NOPR Collection:

Design and analysis of SOI and SELBOX junctionless FinFET at sub-15 nm technology node

2021-02-05T06:36:03Z

Title: Design and analysis of SOI and SELBOX junctionless FinFET at sub-15 nm technology node Authors: Singh, Satya Prakash; Akram, Md Waseem Abstract: The structural and operational characteristics of a silicon on insulator (SOI) junctionless (JL) FinFET have been compared with the selective buried oxide (SELBOX) JL FinFET for 15 nm gate length and beyond using simulation studies. Simulations have been performed using silvaco TCAD (Atlas 3-D Module). SELBOX JL FinFET device has shown ~10 times improvement in I_ON/I_OFFratio with respect to the SOI JL FinFET. The SELBOX based device has subthreshold slope (SS) value of 69.08 mV/Dec whereas this is 84.1 mV/Dec for SOI based device. SELBOX JL FinFET has DIBL value of 31.57 mV/V whereas this is 119 mV/V for SOI JL FinFET. The comparison results, discussed, are for the channel length (gate length) of 15 nm. Furthermore, short-channel characteristics for the n-channel and p-channel SELBOX JL FinFET have been discussed. For channel length of 5 nm (which is a future technology node for mass production of semiconductor devices and systems), SELBOX device has shown favourable value of I_ON/I_OFF ratio as 10⁶ and SS as 96.86 mV/Dec. SELBOX JL FinFET has shown more immunity towards self-heating effect compared to the SOI JL FinFET. Performance of the SELBOX JL FinFET can be enhanced further independently by tuning various parameters such as the buried oxide thickness, the gap between buried oxide layers, substrate doping, and substrate bias. Page(s): 969-975

Ultra-violet responsive photocatalytic application of CuO/Bi oxide nitrate hydroxide hydrate powder

2021-02-05T06:30:46Z

Title: Ultra-violet responsive photocatalytic application of CuO/Bi oxide nitrate hydroxide hydrate powder Authors: Vučić, Miljana Radović; Mitrović, Jelena; Kostić, Miloš; Velinov, Nena; Petrović, Milica; Bojić, Danijela; Bojić, Aleksandar Abstract: A new photocatalyst CuO/Bi oxide nitrate hydroxide hydrate (C-BONH) has been synthesized by hydrothermal method. The obtained product has been characterized using x-rays diffraction (XRD), fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The surface area has been measured by Brunauer-Emmett-Teller (BET) method, and it has been found 4.42 m² g^–1. The photocatalytic activity has been evaluated by removal of reactive blue 19 (RB 19) dye, where total decolorization has been achieved in less than 15 minutes. The photocatalytic process is described with four kinetic models (Langmuir‒Hinshelwood model, pseudo-first order kinetic model, pseudo-second order kinetic model and Chrastil diffusion model). Langmuir‒Hinshelwood kinetic model and pseudo-first order kinetic model the best describe the photocatalytic process. Chrastil diffusion model has been shown that diffusion has not any influence on the process. The chemical oxygen demand (COD) has been decreased from 28.1 to 6.82 mg dm^–3within 180 minusing UV light (254 nm wavelength). It has been observed that photocatalyst retained its stability and activity even after five cycles, which could significantly reduce the operation cost in practical applications. Page(s): 976-983

Performance analysis of 80 channels hybrid optical time division dense multiplexing system with the support of different orthogonal modulation techniques

2021-02-05T06:27:37Z

Title: Performance analysis of 80 channels hybrid optical time division dense multiplexing system with the support of different orthogonal modulation techniques Authors: Kumar, Ghanendra; Kumar, Chakresh; Kumar, Sandeep Abstract: High spectral transmission capacity signals are the prime requirement of today’s dense communication system to enhance the quality of different users services, which have been analyzed and resolved with the support of 80 channels hybrid optical time division dense multiplexing system with different orthogonal modulation techniques (return to zero (RZ), differential quadrature phase shift keying (DQPSK), non-return-to-zero (NRZ), polarization shift keying (PoISK), and differential phase shift keying (DPSK)). Further, evaluation has also been proceeded to receive the best rating results in terms of bit error rate (BER) and quality factor (38 dB to 20 dB) with attainable rating power amplification from Erbium-Doped fiber amplifier (EDFA). Furthermore, final examine has recommended that orthogonal DPSK modulation is the best choice to attain the data rate of 1.80 Tbps from the recommended system for 200 km optical communication with acceptable rating from 10^-24to 10^-10. Page(s): 984-989

Preparation of alternative raw materials for resource development to use in Indian ferro alloy and steel industrial applications

2021-02-05T06:25:23Z

Title: Preparation of alternative raw materials for resource development to use in Indian ferro alloy and steel industrial applications Authors: Srikant, Satya Sai; Rao, Raghupatruni Bhima Abstract: The present paper deals mainly with iron bearing titania enriched ilmenite raw mineral, its production, exports and imports and consumption of Ferro alloy industries. This paper not only reveals the recovery of iron from iron bearing titania mineral ilmenite with physical beneficiation methods but also gives the process of preparation and separation of titania slag and iron metal by using microwave heat treatment. The process of recovery of iron as a by-product from ilmenite mineral, which abundantly available along the coastal line of India, is economical and by which the conservation of some higher grade iron ores of the country will be possible for future. The products obtained from this process can be treated as alternative raw materials resources for steel and iron making industries. Page(s): 990-995