ترجمه مقاله نقش ضروری ارتباطات 6G با چشم انداز صنعت 4.0
- مبلغ: ۸۶,۰۰۰ تومان
ترجمه مقاله پایداری توسعه شهری، تعدیل ساختار صنعتی و کارایی کاربری زمین
- مبلغ: ۹۱,۰۰۰ تومان
1 . Introduction
Graphene has drawn a huge research interest in the past several years due to its extraordinary material properties [1] including remarkably high charge carrier mobility of 200 000 cm 2 V −1 s −1 in suspended form, [2] very high surface to volume ratio due to its essentially two-dimensional (2D) nature, [3] and very low Johnson noise in the limit of no charge carriers. [3–5] These properties make graphene very attractive for molecular sensing applications, since the adsorbed molecules can readily affect its conductivity through charge transfer. [3] Demonstration of its ultra-high sensitivity, down Tunable Reverse-Biased Graphene/Silicon Heterojunction Schottky Diode Sensor Amol Singh ,* Md. Ahsan Uddin , Tangali Sudarshan , and Goutam Koley to a single gas molecule, [3] has generated widespread interest in its potential application for molecular detection based on changes in conductance, [3,6,7] surface work function, [6] frequency of the surface acoustic waves, [8] as well as low frequency noise spectra. [7,9]
4 . Experimental Section
Graphene samples used in this work were synthesized through chemical vapor deposition (CVD) on Cu (catalyst) foils (Alfa Aesar, 99.999% purity) in a quartz tube furnace. The synthesis was performed at 1035 °C and 10 Torr pressure with CH 4 as the precursor (nominal fl ow rate of 40 sccm) along with H 2 (nominal fl ow rate 50 sccm), following earlier reports. [35,36]
4. بخش آزمایشی
نمونه های گرافن مورد استفاده در این کار با روش رسوب شیمیایی بخار (CVD) روی فویل مسی ( کاتالیست) با خلوص%99/99 در یک کوره ی لوله کوارتز سنتز شد. سنتز در دمای 1035 درجه سانتیگراد و در فشار 10 تور با CH4 به عنوان پیش ماده (با نرخ جریان اسمی Sccm 40) با H2 (با نرخ جریان اسمی Sccm 50) طبق گزارش های قبلی انجام شد.