김영모(Young Mo Kim),조정일(Jung Il Cho),김용재(Yong Jai Kim),양태용(Tae Yong Yang),김대형(Dae Hyung Kim),박창신(Chang Sin Park),한창준(Chang Jun Han) 대한두경부종양학회 2001 대한두경부 종양학회지 Vol.17 No.2
Background and Objectives: Nitric oxide (NO) is generated in mammalian tissue by the conversion of L-arginine to L-citrulline. This reaction is catalyzed by nitric oxide synthase (NOS). NO is an important bioactive agent and a signalling molecule that mediates a variety of biologic actions such as vasodilation, neurotransmission, host defense, and iron metabolism but increased NO production may also contribute to the pathogenesis of a various of disorders, including cancer. Before now, the role of NO in thyroid gland is still investigated and it was supposed that NO mediate the angiogenesis in tumor growth. Others journal and works identified the expression of iNOS that involve by neutrophil and eNOS that involve in part in the vascular remodeling and to understand the role of NO in human thyroid gland. But authors revealed only eNOS in thyroid neoplasm. iNOS was identifed by inflammation in fault. Materials and Methods: Western blot analysis was performed, using a polyclonal antibody against eNOS (Rabbit polyclonal IgG). Using the same antibody, the distribution of eNOS was examined in 15 formalin-fixed paraffin embedded samples by immunohistochemistry. By NADPH consumption rate, NOS activity was estimated at nodular hyperplasia. Results: Western blot analysis exhibited that eNOS was significantly elevated in thyroid papillary carcinoma, compared to that in nodular hyperplasia and normal tissue. Immunohistochemistry showed that the immunoreacitivity was present more significantly in thyroid follicular epithelial cell layer than vascular endothelial cell. NOS activity increased in nodular hyperplasia. Conclusions: Thyroid papillary cancer without neutrophil invasion expressed only eNOS. The endothelial localization of eNOS may play an important role in pathogenensis of human thyroid nodular hyperplasia and the follicular localization of thyroid papillary carcinomas.