Humidity sensor using surface adsorbed channel modulated GrapheneNanoribbon : NEGF approach

Humidity sensor using surface adsorbed channel modulated GrapheneNanoribbon : NEGF approach

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This thesis report is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2014.

Bibliographische Detailangaben
Hauptverfasser: Shakil, Shifur Rahman, Fatema Tuz Zohra, Pramanik, Parna, Tushar, Raihanul Islam
Weitere Verfasser: Bhuian, Dr. Md. Belal Hossain
Format: Abschlussarbeit
Sprache:English
Veröffentlicht: BRAC University 2014
Schlagworte:
Electrical and electronic engineering
Graphene Nanoribbon
Non-equilibrium Green’s Function
Online Zugang:http://hdl.handle.net/10361/3625
id 10361-3625
record_format dspace
spelling 10361-36252019-09-30T04:16:30Z Humidity sensor using surface adsorbed channel modulated GrapheneNanoribbon : NEGF approach Shakil, Shifur Rahman Fatema Tuz Zohra Pramanik, Parna Tushar, Raihanul Islam Bhuian, Dr. Md. Belal Hossain Department of Electrical and Electronic Engineering, BRAC University Electrical and electronic engineering Graphene Nanoribbon Non-equilibrium Green’s Function This thesis report is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2014. Cataloged from PDF version of thesis report. Includes bibliographical references (page 49). Flexible, highly sensitive and low cost humidity sensors are highly enviable in future generation sensor technology. As a result of recent year’s research conducted concerning the applicability in gas and humidity sensors, graphene is reported to be an appropriate sensing material for this purpose. The inimitable structural, mechanical and electronic properties of graphene has attracted extensive attention of scientists, therefore the successful synthesis of novel two-dimensional (2D) graphene and the experimental observation of Dirac fermions in unpatterned graphene devices has been increasing rapidly. This thesis describes simulation based study of humidity sensing ability of patterned graphene adsorbing vapour (H2O) and investigate electronic and quantum transport properties of these system such as Device Density of States ( DDOS ), Electrostatic Effective Potential (EDP), Conductivity (G) and Current-Voltage (I-V) characteristics. Transport simulation is based on Non-equilibrium Green’s Function (NEGF) formalism. In our thesis, we have considered three cases such as semiconducting grapheme nanoribbon (N=10), metallic grapheme nanoribbon (N=11) and cascade hetero-graphene nanoribbon, where sensing medium is semiconducting GNR (N=10) and contact is metallic GNR (N=11) to realize the effect of H2O adsorption on it. We have calculated the highest number of H2O molecules that can be absorbed on corresponding to the area of GNR to get maximum current. Later on we propose a simple schematic model to characterize device performance which incorporates the effect of metal contact resistance with GNR. Shifur Rahman Shakil, Fatema Tuz Zohra, Parna Pramanik, Raihanul Islam Tushar B. Electrical and Electronic Engineering 2014-09-14T11:03:52Z 2014-09-14T11:03:52Z 2014 2014-08 Thesis ID 11121047 ID 11121096 ID 11121002 ID 11121034 http://hdl.handle.net/10361/3625 en BRAC University Internship reports are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. 50 pages application/pdf BRAC University
institution Brac University
collection Institutional Repository
language English
topic Electrical and electronic engineering
Graphene Nanoribbon
Non-equilibrium Green’s Function
spellingShingle Electrical and electronic engineering
Graphene Nanoribbon
Non-equilibrium Green’s Function
Shakil, Shifur Rahman
Fatema Tuz Zohra
Pramanik, Parna
Tushar, Raihanul Islam
Humidity sensor using surface adsorbed channel modulated GrapheneNanoribbon : NEGF approach
description This thesis report is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2014.
author2 Bhuian, Dr. Md. Belal Hossain
author_facet Bhuian, Dr. Md. Belal Hossain
Shakil, Shifur Rahman
Fatema Tuz Zohra
Pramanik, Parna
Tushar, Raihanul Islam
format Thesis
author Shakil, Shifur Rahman
Fatema Tuz Zohra
Pramanik, Parna
Tushar, Raihanul Islam
author_sort Shakil, Shifur Rahman
title Humidity sensor using surface adsorbed channel modulated GrapheneNanoribbon : NEGF approach
title_short Humidity sensor using surface adsorbed channel modulated GrapheneNanoribbon : NEGF approach
title_full Humidity sensor using surface adsorbed channel modulated GrapheneNanoribbon : NEGF approach
title_fullStr Humidity sensor using surface adsorbed channel modulated GrapheneNanoribbon : NEGF approach
title_full_unstemmed Humidity sensor using surface adsorbed channel modulated GrapheneNanoribbon : NEGF approach
title_sort humidity sensor using surface adsorbed channel modulated graphenenanoribbon : negf approach
publisher BRAC University
publishDate 2014
url http://hdl.handle.net/10361/3625
work_keys_str_mv AT shakilshifurrahman humiditysensorusingsurfaceadsorbedchannelmodulatedgraphenenanoribbonnegfapproach
AT fatematuzzohra humiditysensorusingsurfaceadsorbedchannelmodulatedgraphenenanoribbonnegfapproach
AT pramanikparna humiditysensorusingsurfaceadsorbedchannelmodulatedgraphenenanoribbonnegfapproach
AT tusharraihanulislam humiditysensorusingsurfaceadsorbedchannelmodulatedgraphenenanoribbonnegfapproach
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