Effect of Radiation of Moon on the physical property of Jalkhumbhi (Water hyacinth) Bhasma as a functional nanomaterials for its applications as medicine and in other areas of Science & Technology

Jalkhumbhi Bhasma as Nanomaterials is prepared using ecofriendly green approach in Pushya nakshtra and Rohini nakshtra. The crystal structure was evaluated, using modern scientific tools. X-ray diffaraction measurement shows that crystalline size and lattice constant of Jalkhumbhi bhasma prepared in Push and Rohini nakshtra were found, 26.62 nm and 54.55 nm and lattice constant 6.312A, 6.301A and respectively. This reveals the effect of radiation of moon alter the crystal structure. The Fourier transform infrared spectroscopy(FTIR) measurement shows functional group present in the materials are of the compound of K, Cl, C-Cl, NH2, C-O-C, C=O, Ca, and Ca(OH)2 respectively. The magnitude of force constant between the atoms are 2.51307 N/cm, 4.16005 N/cm and 2.61932 N/cm, 4.20074 N/cm respectively in both the nakshtras, which measure the interatomic strength. The photoluminescence spectra (PL) reveals that the broad emission of radiation spectrum from both the materials lie in the visible region, showing broad blue emission. The energy band gap value for the most significant intense peak corresponding to 481 nm (2.55 eV) corresponding to 350 nm excitation of radiation and 501 nm (2.475 eV) for 370 nm. The optical property shows that prepared Jalkhambhibhasma may be useful as semiconductor electronics nanomaterials, which were prepared using eco-friendly approach. This may open a new window for material science and pharmaceutical sectar for the production of such materials for electronic based industries, in addition, to using as an evidence based medicine. The effect of natural radiation of moon changes the crystal structure and properties of materials, which are beneficial for health as well as in other areas of science and technology due to its crystalline size and optical properties.

Statistical model of phonon scattering on rough boundaries of nanostructures

Because of the rapid development of semiconductor electronics and the tendency to size reduction of the elements of transistors, there is an urgent task of assessing the heat transfer regime, which determines the ability to maintain the required thermal regime. In this work, the heat transfer in micro- and nanostructures in silicon is considered, and a comprehensive analysis of factors determining the heat transfer regime is carried out. In particular, the effect of the interaction of phonons with the sample boundaries in the quasi-ballistic and ballistic heat transfer regimes, where these processes play a decisive role, is evaluated using statistical model of phonon scattering on rough boundaries of samples.

A Novel Route towards Sustainable Synthesis of Graphene

Graphene is a wonder material having diverse, unique properties. It is used in many applications spanning from optoelectronics to tailored semiconductor electronics. There exist many routes of synthesis for this material. Amid them, exfoliation is generally preferred. In this report, an unconventional route of exfoliation is executed. Here, graphene is exfoliated from the used mosquito repellent rods, and correspondingly, its properties are studied. Accordingly, the attained yields are characterized through Raman Spectroscopy and FTIR. It is observed a good match of the as-exfoliated graphene with that of the pure sample. The reported synthesis results in a higher yield with immense potential to be implemented in mass production by better controlling surfactants.

The effect of water on colloidal quantum dot solar cells

Almost all surfaces sensitive to the ambient environment are covered by water, whereas the impacts of water on surface-dominated colloidal quantum dot (CQD) semiconductor electronics have rarely been explored. Here, strongly hydrogen-bonded water on hydroxylated lead sulfide (PbS) CQD is identified. The water could pilot the thermally induced evolution of surface chemical environment, which significantly influences the nanostructures, carrier dynamics, and trap behaviors in CQD solar cells. The aggravation of surface hydroxylation and water adsorption triggers epitaxial CQD fusion during device fabrication under humid ambient, giving rise to the inter-band traps and deficiency in solar cells. To address this problem, meniscus-guided-coating technique is introduced to achieve dense-packed CQD solids and extrude ambient water, improving device performance and thermal stability. Our works not only elucidate the water involved PbS CQD surface chemistry, but may also achieve a comprehensive understanding of the impact of ambient water on CQD based electronics.

SOME RELIABILITY ASPECTS OF MEMS AND NEMS MANUFACTURING

A full understanding of the physics and statistics of the defect generation is required to investigate the ultimate reliability limitations of manufacturability of MEMS and NEMS. In order that the user can include electronic components in circuits to achieve errorfree and reliable functional units, assemblies or devices, must he has understood the mode of operation of these components. Only knowledge of their parameters and special properties allows, according to data sheet specifications and manufacturer's documents the optimal components for a specific application, to select. Both for the analysis of electronic circuits and for circuit dimensioning are knowledge of the structure and function of the used components of semiconductor electronics absolutely necessary.