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Suchbegriff:

electromagnetic*

Chemical Reaction Under Highly Precise Microwave Irradiation

S. Fujii[1], Y. Wada[2]
[1]Chiba University, Chiba, Japan
[2]Tokyo Institute of Technology, Tokyo, Japan

Chemical reactions conducted under microwave irradiation have high reaction rates and high selectivity, but these reaction rates are not always reproducible. To achieve reproducibility, a solid-state microwave source with an ultra precise oscillator, high power amplifier module (HPA), ... Mehr lesen

Simulation of the Electrode-Tissue Interface with Biphasic Pulse Train for Epi-retinal Prosthesis

S. Biswas[1], S. Das[2], M. Mahadevappa[2]
[1]Advanced Technology Development Center, Indian Institute of Technology, Kharagpur
[2]School of Medical Science and Technology, Indian Institute of Technology, Kharagpur

Retinitis Pigmentosa (RP) and Age-related Macular Degeneration (AMD) are diseases causing blindness in a large number of people. In this type of degenerative disease, mostly the photoreceptors are damaged. Thus attempts have been made to electrically stimulate the surviving inner retinal ... Mehr lesen

Simulation of a Capacitive Sensor for Wear Metal Analysis of Industrial Oils

P. Venkateswaran[1], R. Minasamudram[1], P. Agrawal[2]
[1]Siemens Technology and Services Pvt. Ltd, Bangalore, Karnataka, India
[2]Indian Institute of Technology - Bombay, Mumbai, Maharashtra, India

Lubricant oil is used to ensure proper functioning of industrial machinery such as turbines, gears, bearings and compressors. Oil analysis is used to detect and quantify the presence of wear metals and other contaminants in the lubricant of oil wetted systems, by sensing the change in ... Mehr lesen

Application of the Focused Impedance Method (FIM) to Determine the Volume of an Object within a Volume Conductor

M. A. Kadir[1], S. P. Ahmed[2], G. D. Al Quaderi[3], R. Rahman[2], K. Siddique-e Rabbani[1]
[1]Department of Biomedical Physics & Technology, University of Dhaka, Dhaka, Bangladesh
[2]Department of Physics, Jahangirnagar University, Savar, Dhaka, Bangladesh
[3]Department of Physics, University of Dhaka, Dhaka, Bangladesh

Focused Impedance Method (FIM), a new technique of electrical impedance measurement having high sensitivity in the central region, can sense the change in transfer impedance of an object embedded at a shallow depth within a volume conductor of unchanging background conductivity, using ... Mehr lesen

Sensitivity Analysis of Different Models of Piezoresistive Micro Pressure Sensors

S. Meenatchisundaram[1], S. M. Kulkarni[2], S. Bhat
[1]Department of Instrumentation and Control Engineering, Manipal Institute of Technology, Manipal, Karnataka, India.
[2]Department of Mechanical Engineering, National Institute of Technology, Surathkal, Karnataka, India.

Piezoresistive pressure sensors have received much attention over the years because of low cost, simple measurement techniques, etc. There is a challenge in design with respect to appropriate positioning, shape and temperature compensation. Different models of piezoresistive pressure ... Mehr lesen

External Field Induced Flow Patterns in Microscale Multiphase Flows

D. Bandyopadhyay[1], A. Sharma[1], S. Timung[1], V. Tiwari[1], T. K. Mandal[1]
[1]Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India

The study of multiphase flows inside the microfluidic devices has received much attention recently because of its applications in heat and mass transfer, mixing, microreaction, emulsification and most importantly in MEMS and lab-on-a-chip. We study the influence of an electric field on ... Mehr lesen

Coupled RF Thermal Analysis of High Power Couplers for Accelerator Cavities

R. Kumar[1], P. Singh[1]
[1]Bhabha Atomic Research Center, Trombay, Mumbai, India

High-power couplers working at 350 MHz for particle accelerator cavities are presently under development in the LEHIPA project at BARC. It is important to analyze RF losses on conducting surfaces and resulting thermal profiles. COMSOL Multiphysics® is used to study these coupled RF ... Mehr lesen

Finite Element Modeling of Remote Field Eddy Current Phenomenon

T. Jayakumar[1], B. Purnachandra Rao[2], C. K. Mukhopadhyay[3], B. Sasi[2], V. Arjun[5], S. Thirunavukkarasu[2]
[1]Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, TN, India
[2]Nondestructive Evaluation Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, TN, India
[3]EMSI Section, Nondestructive Evaluation Division, Indira Gandhi Centre for Atomic Research, Kalpakkam, TN, India
[5]NDE Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, TN, India

Remote field eddy current (RFEC) technique is a method of detecting defects in ferromagnetic tubes. This is based on low frequency eddy current, which employs an exciter coil and a receiver coil separated by a characteristic distance. The exciter is fed with a low frequency sinusoidal ... Mehr lesen

Cryogenic Magnetic Shield Modeling & Verification

H.J. van Weers[1], C. Bruineman[2], G. Muckus[3]
[1]SRON, Netherlands Institute for Space Research, Utrecht, The Netherlands
[2]Scientec, Utrecht, The Netherlands
[3]University of Utrecht, Utrecht, The Netherlands

In ESA's Cosmic Vision program, the Japanese SPICA satellite is a mission of opportunity in the M-class, with the SAFARI instrument being one of the next generation space-borne astronomy instruments being developed to take advantage of SPICA’s cryogenically cooled 3-m class primary ... Mehr lesen

Fully Coupled FEM Modeling of the Swelling Behavior of Human Intervertebral Disc in Response to a Change in Chemical Environment

G. K. Mistri[1], K. J. Suthar[2]
[1]Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, IL, USA
[2]Advanced Photon Source, Argonne National Laboratory, Argonne, IL, USA

The swelling behavior of human intervertebral disc is strongly influenced by chemical changes in the surrounding environment. Swelling of IVD is governed by various physical phenomena, including chemical and electric potential based transport, electrical charge balance, and swelling due ... Mehr lesen

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