There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality.

Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

I and i

Elements Of X Ray Diffraction

https://cyberleninka.org/article/n/768408.pdf

Mechanical properties of graphene and graphene-based nanocomposites

Large-Scale Fabrication of Boron Nitride Nanosheets and Their Utilization in Polymeric Composites with Improved Thermal and Mechanical Properties

A review on carbon nanotubes and graphene as fillers in reinforced polymer nanocomposites

MnO2 doped polyaniline (PANI) grafted on 3D CNTs/graphene was fabricated using basic in situ redox deposition. The HRTEM and FESEM studies validate that MnO2 doped polyaniline (PANI) can be efficiently coated over the surface of CNTs/graphene. The incorporation of MnO2 in polyaniline well depicted by elemental mapping. The electrochemical studies showed that maximum specific capacitance of 1360 Fg−1 at 5 mV s−1 scan rate was achieved for the MnO2 doped PANI/CNTs/graphene composite, which was nearly 30% higher than 1160 Fg−1 of MnO2 doped PANI /CNTs and 50% more than the 600 Fg−1 of MnO2 doped PANI composite. Moreover, this composite provided a good cycling stability of 82% after 5000 cycles with mentionable capacitance retention. The incredible electrochemical performance is accredited mainly to the porous hierarchical architecture, which consisted of interconnected MnO2 doped PANI uniformly coated over the CNTs/graphene carbon framework.

Superior architecture and electrochemical performance of MnO 2 doped PANI/CNT graphene fastened composite

Improving the fluid flow and heat transfer characteristics of a heat exchanger has always been desired for any heat transferring application. Various active, passive, and combined methods were adop...

Numerical simulation of flow-through heat exchanger having helical flow passage using high order accurate solution dependent weighted least square based gradient calculations

The authors decribe an ultra-sensitive, room temperature, flexible transparent LPG sensor based on the use of a CdO/graphene nanocomposite. The graphene prevents the accumulation of CdO, enhances the surface area, and acts as a gas sensing material. FESEM images show a uniform decoration of CdO nanoparticles on graphene. The CdO/graphene composite was deposited as a film on interdigitated electrodes (IDEs) which then were used for chemiresistive sensing of liquid petroleum gas (LPG) by using a four probe technique. A Resistivity decreases significantly upon exposure to a LPG. The electrical resistance measurement at a constant bias voltage of 0.5 V. The sensor of type CdO/graphene (1 wt.%) exhibits a sensitivity of 600 ppm of LPG at 27 °C. It is a highly selective, stable and sensitive to low concentration of LPG even at room temperature.

Kishor Kumar Sadasivuni

Papers

Superior architecture and electrochemical performance of MnO 2 doped PANI/CNT graphene fastened composite

Numerical simulation of flow-through heat exchanger having helical flow passage using high order accurate solution dependent weighted least square based gradient calculations

Resistive room temperature LPG sensor based on a graphene/CdO nanocomposite

Smart Polymer Nanocomposites

Effect of phosphorus on controlling and enhancing electrocatalytic performance of Ni–P–TiO2–MnO2 coatings