Da-In Choi、Sang‐Woog Ryu2014-02-28Journal of the Korean Electrochemical Society
본 실험에서는 다양한 조성의 AMPS, POEM 및 GMA를 함유하는 공중합체를 합성하고, AMPS의 술폰산기와 $Li_2CO_3$ 와의 산염기 반응 및 에폭시기의 가교반응을 유도하여 가교결합된 poly(POEM-co-AMPSLi-co-GMA) 전해질을 제조하였다. POEM의 결정융점은 AMPS 및 POEM의 몰분율에 따라 변화되는 특징을 관찰할 수 있었으며, 리튬이온이 도입된 이후 대체적으로 감소되는 경향이 나타났다. 가교된 고분자의 이온전도도는 GMA의 함량이 증가할수록 다소 감소되는 결과가 나타났지만, 16 mol%까지는 $1.0{\times}10^{-6}S\…
Advancements in Battery MaterialsAdvanced Battery Materials and TechnologiesConducting polymers and applications
Byung-Sang Choi2014-02-28The Journal of the Korea institute of electronic communication sciences
CVD를 이용하여 다결정 및 단결정 Cu 시편에 대한 그래핀의 합성 실험을 수행하였으며, 광학현미경 조직사진과 이미지 분석을 통하여 그래핀의 성장거동과 합성에 대한 특성평가 결과를 제시 하였다. 다결정 Cu 시편의 결정성에 따른 그래핀의 성장에 대한 분석의 결과 그래핀의 성장이 다결정 Cu 시편의 결정에 따라 일정한 방향성을 갖고 성장한다는 것을 알 수 있었으며, 다결정 Cu 시편의 이웃하는 단일 결정 내에서 성장하는 그래핀 형성에 대한 이미지 분석의 결과 단층, 복층, 그리고 3층의 그래핀에 대한 특성 분석이 가능하였다. 또한, (111) 방향을 갖는 단결정 Cu…
Graphene research and applicationsGraphene and Nanomaterials ApplicationsChemical and Physical Properties of Materials
Hyun Joo Lee、Min Ki Choi、Jin Hee Park 等 4 位作者2014-02-28Textile Science and Engineering
In this study, a coaxial air-blown spinning system has been optimized for the variables of air flow rate, solution concentration, and voltage using the design of experiment (DOE) method. Both response surface analysis (RSA) and Taguchi's method (TM) were employed and compared to obtain the optimal process conditions.…
Electrospun Nanofibers in Biomedical ApplicationsPlant Surface Properties and TreatmentsElectrohydrodynamics and Fluid Dynamics
Ivy Krystal Jones、U. Hömmerich、E.C. Brown 等 4 位作者2014-02-28Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
The 1.6 μm emission properties originating from the 3F3, 3F4 → 3H4 transition of Pr3+ ions in Pr-doped PbCl2 crystals were investigated for possible application in resonantly-pumped, eye-safe laser development. Pr: PbCl2 was synthesized and purified through a combination of zone-refinement and chlorination of the melt…
Luminescence Properties of Advanced MaterialsSolid State Laser TechnologiesOptical properties and cooling technologies in crystalline materials
Natalia Resnina、Sergey Belyaev、Ksenia Anshukova 等 4 位作者2014-02-28International Journal of Materials Research (formerly Zeitschrift fuer Metallkunde)
Abstract This study is devoted to the investigation of the ability of Ti48Ni52 alloys for production of effective work during thermal cycling over a narrow temperature range. Effective work output and efficiency were studied in Ti48Ni52 alloy subjected to thermal cycling through the temperature range of the B2 ↔ R mar…
Shape Memory Alloy TransformationsIntermetallics and Advanced Alloy PropertiesTitanium Alloys Microstructure and Properties
In Seung Baek、In Tak Nam2014-02-28Journal of the Korean Magnetics Society
$Co_2Z$ -type hexaferrite 시편을 다양한 합성법을 이용하여 제조하였다. 수열합성법을 이용하여 M-type, $Co_2Y$ -type, $Co_2Z$ -type을 제조하였으며, 제조된 M-type과 $Co_2Y$ -type을 출발물질로 하여 고상반응법(ball milling)과 수열합성법(hydrothermal)으로 $Co_2Z$ -type을 제조하였다. 제조된 시편의 결정구조와 미세구조 자기적 성질은 XRD, FESEM, VSM, impedance analyzer를 이용하여 조사하였다. M-type과 $Co_2Y$ -type은 단일상의 결정구조를…
Advancements in Battery MaterialsMagnetic Properties and Synthesis of FerritesElectromagnetic wave absorption materials
Marie Chavoutier、Hassan Ajrouche、Yannick Petit 等 14 位作者2014-02-28Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
Characterizations of linear spectroscopic properties in polarized light have been performed for the highly-concentrated Yb-doped borate family Li6Ln(BO3)3 (with Ln: Gd, Y, and labeled Yb:LLnB), in order to start to evaluate their potentiality for high-power laser applications. Modifications in spectral distributions a…
Glass properties and applicationsPhotorefractive and Nonlinear OpticsSolid State Laser Technologies
Seokbon Koo、Jin-Young Hur、Hong-Kee Lee2014-02-28Journal of the Korean institute of surface engineering
The copper deposit on steel plate was prepared by pyrophosphate copper plating solution made with variation of inorganic additive. $NH_4OH$ and $NH_4NO_3$ were used as inorganic additives. The copper layer characteristics - tensile strength, crystallite size and crystal orientation - were evaluated by X-ray diffractio…
Corrosion Behavior and InhibitionElectrodeposition and Electroless CoatingsCopper Interconnects and Reliability
Chemistry, INIFTA、Ricardo Tucceri2014-02-28SOP Transactions on Physical Chemistry
The aim of this work was to study the effect of prolonged potentiodynamic cycling (PPC) on the conducting properties of poly(oaminophenol (POAP) film electrodes. PPC reduces strongly the electron transport rate at POAP films. This effect is called herein deactivation. Cyclic Voltammetry (CV), Rotating Disc Electrode V…
Conducting polymers and applicationsElectrochemical Analysis and ApplicationsAnalytical Chemistry and Sensors
Jae‐Woo Park、Kae-Myung Kang2014-02-28Journal of the Korean Institute of Gas
고강도 DP강의 수소취성 거동을 소형펀치시험을 통해 평가하였다. 이를 위해 첨가원소가 각기 다른 3종의 DP강 시험편에 전기화학적 방법으로 수소를 강제 주입시켰다. 수소주입 후, 수소주입량을 측정하였다. 수소주입량은 마르텐사이트 부피분율에 크게 의존하는 것으로 조사되었다. 전류밀도 150, $200mA/cm^2$ 조건에서 25시간이 포화상태에 도달하는 수소주입조건으로 나타났다. SP시험 후 SP에너지와 SP bulb 형상을 비교한 결과, 수소주입량의 증가에 따라 SP에너지와 SP bulb 높이가 감소하는 것으로 나타났다. 또한 SP bulb 파단면에서는 뚜렷한 fa…
Corrosion Behavior and InhibitionFatigue and fracture mechanicsHydrogen embrittlement and corrosion behaviors in metals
Ueil-Joong Yoon2014-02-28The Journal of Advanced Navigation Technology
본 논문에서는 2개 유전체층 위의 완전도체띠 격자구조에 의한 TM (transverse magnetic)산란의 급속한 수렴 해에 대한 문제를 수치해석 방법인 FGMM (Fourier Galerkin moment method)를 이용하여 해석하였다. TM 산란에 대하여 유도되는 표면 전류밀도는 스트립 양 끝에서 매우 큰 값이 예측되므로, 이때 스트립에 유도되는 전류밀도는 적절한 모서리 경계조건을 만족하는 함수와 1종 Chebyshev 다항식의 곱의 급수로 전개하였다. 도체띠에 유도되는 전류밀도, 정규화된 반사전력 및 투과전력을 계산하였다. 제안된 함수를 사용한 수치결…
Electromagnetic Scattering and AnalysisAdvanced Antenna and Metasurface TechnologiesOptical Coatings and Gratings
Vladimir I. Aksinin、S A Antsiferov、S D Velikanov 等 11 位作者2014-02-28Quantum Electronics
The influence of gas temperature on the characteristics of a self-sustained volume discharge was studied in the working mixtures of a chemical oxygen – iodine laser with pulsed electricdischarge production of iodine atoms. In experiments, laser working mixtures were modelled by the mixture of air and iodide C{sub 2}H{…
Diamond and Carbon-based Materials ResearchLaser Material Processing TechniquesLaser Design and Applications
Chang-Shin Lee、Chia-Hao Lin、Wan-Lun Hsieh 等 5 位作者2014-02-28Journal of Nanoscience and Nanotechnology
Four peptides, C1 (spanning the helical segment of human neuropeptide Y from residue 15 to residue 29), C2 (spanning the helical segment of 21 to 31), C3 (the C-terminal fragment of neuropeptide Y involving residues 20 to 36) and P34-C3 (replacement of the glutamine with proline in position 34 of C3) were synthesized…
Glycosylation and Glycoproteins ResearchChemical Synthesis and AnalysisSupramolecular Self-Assembly in Materials
Sang-Yun Shin、Do Hoon Lee、Seo-Eun Kim 等 4 位作者2014-02-28Journal of the Korea Foundry Society
The austempering transformation behavior in Fe-0.7wt.%C-2.3wt.%Si-0.3wt.%Mn steel is investigated. Each specimen was austenitized for 60 min at $900^{\circ}C$ , and austempered at $380^{\circ}C$ for different time periods varying from 2 min to 256 min. After the austempering heat treatment, the Stage I and II evolutio…
Microstructure and Mechanical Properties of SteelsMagnetic Properties and ApplicationsMetal Alloys Wear and Properties
Seong Bong Kim、Hui Jea Lee、Seungil Park 等 7 位作者2014-02-28Journal of the Korean institute of surface engineering
I-V characteristics of a cylindrical target in an ECR plasma were studied for sheath spatial evolutions when the target was pulsed biased to a high negative potential. The magnetic field effects on sheath thickness and sheath boundary speed were investigated by comparison between the experimental results and the theor…
Diamond and Carbon-based Materials ResearchPlasma Diagnostics and ApplicationsElectrostatic Discharge in Electronics
Seon-Woong Kim、Cheol‐Ho Lee、Kyungkoo Lee2014-02-28대한건축학회 논문집 - 구조계
In this paper, a kinematic modeling of the composite floor slabs under the column missing scenario is proposed that can be used for more accurate evaluation of progressive collapse resistance of steel moment frames. To this end, the behavior of double-span composite floor slabs is first investigated using the advanced…
High-Velocity Impact and Material BehaviorStructural Response to Dynamic LoadsFire effects on concrete materials
Soon Ja Park、In-Hyeng Kang2014-02-28Journal of the Korean Society of Clothing and Textiles
Persimmon juice dye-printed fabrics with printing were used for a Galot one-piece dress. The Galot dress was assessed in comparison to a white undyed one-piece dress of the same design through a wearing test conducted in a climatic chamber with an air temperature of $30{\pm}1^{\circ}C$ , $50{\pm}5%$ R.H, and 0.2m/sec…
Thermoregulation and physiological responsesTextile materials and evaluationsColor perception and design
Jae Yeol Yang、Byung Sung O、Jae Sik Yoon2014-02-28Journal of the Korean Institute of Resources Recycling
본 연구에서는 metal organic chemical vapor deposition(유기금속화학증기증착, MOCVD) 장치로 부터 LED용 GaN epi 성장 시원료로 사용되는 트리메틸갈륨에 대해서 사용 후 잔량을 회수하고 정제하여 재이용할 수 있는 공정 및 시스템을 개발하고자 한다. 본 공정에서 회수된 트리메틸갈륨에 대해서 화학적, 구조적 특성 평가를 통해서 재이용 가능여부를 검토하였다. 먼저 ICP-MS, ICPAES를 이용하여 순도를 분석한 결과 7N(99.99999%)의 고순도 트리메틸갈륨임을 확인했으며, NMR 분석을 통해서 트리메틸갈륨의 구조적 변화를…
ZnO doping and propertiesGaN-based semiconductor devices and materialsGa2O3 and related materials
S. Barzilai、Francesca Tavazza、Lyle E. Levine2014-02-28Modelling and Simulation in Materials Science and Engineering
Gold nanowire (NW) chains are considered a good candidate for nano-electronics devices because they exhibit remarkable structural and electrical properties. One promising nano-conductor candidate is called ‘Hexa1’. It has a two-dimensional, one atom thick structure and was found to spontaneously form during simulation…
Graphene research and applicationsAdvancements in Semiconductor Devices and Circuit DesignMolecular Junctions and Nanostructures
Jaehong Lee、Yeong-Sik Kim2014-02-28Journal of Power System Engineering
This article describes effect of post heat treatment on wear characteristics of thermally sprayed Co-based self-flux alloy coating. Co-based self-flux alloy coatings were deposited on steel substrates using a flame spray process. Post heat treatments were carried out at 800, 900, 1000 and $1100^{\circ}C$ for 30min in…
High-Temperature Coating BehaviorsAdvanced materials and compositesMetal Alloys Wear and Properties