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ANTEC 2004 - Annual Technical Conference Proceedings

作者： Kar, Kamal K. Otaigbe, Joshua U. Department of Mechanical Engineering Materials Science Programme Indian Institute of Technology Kanpur-208016 India Department of Mechanical Engineering Massachusetts Inst. of Technology Cambridge MA 02139 United States Department of Polymer Science University of Southern Mississippi Hattiesburg MS 39406-0076 United States

An in-depth experimental and theoretical study of many important factors governing the Theological properties of liquid crystal polymers, Xydars (SRT-300, SRT-400, and SRT-900) is carried out by Advanced Rheometric Expansion System (ARES Spectrometer) in the parallel plate-plate configuration over a wide range of frequency, temp and strain level in the steady shear and dynamic conditions.

关键词： Liquid crystal polymers

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engineering hotspots in an ESP-LSP configuration for ultra-high SERS enhancement based sensors

Engineering hotspots in an ESP-LSP configuration for ultra-h...

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International Conference on Fibre Optics and Photonics, Photonics 2016

作者： Srivastava, Sachin K. Li, Anran Li, Shuzhou Abdulhalim, Ibrahim NTU-BGU-HUJ NEW CREATE Programme School of Materials Science and Engineering Nanyang Technological University Singapore Advanced Materials and Sensors Division CSIR-Central Scientific Instruments Organization Chandigarh India Department of Electrooptic Engineering Ilse Katz Institute of Technology Ben Gurion University of the Negev Beer Sheva Israel

The critical importance of inter-particle gap on SERS enhancement was established both theoretically and experimentally to achieve enhancement of 1010 in an ESP-LSP configuration. Highly sensitive detection of glyceri... 详细信息

ISBN: (纸本)9781943580224

关键词： Electric fields Raman spectroscopy Scanning electron microscopy Sensors Surface enhanced Raman scattering Surface plasmons

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Alleviating mechanical degradation of hexacyanoferrate via strain locking during Na^(+) insertion/extraction for full sodium ion battery

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Nano Research 2022年第3期15卷 2123-2129页

作者： Jianguo Sun Hualin Ye Jin An Sam Oh Yao Sun Anna Plewa Yumei Wang Tian Wu Kaiyang Zeng Li Lu Department of Mechanical Engineering National University of SingaporeSingapore 117575Singapore National University of Singapore Chongqing Research Institute Chongqing 401123China Department of Chemical&Biomolecular Engineering National University of SingaporeSingapore 117585Singapore Integrative Sciences and Engineering Programme NUS Graduate SchoolNational University of SingaporeSingapore 138632Singapore Singapore Institute of Manufacturing Technology A*STAR(Agency for ScienceTechnologyand Research)Singapore 138634Singapore School of Science Harbin Institute of TechnologyShenzhen 518055China Faculty of Energy and Fuels AGH University of Science and Technology al.Mickiewicza 30 30-059 KrakowPoland Institute of Materials Research and Engi

Generation of large strains upon Na^(+) intercalation is one of the prime concerns of the mechanical degradation of Prussian blue(PB)and its *** construction from the atomic level is imperative to maintain structural stability and ameliorate the long-term stability of ***,an inter nickel hexacyanoferrate(NNiFCN)is successfully introduced at the out layer of iron hexacyanoferrate(NFFCN)through ion exchange to improve structural stability through compressive stress locking by forming NNiFCN ***,the kinetics of sodium ion diffusion is enhanced through the built-in electric *** electrochemical performance is therefore significantly improved with a remarkable long-term cycling stability over 3,000 cycles at 500 mA·g^(–1) in the full sodium-ion batteries(SIBs)with a maximum energy density of 91.94 Wh·g^(–1),indicating that the core-shell structured NNiFCN/NFFCN could be the low-cost and high-performance cathode for full SIBs in large-scale EES applications.

关键词： mechanical degradation core-shell structure Prussian blue full sodium-ion battery built-in electric field

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Intensity based holographic reconstruction of symmetric and asymmetric object field

Intensity based holographic reconstruction of symmetric and ...

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Biomedical Optics, BIOMED 2012

作者： Gupta, Satya Prakash Nigam, Abhishek Singh, Dhananjay Panigrahi, P.K. Department of Mechanical Engineering Indian Institute of Technology Kanpur 208016 India Materials Science Programme Indian Institute of Technology Kanpur 208016 India Center for Laser Technology Indian Institute of Technology Kanpur 208016 India

The paper reports the performance of intensity based holographic reconstruction approach for characterization of symmetric and asymmetric objects. Silver particles inside cavity represent symmetric object field. Fiber... 详细信息

ISBN: (纸本)9781557529428

关键词： Holography

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Preliminary study on properties of aluminium-silicon (Al-Si) alloys reinforced by in situ titanium diboride (TiB2)

Preliminary study on properties of aluminium-silicon (Al-Si)...

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International Conference on Material science and engineering Technology, ICMSET 2016

作者： Ibrahim, R.E. Rosmamuhamadani, R. Talari, M.K. Yahaya, Sabrina M. Sulaiman, S. Ismail, M.I.S. Materials Technology Programme School of Physics and Materials Science Faculty of Applied Sciences Universiti Teknologi MARA Shah Alam Selangor40450 Malaysia Applied Chemistry Programme School of Chemistry and Environment Faculty of Applied Sciences Universiti Teknologi MARA Shah Alam Selangor40450 Malaysia Mechanical and Manufacturing Department Faculty of Engineering Universiti Putra Malaysia Serdang Selangor43400 Malaysia

ISBN: (纸本)9783035710335

Aluminum-silicon (Al-Si) alloys are an important class of materials, alloys which have great interested in wide industries whether in light or heavy industries, due to their superior properties like high strength to weight ratio, corrosion resistance, and excellent castability. The mechanical strength and the effect of modifying alloys have been studied. To evaluate the strength and revealed the structural of these alloys, the Instron tensile and Shimidzu Vickers hardness tester have been employed while the fracture surfaces have been observed by Scanning electron microscope (SEM). From results obtained, the microstructure of Al-Si with TiB2 has much finer microstructure compared to unfine Al-Si alloy. It showed that the eutectic silicon microstructure in Al-Si alloy changed from needles-look or acicular to fine grain size or globular when the added of TiB2. The mechanical studies showed that the ductility of Al-Si alloy was much lower in the absence of grain refiner, TiB2. The tensile strength of unrefined Al-Si and Al-Si with 6 wt.%TiB2 as grain refinement were recorded 275 and 312 MPa respectively. The hardness value for the unrefined Al-Si alloy also shows less compared with Al-Si with grain refiner, 6 wt.%TiB2, which are 74 and 78 MPa. This showed the results were significant improvements in mechanical properties have been obtained with the use of TiB2 as grain refiner to Al-Si alloy. © 2017 Trans Tech Publications.

关键词： Grain refinement

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Sol-Gel Synthesis and Characterization of BiFeO3-PbTiO3 Thin Films

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MRS Online Proceedings Library 2008年第1期997卷 1-5页

作者： Garg, Ashish Kar, Soumya Dixit, Anju Agrawal, D. C. Department of Materials and Metallurgical Engineering Indian Institute of Technology Kanpur Kanpur India Materials Science Programme Indian Institute of Technology Kanpur Kanpur India

In this work, we report on the synthesis and characterization of thin films of (BiFeO3)1−x (PbTiO3)x (BFPT) solid solutions of compositions around morphotropic phase boundary (MPB) grown on platinized silicon (111) Pt/TiO2/SiO2/Si substrate by sol-gel based spin coating technique. The films were post-annealed at 700 and 750°C for 1 h in air. Morphological analysis of the films was carried out by scanning electron microscopy. Grazing incidence X-ray diffractometry revealed the perovskite structure of the films and peaks suggested the presence of rhombohedral structured pure BFPT phase in polycrystalline form. Scanning electron microscopy suggested that films annealed at 750degC had a denser microstructure as compared to those at 700°C. The room temperature dielectric constant of the films with composition of BF:PT :: 75:25 was measured to be ∼1200 at a frequency of 100 kHz.

关键词： thin film ferroelectric dielectric

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Design of compact rectifying circuit with harmonic rejection filter for RF energy harvesting at 900 MHz

Design of compact rectifying circuit with harmonic rejection...

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Asia-Pacific Conference on Microwave

作者： Sandhya Chandravanshi M. J. Akhtar Department of Materials Science Programme Department of Electrical Engineering Indian Institute of Technology Kanpur India

ISBN: (纸本)9781509015931

A compact rectifying circuit with harmonic rejection filter is designed and fabricated on a low cost FR-4 substrate for operation in the GSM/CDMA 900 band. The dimension for the complete rectifier is 80×45×1.6 mm 3 , which can be considered to be quite compact at 900 MHz. The rectifying circuit consists of the matching network, a diode, and a DC pass filter for rejection of higher order harmonics. The DC pass filter is based on three fan shaped radial stubs in order to block higher order harmonics, and the overall analysis shows an improvement of 19% in efficiency as compared to the circuit without filter. The measured results show the maximum output voltage of 3.4 Volt at 3000 Ω load. The design of rectifying circuit is simple and easy which can be easily integrated for the application of microwave power transmission circuit.

关键词： Power harmonic filters Microwave filters Harmonic analysis Rectifying circuits Microwave circuits Voltage measurement Microwave communication

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WiFi electronic nose for indoor air monitoring

WiFi electronic nose for indoor air monitoring

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2012 9th International Conference on Electrical engineering/Electronics, Computer, Telecommunications and Information Technology, ECTI-CON 2012

作者： Wongchoosuk, Chatchawal Khunarak, Chayanin Lutz, Mario Kerdcharoen, Teerakiat Department of Physics Faculty of Science Kasetsart University Bangkok Thailand Materials Science and Engineering Programme Faculty of Science Mahidol University Bangkok Thailand Department of Physics Center of Nanoscience and Nanotechnology Mahidol University Bangkok Thailand NANOTEC Center of Excellence Mahidol University National Nanotechnology Center Thailand

ISBN: (纸本)9781467320245

Several indoor chemical contaminants such as CO and NO2 are highly toxic. Inhalation of CO or NO2 as low as ppm level may cause respiratory distress or failure. Therefore, detection of indoor air is very important in the industrial, medical, and environmental applications. In this paper, a new electronic nose (E-nose) architecture has been proposed for the real-time quantification and qualification of indoor air contaminations. The metal oxide TGS gas sensors were used as the sensing part. The principal component analysis (PCA) method and a set of mathematical model were employed in data analysis. By combining with the proposed mathematical model, this E-nose can estimate the amount of CO gas contaminations in air at ppm levels. Moreover, the PCA results can clearly show a classification between two different rooms. © 2012 IEEE.

关键词： Electronic nose

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Development of rubber pressure moulding technique to fabricate fiber reinforced plastic components using natural rubber and polyester/epoxy resin

Development of rubber pressure moulding technique to fabrica...

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ANTEC 2004 - Annual Technical Conference Proceedings

作者： Kar, Kamal K. Sharma, Shiv D. Kumar, Prashant Otaigbe, Joshua U. Materials Science Programme Indian Institute of Technology Kanpur-208016 India Department of Mechanical Engineering Indian Institute of Technology Kanpur-208016 India Design Programme Indian Institute of Technology Kanpur-208016 India Department of Mechanical Engineering Massachusetts Inst. of Technology Cambridge MA 02139 United States Department of Polymer Science University of Southern Mississippi Hattiesburg MS 39406-0076 United States

A rubber pressure molding technique is developed to prepare a fiber reinforced plastic (FRP) product. The technique is based on the matching die set, where the die is made of hard metal like steel and the punch from the flexible rubber like material, natural rubber. The use of flexible rubber punch applies hydrostatic pressure on the surface of the product. A split steel die and rubber punch are designed and fabricated to prepare the FRP product. The same split die is also used to cast the rubber punch. Polyester resin does not cure in presence of natural rubber, but epoxy resin cures well. Burn test, coin test and microstructure studies are conducted on the products to find out the void content, presence of delamination and bonding between fiber and resin. The characterization of product is carried out by the mechanical testing like interlaminar fracture toughness, interlaminar shear test and tension test.

关键词： Rubber molding

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Author Correction:Valley-filling instability and critical magnetic field for interaction-enhanced Zeeman response in doped WSe_(2)monolayers

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npj Computational materials 2022年第1期8卷 15-16页

作者： Fengyuan Xuan Su Ying Quek Centre for Advanced 2D Materials National University of Singapore 6 Science Drive 2 Singapore 117546 Singapore Department of Physics National University of Singapore 2 Science Drive 3 Singapore 117551 Singapore NUS Graduate School Integrative Sciences and Engineering Programme National University of Singapore Singapore Singapore Department of Materials Science and Engineering National University of Singapore Singapore Singapore

The original version of the Supplementary Information associated with this Article contained an error in Supplementary Fig.2,in which the equation was incorrect.

关键词： critical Zeeman interaction

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