• 한국산학기술학회논문지
• /
• 제4권3호
• /
• pp.209-213
• /
• 2003

Polyaniline (PANi) composite particles were synthesized by chemical oxidation polymerization of aniline in presence of poly-n-isopropyl acryl amide (PNIPAM). The PANi particles formed in the reaction medium deposited onto non-conducting PNIPAM template to produce PANi-coated composite particles. The formation of composite was confirmed by FT-IR spectroscopy, and UV-VIS spectroscopy, and their morphological structures were examined by scanning electron microscopy (SEM). From the experimental results, it was determined that PANi was successfully coated onto non-conducting PNIPAM.

• 한국진공학회:학술대회논문집
• /
• 한국진공학회 2011년도 제40회 동계학술대회 초록집
• /
• pp.348-348
• /
• 2011

We present the interfacial electronic structures of electrodeposited Cu and Fe on bare and 1,4-phenylene diisocyanide (PDI)-functionalized Au nanoisland templates (NITs), and Au and Ag nanoparticles on transition metal oxide supports. Our discussion is based on the depth-profiling X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM).

• 한국산학기술학회:학술대회논문집
• /
• 한국산학기술학회 2003년도 춘계학술발표논문집
• /
• pp.334-336
• /
• 2003

Polyaniline(PANi) composite panicles were synthesized by chemical oxidation polymerization of aniline in presence of Poly-N-Isopropyl acryl amide(PNIPAM). The PANi panicles are formed in the reaction medium deposited onto non-conducting PNIPAM template to produce PANi-coated composite panicles. The formation of composite was confirmed by FT-IR spectroscopy, and UV-VIS spectroscopy, and their morphological structures were examined by scanning electron microscopy(SEM). From the experimental results, it was determined that PANi was successfully coated onto non-conducting PANIPAM.

• 접착 및 계면
• /
• 제1권1호
• /
• pp.47-55
• /
• 2000

In this article, the characterization of the interface of hybrid composites was discussed. Interfacial interaction in organic/inorganic hybrid composites, especially silica-containing hybrids can be characterized by fluorescence spectroscopy, small angle X-ray scattering (SAXS), scanning electron microscopy (SEM), atomic force microscopy (AFM), and $^{29}Si$ NMR spectroscopy measurements.

• 대한전자공학회논문지SD
• /
• 제41권1호
• /
• pp.15-20
• /
• 2004

산화막위에 증착된 금속박막과 산화막과의 계면효과를 조사하였다. 산화막으로는 현재 반도체소자제조공정에 많이 사용되고 있는 BPSG 산화막과 PETEOS 산화막을 사용하였다. 이 두 종류의 산화막위에 적층구조의 금속박막을 형성한 후, 금속박막의 열처리에 의한 계면의 영향을 SEM (scanning electron microscopy), TEM (transmission electron microscopy), AES (auger electron spectroscopy)를 사용하여 조사하였다. BPSG 산화막위에 증착된 금속박막을 $650^{\circ}C$ 이상에서 RTP anneal을 한 경우, BPSG 산화막과 금속박막의 계면결합상태가 좋지 않았고, BPSG 산화막과 금속박막의 계면에 phosphorus가 축적된 영역을 확인하였다. 반면에 PETEOS 산화막위에 증착된 금속박막의 경우, RTP anneal 온도에 관계없이 계면결합상태는 좋았다. 본 연구에서 BPSG 산화막위에 금속박막을 증착할 경우 RTP anneal 온도는 $650^{\circ}C$ 보다 작게 하여야 함을 알 수 있었다.

• 열처리공학회지
• /
• 제4권3호
• /
• pp.21-30
• /
• 1991

Microstructural analysis was conducted to observe the effect of aging treatments in a Cr-Mn austenitic stainless steel containing nitrogen, and the amount, size, shape and distribution of precipitates were investigated. It was found that on water quenching from $1000^{\circ}C$ after holding 3 h at that temperature, the steel contained no precipitates observable by optical microscopy. Precipitation of phases begins at places most favorable for the formation of nuclei-in the boundaries of grains and twins. Precipitates were studied in detail by means of scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Chemical compositions of precipitates were examined by the use of scanning transmission electron microscopy (STEM) together with an energy dispersive X-ray (EDX) microanalysis. Also chromium depletion adjacent to grain boundary precipitates was investigated by the use of Auger electron spectroscopy (AES) for a direct examination of the fracture surface chemistry.

• 한국세라믹학회지
• /
• 제27권1호
• /
• pp.136-146
• /
• 1990

Whiskers of SiC were grown from the mixture of silica and graphite powders by Acheson method(direct heating method). The structrua, morphological and chemical characterizations have been performed by X-ray diffractometer(XRD), transmission electron microscopy(TEM), optical microscopy(OM), scanning electron microscopy(SEM), X-ray photoelectron spectroscopy(XPS) and energy dispersive spectrometer(EDS). The growth mechanism of SiC whiskers is also discussed.

• 한국신재생에너지학회:학술대회논문집
• /
• 한국신재생에너지학회 2009년도 추계학술대회 논문집
• /
• pp.371-372
• /
• 2009

We have prepared and characterized CIGS nanopowder for absorber layer of photovoltaic. CIGS nanopowder were obtained at $260^{\circ}C$ for 6 hours from the reaction of $CuCl_2$, $InCl_3$, $GaCl_3$ and Se powder in solvent. The CIGS nanopowder were identified to have a typical chalcopyrite tetragonal structure by using X-ray diffraction(XRD), Inductively Coupled Plasma Auger Electron Spectroscopy (AES), Scanning Electron Microscopy(SEM).

• 폴리머
• /
• 제33권2호
• /
• pp.169-174
• /
• 2009

Poly(ethylene glycol)(PEG)이 콘택트렌즈에 미치는 영향을 조사하기 위하여 PEG가 도입된 실리콘 수화젤 렌즈를 제조하고 특성을 평가하였다. 실리콘 수화젤 렌즈는 methacryloxypropyl tris(trimethylsiloxy) silane(TRIS), methyl methacrylate(MMA), N,N'-dimethyl acrylamide(DMA) 등과 PEG 함유 단량체인 poly(ethylene glycol) methyl ether methacrylate(PEG-MEM)를 공중합하여 제조하였다. 특성평가는 Fourier transform infrared spectroscopy(FT-IR), electron spectroscopy of chemical analysis(ESCA), scanning electron microscopy(SEM) 등과 물 흡수도, 물 접촉각, 광투과도, 인장강도 등을 평가하였고 단백질 흡착 실험을 행하였다. FT-IR 및 ESCA 분석결과 C-O 결합피크의 증가를 보여 PEG 도입을 확인하였고 SEM 분석결과 상분리 현상은 나타나지 않았다. 물흡수도는 PEG-MEM의 도입에 따라 1차적으로 증가하였고 물 접촉각 및 광투과도는 감소하는 현상을 나타내었다. 단백질흡착 실험결과, PEG의 도입에 따라 눈물 속에 있는 단백질인 albumin, lysozyme, $\gamma$-globulin 등의 흡착이 감소하는 현상을 나타내었다. 또한 PEG 분자량의 증가에 따라 흡착되는 단백질의 양이 감소하는 것을 확인할 수 있었다. 인공눈물을 사용한 단백질 흡착실험에서도 PEG의 도입에 따라 단백질 흡착이 감소하는 현상을 나타내었다.

• 한국결정성장학회지
• /
• 제22권1호
• /
• pp.25-28
• /
• 2012

Tin-oxide ($SnO_2$) nanowires have been synthesized on one-dimensional (1D) carbonization cotton fabric using chemical vapour deposition method. One-dimensional (1D) carbonization cotton fabric has been synthesized from cotton fabric using annealing process in nitrogen gas at $1000^{\circ}C$. The $SnO_2$ nanowires are single-crystalline rutile structures with 20 nm in diameter and 10 ${\mu}m$ in length. Scanning electron microscopy (SEM), x-ray photoelectron spectroscopy, Raman spectroscopy, transmission electron microscopy and photoluminescence (PL) spectroscopy were utilized to characterize the as-synthesized products.