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Study on the Circuit Performance of Various Interconnect Metal Materials in the Latest Process Nodes
Moonjeong Choi,Juhwan Park,Seoungyeol Choi,Kyungbae Kwon,Yeji Lee,Wonyeong Jang,Jongwook Jeon 대한전자공학회 2023 Journal of semiconductor technology and science Vol.23 No.4
In this work, circuit-level benchmarks were performed on Copper(Cu), Tungsten(W), Cobalt(Co), Ruthenium(Ru), and Doped-multilayer-graphene (DMLG), which are various metallic material options applicable to the wire process at the late semiconductor process nodes. For the transistor, a multi-nanosheet field-effect-transistor (mNS-FET) with gate-all-around (GAA) technology was used, and the power and performance characteristics of the inverter ring oscillator circuit were analyzed assuming a 3 nm process node. In addition, various wire metal options for circuit layout were evaluated by varying fan-out number and wire length. As a result, the speed is fastest for Co and the speed reduction is smallest for DMLG in FO1 50CPP.
Kim, Moonjeong 충청수학회 2001 충청수학회지 Vol.13 No.2
In this paper, we present the proof of the property for interior metric space and geodesic space.
Bok, Moonjeong,Lee, Yunwoo,Park, Daehoon,Shin, Sangho,Zhao, Zhi-Jun,Hwang, Boyeon,Hwang, Soon Hyoung,Jeon, So Hee,Jung, Joo-Yun,Park, Sung Ha,Nah, Junghyo,Lim, Eunju,Jeong, Jun-Ho The Royal Society of Chemistry 2018 Nanoscale Vol.10 No.28
<P>In this study, a combined system of microneedles and a triboelectric nanogenerator (TENG) has been developed for drug delivery. A triboelectric device, which converts mechanical energy into alternating current (AC), was chosen to replace the electrophoresis (EP) effect. To directly generate triboelectricity from salmon deoxyribonucleic acid (SDNA)-based microneedles, a triboelectric series of SDNA film and chargeable polymers (polyimide and Teflon) was studied. The electrical output of the two charged polymers was compared to find a material that could be highly charged with SDNA. The electrical output was also compared as a function of the concentration of a drug embedded in the SDNA film, and the results confirmed that drug intercalation affected the carrier diffusion. The mechanical strength of the microneedles was assessed by histological analysis of their penetration into porcine cadaver skin. Furthermore, the output voltage of a system incorporating microneedles and TENG in cadaver skin, and <I>in vitro</I> drug release into gelatin were evaluated to examine potential application as an electrically active drug delivery system. The electrical output voltage of this system was ∼95 V. The mechanism of triboelectric perturbation to the skin has also been discussed. The system developed in this work is a new, facile approach toward effective drug delivery that replaces the existing EP method and expands the application of TENGs.</P>
Effect of Different Pretreatments on Indium-Tin Oxide Electrodes
Choi, Moonjeong,Jo, Kyungmin,Yang, Haesik Korean Chemical Society 2013 Bulletin of the Korean Chemical Society Vol.34 No.2
The effect of pretreatment on indium-tin oxide (ITO) electrodes has been rarely studied, although that on metal and carbon electrodes has been enormously done. The electrochemical and surface properties of ITO electrodes are investigated after 6 different pretreatments. The electrochemical behaviors for oxygen reduction, $Ru(NH_3){_6}^{3+}$ reduction, $Fe(CN){_6}^{3-}$ reduction, and p-hydroquinone oxidation are compared, and the surface roughness, hydrophilicity, and surface chemical composition are also compared. Oxygen reduction, $Fe(CN){_6}^{3-}$ reduction, and p-hydroquinone oxidation are highly affected by the type of the pretreatment, whereas $Ru(NH_3){_6}^{3+}$ reduction is almost independent of it. Interestingly, oxygen reduction is significantly suppressed by the treatment in an HCl solution. The changes in surface roughness and composition are not high after each pretreatment, but the change in contact angle is substantial in some pretreatments.
최문정 ( Moonjeong Choi ),최준성 ( Junesung Choi ),정익래 ( Ikrae Jeong ) 한국정보처리학회 2015 한국정보처리학회 학술대회논문집 Vol.22 No.1
사이버전의 위협은 종전에는 정보체계와 인터넷 망에 국한되는 것으로 여겨졌으나 현재에는 망분리 환경이나 정보체계가 아닌 소프트웨어에 대해서도 위협이 실제하고 있으며, 그 공격 양상이 다양화 복합화 되는 경향을 보이고 있다. 향후 사이버전은 융복합 무기체계가 포함하고 있는 다양한 내장형 소프트웨어에 공격으로 확대될 것이며, 이에 따라 무기체계 내장형 소프트웨어에 대한 사이버전 대응 준비가 필요하다. 본 논문에서는 무기체계 내장형 소프트웨어의 사이버전 대웅을 위한 방안으로 무기체계 내장형 소프트웨어의 보안성 강화를 위한 보안강화코딩(시큐어 코딩)을 적용 보안 프레임워크를 제안한다.