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A Study on Graphene Structure Control Using Ammonia Gas for a Highly Sensitive Pressure Sensor
암모니아를 이용한 그래핀 구조 제어 및 고감도 압력 센서로의 적용
Yeon Wook Jung, Seung Geun Jo, Hae-In Moon, Young Won Kim, Yujin Shin, Gil-Ryeong Park, Jung Woo Lee
정연욱, 조승근, 문해인, 김영원, 신유진, 박길령, 이정우
Korean J. Met. Mater. 2022;60(3):206-212.   Published online 2022 Feb 8
DOI: https://doi.org/10.3365/KJMM.2022.60.3.206

Graphene has been used in various fields because of its excellent mechanical, optical, electrical, and thermal properties. However, its intrinsic low sensitivity to pressure limits its sensor applications. To overcome this drawback, many researchers have tried to improve the sensitivity by controlling the defects on the graphene, but have yet..... More

                           Cited By 1
Thermal Conductivity of Three-Dimensionally Interconnected Graphene-Networked Cu Composite Fabricated by a Simple Two-Step Process
Xue Li, Terry Arthur Ring, Byung-Sang Choi
Korean J. Met. Mater. 2019;57(8):529-534.   Published online 2019 Jul 11
DOI: https://doi.org/10.3365/KJMM.2019.57.8.529

A Cu composite reinforced by a three-dimensionally interconnected graphene network was synthesized in situ by a simple two-step process utilizing compacted Cu powder (99% purity) as a template for the growth of graphene. Cu composites with different graphene contents were obtained by controlling the processing parameters. The composites were approximated..... More

                           Cited By 4
Investigation of the Mechanical/Thermal Properties of Nano-Scale Silicon Nitride Membranes
나노스케일 질화규소 멤브레인의 기계적, 열적 특성 분석
Yong Ju Jang, Hyeon-Jin Shin, Seong Ju Wi, Ha Neul Kim, Gi Sung Lee, Jinho Ahn
장용주, 신현진, 위성주, 김하늘, 이기성, 안진호
Korean J. Met. Mater. 2019;57(2):124-129.   Published online 2019 Jan 9
DOI: https://doi.org/10.3365/KJMM.2019.57.2.124

In micro/nano electro-mechanical system, silicon nitride (SiNx) membrane has been widely used in sensors, energy harvesting and optical filters because of its mechanical/chemical stability. However, it is necessary to verify mechanical and thermal properties of nanoscale SiNx membranes to ensure the desirable reliability and durability of a device because the..... More

                           Cited By 2
Microstructure of Rhenium Coatings Deposited by CVD on Graphite and Mo Substrates
흑연 및 Mo 기판 위에 CVD 성장된 Re 코팅층의 미세조직
Sun Kyu Lee, Dong Yun Nam, Nam Ho Bae, Sung Taek Lim, Yong-Jun Oh
이선규, 남동윤, 배남호, 임성택, 오용준
Korean J. Met. Mater. 2018;56(3):197-204.   Published online 2018 Mar 6
DOI: https://doi.org/10.3365/KJMM.2018.56.3.197

Rhenium coatings were fabricated on a graphite substrate at 1100 and 1250 oC and a molybdenum substrate at 1150 and 1250 oC by chemical vapor deposition (CVD) using ReCl5 precursor, and the effects of deposition temperatures and substrates on microstructure and crystal orientation were investigated. The rhenium coating on graphite..... More

High-temperature Corrosion of AlCrTiSiN Film in Ar-1%SO<sub>2</sub> Gas
Poonam Yadav, Sik Chol Kwon, Yue Lin, Shihong Zhang, Dong Bok Lee
Korean J. Met. Mater. 2017;55(4):222-226.   Published online 2017 Apr 6
DOI: https://doi.org/10.3365/KJMM.2017.55.4.222

An AlCrTiSiN film composed of 31Al-15Cr-1.7Ti-0.5Si-51.8N (at%) was deposited on a steel substrate by arc ion plating to a thickness of 1 μm. It consisted of nano crystalline hcp-AlN and fcc-CrN. Its corrosion behavior in Ar-1%SO2 gas at 800 ℃ for 5-50 h was studied. The resulting scales consisted primarily..... More

Optical Devices & Energy Materials
Synthesis and Photoluminescence Studies of ZnO Films Using Vapor Phase Transport Combined With Rapid Heating
Iksoo Ji, Jae-Young Leem
Korean J. Met. Mater. 2016;54(8):609-614.   Published online 2016 Aug 5
DOI: https://doi.org/10.3365/KJMM.2016.54.8.609

The vapor phase transport (VPT) process is usually used for the growth of one-dimensional nanostructures rather than for film deposition. In this study, for the first time, we report on the fabrication and optical propeties of ZnO film produced by VPT combined with rapid heating. The X-ray diffraction results showed..... More

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