A5000223091- Advanced Combustion Engine Technologies
- Innovative Microfluidic and Catalytic Techniques Innovation
- Rheology and Fluid Dynamics Studies
- Polymer crystallization and properties
- Biodiesel Production and Applications
- Combustion and flame dynamics
- Hydrogen embrittlement and corrosion behaviors in metals
- Microfluidic and Capillary Electrophoresis Applications
- Fluid Dynamics and Thin Films
- Food Drying and Modeling
- Organic Electronics and Photovoltaics
- Heat Transfer Mechanisms
- Fluid Dynamics and Turbulent Flows
- Vehicle emissions and performance
- Heat Transfer and Optimization
- Microfluidic and Bio-sensing Technologies
- Advanced machining processes and optimization
- Greenhouse Technology and Climate Control
- Fluid Dynamics and Heat Transfer
- Advanced Surface Polishing Techniques
- Heat Transfer and Boiling Studies
- Nanofabrication and Lithography Techniques
- Titanium Alloys Microstructure and Properties
- Advanced Sensor and Energy Harvesting Materials
- Advanced Machining and Optimization Techniques
Fistulacure
2024-2025
National Institute of Technology Warangal
2015-2023
Central Manufacturing Technology Institute
2012-2022
Maharaj Vijayaram Gajapathi Raj College of Engineering
2018
Indian Institute of Technology Hyderabad
2017
Research Centre Imarat
2017
Addis Ababa University
2016
Indian Institute of Technology Indore
2009
Indira Gandhi Centre for Atomic Research
1995-2008
Indian Institute of Technology Kharagpur
2008
Electronic systems that use rugged lightweight plastics potentially offer attractive characteristics (low-cost processing, mechanical flexibility, large area coverage, etc.) are not easily achieved with established silicon technologies. This paper summarizes work demonstrates many of these in a realistic system: organic active matrix backplane circuits (256 transistors) for ( approximately 5 x 5-inch) mechanically flexible sheets electronic paper, an emerging type display. The success this...
A printed field-effect transistor (FET) is reported, in which all the essential components are screen-printed for first time. This has a polyimide dielectric layer, regioregular poly(3-alkythiophene) semiconducting and two silver electrodes, of on an ITO-coated plastic substrate.
Due to higher prices and shortages of fossil fuels reduce the fuel consumption used in drying process, more importance is given solar energy sources as it freely available. For these purposes, an indirect type dryer was designed developed dry agricultural products. Solar consists flat plate air collector with V-corrugated absorption plates, insulated chamber, chimney for exhaust air. The total area collectors 2 m2. size cabinet 1 m × 0.4 (width, depth, height). An experiment conducted study...
The fabrication and characteristics of organic smart pixels are described. pixel reported in this letter consists a single thin-film field effect transistor (FET) monolithically integrated with an light-emitting diode. FET active material is regioregular polythiophene. maximum optical power emitted by the about 300 nW/cm2 corresponding to luminance ∼2300 cd/m2.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTConcentration and molecular weight dependence of viscoelastic properties in linear star polymersV. R. Raju, E. V. Menezes, G. Marin, W. Graessley, L. J. FettersCite this: Macromolecules 1981, 14, 6, 1668–1676Publication Date (Print):November 1, 1981Publication History Published online1 May 2002Published inissue 1 November 1981https://pubs.acs.org/doi/10.1021/ma50007a011https://doi.org/10.1021/ma50007a011research-articleACS PublicationsRequest reuse...
Abstract The dynamic moduli G′ (ω) and G″ for two groups of linear polyethylene fractions (reported M w / n < 1.2) were measured in the melt state using eccentric rotating disk method. Values zero shear viscosity η 0 obtained compared with published results on similar fractions. Molecular weight data converted to a common basis through intrinsic viscosities trichlorobenzene (TCB) at 135°C. With recent (light scattering) vs. [η] TCB , polyethylene, relationship 190°C, = 3.40 × 10 −14 ( )...
Abstract Three methods for hydrogenating anionically prepared polybutadiene (containing about 8% vinyl double bonds) were investigated: homogeneous catalysis (alkylated transition metal salts), heterogeneous (nickel on kieselguhr; paladium calcium carbonate), and stoichiometric reaction with in situ generated diimide. The products characterized by intrinsic viscosity, gel permeation chromatography, infrared spectroscopy, melt viscosity. Only the catalysts found to yield completely...
Abstract Some results on the melt rheology of hydrogenated polybutadiene (HPB) with narrow‐molecular‐weight distribution are reported and compared corresponding properties precursor polybutadienes (PBD) fractions linear polyethylene (PE). In samples dynamic moduli obeyed frequency‐temperature superposition. The relationship between viscosity intrinsic at 190°C for HPB was indistinguishable from that PE, but their flow activation energies were slightly different ( E a = 7.2 kcal 6.4 PE). Like...
This letter describes the use of micromolding in capillaries combination with screen printing to form organic microstructures for applications microelectronics. Fabrication plastic transistors micron feature sizes demonstrates approach. The performance these compares favorably that similar devices constructed using conventional methods and inorganic substrates, dielectrics, conductors.
Abstract Some results are reported on the linear viscoelastic properties of polybutadienes with narrow‐molecular‐weight distributions. The zero shear viscosity η 0 varies as M 3.4 in samples, and enhancement is found star‐branched samples long arms, good agreement earlier by Kraus Gruver. temperature coefficient appears to be slightly larger stars when arms become long. steady state recoverable compliance J 2.1 × 10 −7 cm 2 /dyn high molecular weight, but it increases values much times...
Energy and exergy analysis, in the thermodynamics, is an important tool used to predict performance of drying system. In this work, energy analyses are made during process banana using indirect type passive solar dryer. Solar flat plate air collector heat air. Banana gets sufficiently dried at temperatures between 28 82 °C. radiation measured it ranged from 335 1210 W/m2. Using first law analysis was carried out estimate amounts gained heater. Also, applying second determine losses process....
We report the characteristics of complementary organic ring oscillators. The shortest delay time measured is 38 μs per stage that corresponds to a 2.63 kHz oscillation frequency. active material in n-channel transistors copper hexadecafluorophthalocyanine and p-channel an oligothiophene/oligothiophene derivative.
The fast reduction of fossil fuels is making it imperative to search for renewable be used in the IC engines. use alcohols as fuel CI engines either directly or blends diesel requires some modification engine operating parameters minimize emissions without affecting performance. Among different parameters, Compression ratio (CR) and Fuel injection pressure (FIP) strongly affect performance characteristics engine. In this paper, influence CR FIP on combustion, emission a fuelled with...
An abrupt loss of adhesion at interfaces between epoxy and inorganic substrates has been shown to occur whenever the is equilibrated in air whose relative humidity exceeds a critical value. We report that marking onset associated with (1) sudden increase water solubility epoxy, (2) corresponding volume (3) strong decrease mobility absorbed water. Possible mechanisms such as capillary condensation, osmotic cell formation, glass transition temperature induced by are ruled out on basis...
A numerical model for simultaneous heat and mass transfer was developed solar drying of spherical objects the object considered is green peas. Solar collector outlet temperature assumed as chamber justified through energy balance equations. Assumptions are imposed on governing equations without losing physics problem. Discretization performed by finite difference method with implicit scheme. To generalize, equation boundary conditions non-dimensionalized. The set solved Tridiagonal Matrix...
Abstract Background Post‐tuberculosis lung abnormality (PTLA) is the most common risk factor for developing chronic pulmonary aspergillosis (CPA). However, prevalence and incidence of CPA in PTLA patients India remain unknown. Objectives We aimed to ascertain subjects with PTLA. Methods identified a cohort tuberculosis who completed anti‐tuberculosis therapy (ATT) before November 2019 from records 12 treatment centers attached national program. recorded clinical demographic details....