Near-Net Shape Manufacturing of Miniature Spur Gears by Wire Spark Erosion Machining See

This work describes an experimental investigation with the aim to evaluate and establish wire spark erosion machining (WSEM) as a viable alternative for high quality miniature gear manufacturing. External spur type miniature brass (ASTM 858) gears with 12 teeth, 9.8 mm outside diameter&...

Remapping the Indian Postcolonial Canon See

This book critically examines the postcolonial canon, questioning both the disproportionate attention to texts written in English and their overuse in attempts to understand the postcolonial condition. The author addresses the non-representation of Indian literature in theory, and the inadequacy ...

Donor–acceptor phenothiazine functionalized BODIPYs See

A set of unsymmetrical and symmetrical phenothiazine functionalized BODIPYs of type D–A, D–π–A and A–D–A, A–π–D–π–A were synthesized by condensation and Pd-catalyzed Sonogashira cross-coupling reactions. Their photophysical and electrochemical properties were investigated. The electronic absorption spectra shows...

Influence of aspect ratio and surface defect density on hydrothermally grown ZnO nanorods towards amperometric glucose biosensing applications See

In this work, hydrothermally grown ZnO Nanorods Array (ZNA) has been synthesized over Platinum (Pt) coated glass substrate, for biosensing applications. In-situ addition of strong oxidizing agent viz KMnO4 during hydrothermal growth was found to have profound effect on the physical propertie...

Impact of molybdenum out diffusion and interface quality on the performance of sputter grown CZTS based solar cells See

We have investigated the impact of Cu2ZnSnS4-Molybdenum (Mo) interface quality on the performance of sputter-grown Cu2ZnSnS4 (CZTS) solar cell. Thin film CZTS was deposited by sputter deposition technique using stoichiometry quaternary CZTS target. Formation of molybdenum sulphide (MoSx) interfacial l...

PH and Urea Estimation in Urine Samples using Single Fluorophore and Ratiometric Fluorescent Biosensors See

Kidney diseases remain often undiagnosed due to inefficient screening methods available at patient's disposal. Early diagnosis and effective management of kidney problems can best be addressed by the development of biosensors for commonly occurring clinical biomarkers. Here we report the deve...

Structural insight for the recognition of G-quadruplex structure at human c-myc promoter sequence by flavonoid Quercetin See

Small molecule ligands that could stabilize G-quadruplex structure formed at the promoter region of human c-myc oncogene will regulate its expression in cancer cells. Flavonoids, a group of naturally available small molecule, have been known for their various promising effects on human ...

Investigation of heterojunction interface of CIGSe/doped-ZnO for solar cell applications See

In first part of this work the optimization of growth temperature (Tgrowth) of CIGSe thin films deposited on Mo coated sodalime glass substrate has been performed in a single-step route from a single quaternary sputtering target by dual ion beam sputtering (DIBS) syste...

Experimental measurement of spur gear mesh stiffness using digital image correlation technique See

Mesh stiffness is the main cause of gearbox vibration. A crack in the tooth of gear reduces the mesh stiffness. Researchers are trying to evaluate the mesh stiffness of healthy and faulty gears by different techniques and modifying the existing techniques for the purpose of&#x...

Design optimization and accuracy analysis of a planar 2PRP-PRR parallel manipulator See

This paper addresses the dimensional synthesis and design optimization of a three-degree-of-freedom planar U-shape fixed base 2PRP-PRR parallel manipulator to maximize its workspace. Two kinematic design solutions are proposed and their link parameters are optimized to maximize the workspace. Furtherm...

Error modelling and sensitivity analysis of a planar 3-PRP parallel manipulator See

This paper presents an analytical error prediction model of a 3PRP planar parallel manipulator using the screw theory. This analytical approach is used to find the effect of mechanical inaccuracies contributing to the end-effector pose errors and their sensitivity coefficients. Finally, para...

Dual-loop motion control for geometric errors and joint clearances compensation of a planar 2-PRP+1-PPR manipulator See

The existence of geometric errors (misalignment and kinematic errors) and joint clearances is an inherent problem in manipulators. In addition, friction between surfaces and gear backlash errors are unavoidable factors in manipulators using geared motors as their joint actuators. This paper ...

Synthesis of symmetrical and unsymmetrical ferrocenyl substituted disketopyrrolopyrroles See

Ferrocenyl-substituted diketopyrrolopyrroles (DPPs) with the symmetrical π-bridged donor–acceptor (D–π–A) frameworks D′–π–D–A–D–π–D′ as well as unsymmetrical D–A–D–π–D′ frameworks were designed and synthesized by a Pd-catalyzed Sonogashira cross-coupling reaction. The photophysical, computational, and electrochemical properties we...

Triphenylamine derivatives : synthesis, electrochemical, photophysical properties and DFT studies See

In recent years a lot of work has been done in the field of dye-sensitized solar cells (DSSC). Dye-sensitized solar cell is a cost efficient way for light-energy conversion. Triphenylamine based organic dyes (with D–p–A structure) as sensitizer for dye-sensitized solar cells (DSSCs)...

A study on the effect of laser glazing on metal matrix composites fabricated with carbide-boride-nitride reinforcements See

Metal matrix composites (MMCs), offers high strength, fracture toughness and stiffness than those offered by their polymer counterparts. They can withstand elevated temperature in corrosive environment than polymer composites. Most metals and alloys could be used as matrices and they require ...

A study on the tribomechanical properties of oxide-boride-nitride ceramic matrix composite coatings fabricated over substrates with metallic electroplated layer See

Ceramics are widely used in protective applications owing to their high strength and stiffness at high temperature, low density, excellent wear, corrosion and high temperature oxidation resistance. Composites consisting of a ceramic matrix reinforced with ceramic particulates, are potenti...

Weight reduction of heavy commercial vehicle using advanced materials See

The rapidly increasing economic growth leads to advancement in the automotive sector. Concept of road vehicles have changed drastically based in terms of on their design and other functional aspects. Vehicle manufacturers are continuously improving the design of the heavy load carrying ...

Analysis and comparison of noise and vibration of spur gears finished by advanced finishing processes See

Gears are essential elements of various machine and equipment which are used to transmit motion and/or power mechanically and positively with and without change in the direction and/or speed of rotation by the successive engagements of teeth on their periphery. Since gear...

Investigations on the effect of surface plasmon resonance towards performance improvement of hydrothermally grown ZnO/ZnCr2O4 nanostructures based optoelectronic devices See

Oxide semiconductors based nanostructures are an emerging class of materials with great potential for applications in next generation opto-electronic devices. The devices based on nanostructures are very promising for multifunctional applications with high throughput. Nanostructures of variety of semicondu...