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Potentiality of polysilicon nanogap structure for label-free biomolecular detection

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Main Authors: Thikra S., Dhahi, Uda, Hashim, Prof. Dr., Md Eaqub, Ali, Dr.
Other Authors: sthikra@yahoo.com
Format: Article
Language:English
Published: Emerald Group Publishing Limited 2014
Subjects:
Dielectric-based biomolecular detection
Double-layer capacitance
Nanogap electrodes
Sensors
Silicon
Online Access:http://dspace.unimap.edu.my:80/dspace/handle/123456789/32973
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spelling my.unimap-329732014-03-21T07:31:56Z Potentiality of polysilicon nanogap structure for label-free biomolecular detection Thikra S., Dhahi Uda, Hashim, Prof. Dr. Md Eaqub, Ali, Dr. sthikra@yahoo.com uda@unimap.edu.my eaqubali@um.edu.my Dielectric-based biomolecular detection Double-layer capacitance Nanogap electrodes Sensors Silicon Link to publisher's homepage at http://www.emeraldinsight.com/ Purpose - The purpose of this paper was to systematically study the electrical properties of 5-, 42- and 75-nm gap polysilicon structures to evaluate the potentiality of these structures to be used in biomolecular sensing devices. Design/methodology/approach - The authors previously reported the fabrication and morphological characterization of these structures. In this report, they electrically probed the presence of nanogap through current measurement. The effects of electrolytes on the capacitance profiles of these structures were systematically studied with air, water and various dilutions of phosphate buffer saline. Findings - An increment in capacitance was found with the increment in electrolyte concentration. Improvement in current flow, capacitance, permittivity, and conductivity were observed with the smaller size nanogaps, suggesting their applications in low power consuming devices. Originality/value - Since nanogap-based dielectric biosensing devices need to be operated with a low level of current to avoid biomolecular damage, these structures should have potential applications in dielectric-based biomolecular detection using a low cost dielectric analyser. 2014-03-21T07:31:56Z 2014-03-21T07:31:56Z 2013 Article Microelectronics International, vol. 30(2), 2013, pages 68-72 1356-5362 http://www.emeraldinsight.com/journals.htm?articleid=17086469 http://dspace.unimap.edu.my:80/dspace/handle/123456789/32973 en Emerald Group Publishing Limited
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Dielectric-based biomolecular detection
Double-layer capacitance
Nanogap electrodes
Sensors
Silicon
spellingShingle Dielectric-based biomolecular detection
Double-layer capacitance
Nanogap electrodes
Sensors
Silicon
Thikra S., Dhahi
Uda, Hashim, Prof. Dr.
Md Eaqub, Ali, Dr.
Potentiality of polysilicon nanogap structure for label-free biomolecular detection
description Link to publisher's homepage at http://www.emeraldinsight.com/
author2 sthikra@yahoo.com
author_facet sthikra@yahoo.com
Thikra S., Dhahi
Uda, Hashim, Prof. Dr.
Md Eaqub, Ali, Dr.
format Article
author Thikra S., Dhahi
Uda, Hashim, Prof. Dr.
Md Eaqub, Ali, Dr.
author_sort Thikra S., Dhahi
title Potentiality of polysilicon nanogap structure for label-free biomolecular detection
title_short Potentiality of polysilicon nanogap structure for label-free biomolecular detection
title_full Potentiality of polysilicon nanogap structure for label-free biomolecular detection
title_fullStr Potentiality of polysilicon nanogap structure for label-free biomolecular detection
title_full_unstemmed Potentiality of polysilicon nanogap structure for label-free biomolecular detection
title_sort potentiality of polysilicon nanogap structure for label-free biomolecular detection
publisher Emerald Group Publishing Limited
publishDate 2014
url http://dspace.unimap.edu.my:80/dspace/handle/123456789/32973
_version_ 1643797038802927616
score 13.222552

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