Central Glass and Ceramic Research Institute

About: Central Glass and Ceramic Research Institute is a facility organization based out in Kolkata, West Bengal, India. It is known for research contribution in the topics: Microstructure & Sintering. The organization has 1123 authors who have published 2904 publications receiving 51519 citations.

High-Tc superconductor coating on metal substrates by an electrophoretic technique

Abstract: High-Tc superconductor wire and sheet were fabricated by electrophoretic deposition of superconductor powders on silver-metal substrates followed by an appropriate sintering schedule. The technique has some promise for technological applications.

Excess conductivity and thermally activated dissipation studies in Bi2Sr2Ca1Cu2Ox single crystals

Abstract: The resistivity of Bi 2 Sr 2 Ca 1 Cu 2 O x single crystals has been measured in the ab -plane and along the c -axis. In all the directions the resistivity shows metallic behavior in the normal state. Room temperature resistivity along the c -direction is about 64 times higher than that in the ab -plane. Departure from the linear behavior occurs at 96 K and the zero resistance is obtained at 76 K. Excess conductivity analysis shows that the system is 2-dimensional in the temperature range 78.7–96 K and a 3-dimensional one below 78.7 K. Thus, a crossover from 2D to 3D is observed at 78.7 K in the Bi-2212 single crystal. This crossover was not detected in Bi 2212 or 2223 polycrystalline samples. The width of the transition (Δ T ) varies with the application of magnetic field ( H ) as H 0.85 in Bi 2212 single crystal. The pinning potential ( U 0 ) varies as H -α where α =0.3 for the Bi-2212 single crystal and 0.47 for polycrystalline sample.

Enhanced bone regeneration with carbon nanotube reinforced hydroxyapatite in animal model

Abstract: In order to improve the inherently poor mechanical properties of hydroxyapatite (HAp) and to increase its feasibility as load bearing implant material, in the present investigation, functionalised (HFC1 and HFC2) and non-functionalized (HC1 and HC2) multi-walled carbon nanotubes were used as reinforcing material with HAp. Significant improvement with respect to fracture toughness, flexural strength and impact strength of the composites was noticed. In vitro biological properties of HAp-carbon nanotube (CNT) biocomposites have also favored uniform and systematic apatite growth on their surface. Subsequently, in vivo osseous ingrowth at bone defect of rabbit femur was evaluated and compared using radiology, push out test, fluorochrome labeling, histology and scanning electron microscopy after 2 and 4 months respectively. The results demonstrated growth of web like soft callus from the host bone towards the implant, ensuring strong host bone interaction. Toxicological studies of the liver and kidney cells exhibited no abnormality, thereby confirming non-toxicity of the CNT in the animal body. Host-implant biomechanical strength showed high interfacial strength of the composites, indicating their high potentials to be used for bone remodeling applications.