Nanoscience & Nanotechnology-Asia - Volume 10, Issue 4, 2020

All optical tri-state frequency encoded logic gates NOT and NAND are proposed and numerically investigated using TOAD based interferometric switch for the first time to the best of our knowledge. The optical power spectrum, extinction ratio, contrast ration, and amplified spontaneous noise are calculated to analyze and confirm practical feasibility of the gates. The proposed device works for low switching energy and h Read More

Introduction: The objective of this study was to formulate water-insoluble drug Itraconazole (ITZ) into Solid Lipid Nanoparticles (SLNs) for topical delivery. Methods: The drug-loaded SLNs were prepared by Microemulsion method using cholesterol (CH) and Lubritab (LU) and further characterized for different parameters like particle size, zeta potential, drug entrapment efficiency etc. The mean particle size with Lubri Read More

Objective: The objective of the present studies was to develop and evaluate curcumin loaded NLCs for management of childhood dermatitis by exploiting its antimicrobial and anti-infective properties and increasing its skin deposition. Methods: The screened lipidic excipients (on solubility basis) were used to formulate NLC dispersion by solvent injection technique and process variables were optimized. Central composite de Read More

Background: The objective of this study was to develop solid lipid nanoparticles (SLNs) of poorly water soluble anti-hyperlipidemic drugs-Ezetimibe in combination with Simvastatin. Methods: This study describes a 32 full factorial experimental design to optimize the formulation of drug loaded lipid nanoparticles (SLN) by the high speed homogenization technique. The independent variables amount of lipid (GMS) and amount of s Read More

Objective: In this proposed work, the Analog, RF and Linearity performances of a DGMOSFET have been analyzed by considering InAs as a channel material. Methods: For the very first time, gate stack techniques in this device have been incorporated and a comparative analysis is conducted with respect to SiO2 oxide layer. The variations in different patterns of oxide layer and their comparison have been thoroughly investigat Read More

Background: In this article, photonic extinction performance of Metal Dielectric Semiconductor (MDS) nanostructure has been improved by noble metallic nanosphere such as gold, silver and copper into various wideband dielectrics like silicon di-oxide, aluminum oxide and silicon nitride. Methods: Presently, Plasmonics gives very much interest and closely involves in the main domains of nanophotonics that can control of Read More

Background: The stringent technological constraints imposed by the requirement of ultra-sharp doping profiles associated with the sub-30 nm regime has led to the search for alternatives to the conventional Metal Oxide Semiconductor (MOS) Field Effect Transistor (FET). An obvious alternative is a device whose architecture does not have any junctions in the sourcechannel- drain path. One such device is the Junctionl Read More

Background: In nano and microelectronics, device performance enhancement is limited by downscaling. Introduction of intentional mechanical stress is a potential mobility booster to overcome these limitations. This paper explores the key design challenges of stress-engineered FinFETs based on the epitaxial SiGe S/D at 7 nm Technology node. Objective: To study the mechanical stress evolution in a tri-gate FinFET at 7 n Read More

Aims: In this work, a Junction-Less Double Gate MOSFET (JLDG MOSFET) based CMOS inverter circuit is proposed for ultra-low power applications in the near and sub-threshold regime operations. Background: D.C. performances like power, delay and voltage swing of the proposed Inverter have been modeled analytically and analyzed in depth. JLDG MOSFET has promising features to reduce the short-channel effects compared to Read More

Background: In recent years, there has been a high demand for executing digital signal processing and machine learning applications on energy-constrained devices. Squaring is a vital arithmetic operation used in such applications. Hence, improving the energy efficiency of squaring is crucial. Objective: In this paper, a novel approximation method based on piecewise linear segmentation of the square function is proposed. Met Read More

Objective: This paper presents a multi-objective design optimization of MEMS disk resonator using two techniques. Methods: Determining the optimized dimensions of disk resonator for a particular resonance frequency so as to achieve higher quality factor and lower motional resistance is attempted. One technique used is constraint-based multi-objective optimization using the interior-point algorithm. The second technique Read More

Objective: In this paper, a novel third order sinusoidal oscillator based on current controlled differential difference current conveyor transconductance amplifier (CCDDCCTA) is proposed. Methods: The proposed circuit configuration consist of single CCDDCCTA, two grounded resistor and three capacitors. It can concurrently yield output voltage and current. The amplitude of output current can be easily tuned Read More

Background: A microprocessor is a general-purpose device, which works on the user defined instructions. The design of next generation microprocessors demands high speed, high density and low power requirements that can be attained by prominent device like Single Electron Transistor (SET). Methods: Based on realizable SET parameters at room temperature and 800 mV operating voltage; an 8-bit SET based Read More

Aims: The potentiality of Multiple Quantum Well (MQW) Impacts Avalanche Transit Time (IMPATT) diodes based on Si~3C-SiC heterostructures as possible terahertz radiators have been explored in this paper. Objective: The static, high frequency and noise performance of MQW devices operating at 94, 140, and 220 GHz atmospheric window frequencies, as well as 0.30 and 0.50 THz frequency bands, have been studied i Read More

Background: There has been an increasing curiosity over the past few years to carry out organic reactions over heterogeneous nanocatalysts. Microwave activation coupled with a nanocatalyst along with water as a reaction medium makes the process further green. Microwave activation as a green process reduces reaction times, enhances product purity and improves chemical yield. Methods: Nitrile group chemistry has Read More

Background: Cockleshell-derived aragonite calcium carbonate nanoparticles were prepared by the top-down approach for combine delivery of two types of drugs. Objective: The aim of this study was to synthesize and characterize thymoquinone-doxorubicin loaded cockle shell-derived aragonite calcium carbonate nanoparticle. Aragonite calcium carbonate nanoparticles encapsulating thymoquinone and doxorubicin alone were al Read More

Background: The advancement of VLSI in the application of emerging nanotechnology explores quantum-dot cellular automata (QCA) which has got wide acceptance owing to its ultra-high operating speed, extremely low power dissipation with a considerable reduction in feature size. The QCA architectures are emerging as a potential alternative to the conventional complementary metal oxide semiconductor (CMOS) techn Read More

Background: This study aims to study the mixing of graphite with water irradiated by X-ray (low energy gamma ray) towards the formation of graphene oxide (GO). Methods: The graphite is obtained from Zinc-Carbon (ZnC) battery wastes. This is a simple alternative technique in synthesizing GO based on X-ray irradiation without involving additional chemicals. X-ray irradiation is conducted upon 10 ml of distilled w Read More