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Yong-Seung Bang(방용승),Namgon Kim(김남곤),Jung-Mu Kim(김정무),Changyul Cheon(천창율),Youngwoo Kwon(권영우),Yong-Kweon Kim(김용권) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
This paper reports on a fabrication of novel substrate integrated waveguide (SIW)-based shielded stripline applicable to the broadband transverse electromagnetic (TEM) single-mode propagation. We suggested a structure for half-SIW and half-shielded stripline, which combined through the benzocyclobutene (BCB) bonding layer. The electrical interconnection between the sidewall of anisotropic wet-etched silicon and patterned BCB layers is measured subsequent to the metalization on the side wall. The proposed SIW-based shielded stripline has great potential in terms of simple fabrication, integration with planar circuits and monolithic system fabricated on a SIW structure.
방용승(Yong-Seung Bang),심태석(Tae Seok Sim),김성현(Sung Hyun Kim),강성권(Sung Gwon Kang),김용권(Yong-Kweon Kim) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
This paper reports on a flexible and biocompatible platinum thermoresistive temperature sensor for the application of an ultrasonic resonance thrombolysis device for ischemic stroke. The proposed flexible platinum temperature sensor consists of a polyimide substrate, a platinum thermoresistive element and a polyimide insulation layer. The temperature coefficient of resistance (TCR) and sensitivity of the designed temperature sensor were measured and calculated to be 2.63×10?³/℃ and 0.93 ℃/sec, respectively.
서브마이크론 빔 레조네이터 제작을 위한 바닥전극 형성방법
이용석(Yong-Seok Lee),장윤호(Yun-Ho Jang),방용승(Yong-Seung Bang),김정무(Jung-Mu Kim),김종만(Jong-Man Kim),김용권(Yong-Kweon Kim) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.10
We describe a fabrication method of submicron glass trenches which have embedded metal lines for the future application of nano-scale RF MEMS devices. The glass wafer was etched using two different conditions to identify the relationship between the slope of glass trenches and the slope of photoresist. A self-aligned metal photomask and negative siserortohp (PRJ slope were used to insert metal lines inside the glass trenches. The PR slope patterned by backside photolithography was affected by the profile of preformed glass trenches. Gold was well fabricated in the 0.7 ㎛ wide trench thanks to the negative PR slope. Nano-scale glass trenches with embedded metal lines can be used as a bottom electrode in submicron beam resonators operating with a high resonant frequency.
황성현(Sung-Hyun Hwang),장태희(Taehee Jang),방용승(Yong-Seung Bang),김종만(Jong-Man Kim),김용권(Yong-Kweon Kim),임성준(Sungjoon Lim),백창욱(Chang-Wook Baek) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
This study proposes a composite right/left-handed transmission line (CRLH-TL) that permits switching between the right-handed (RH) and left-handed (LH) modes using single crystalline silicon (SCS) RF MEMS switches. It is possible to change modes from the RH to LH mode, or vice versa, by controlling the admittance of capacitors and the impedance of inductors using switch operations. The proposed switchable CRLH-TL consists of SCS RF MEMS switches, metal-insulator-metal (MIM) capacitors and shunt inductors. At 8 ㎓, the fabricated device shows a phase response of 87° with an insertion loss of 2.7 ㏈ in the LH mode, and a phase response of -77° with an insertion loss of 0.56 ㏈ in the RH mode.
Fabrication and Experiment of Piezoelectric Micro Cantilever Applicable to Thrombolysis
백건훈(Kun Hoon Baek),서영태(Young-Tai Seo),방용승(Yong-Seung Bang),김종만(Jong-Man Kim),김성현(Sung Hyun Kim),김용권(Yong-Kweon Kim) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.11
This paper describes a resonant driving piezoelectric micro cantilever practicable to ultrasound thrombolysis device for the treatment of ischemic stroke. The proposed piezoelectric cantilever was designed to be a unimorph structure of Si/SiO₂/Ti/Pt/PZT/Pt, and fabricated by top-down sequence etching process. The red blood cell (RBC) lysis experiment was carried out to confirm the usability of the proposed cantilever. Total 87.76% of RBCs were ruptured using the ultrasound generated by up-down actuations of the fabricated cantilever with AC voltage having the frequency of 19.36 ㎑ and the magnitude of 30 V<SUB>p-p</SUB>.