Selective calcium ion detection with functionalized ZnO nanorods-extended gate MOSFET
(2009) In Biosensors & Bioelectronics 24(11). p.3379-3382- Abstract
- Zinc oxide nanorod-extended gate field effect transistor (MOSFET) is demonstrated for the detection of calcium (Ca2+) ions. ZnO nanorods were grown on the surface of a silver wire to produce an electrochemical nanosensor for selectively detecting Ca2+. The electrochemical response from the interaction between the ZnO nanorods and Ca2+ in an aqueous solution is coupled directly to the gate of a field effect transistor (MOSFET). The induced voltage change on the gate results in a measureable current response. In order to adapt the sensors for Ca2+ ions measurements in biological fluids with sufficient selectivity and stability, a plastic membrane coating containing ionophores was applied on the nanorods. The sensor exhibited a linear... (More)
- Zinc oxide nanorod-extended gate field effect transistor (MOSFET) is demonstrated for the detection of calcium (Ca2+) ions. ZnO nanorods were grown on the surface of a silver wire to produce an electrochemical nanosensor for selectively detecting Ca2+. The electrochemical response from the interaction between the ZnO nanorods and Ca2+ in an aqueous solution is coupled directly to the gate of a field effect transistor (MOSFET). The induced voltage change on the gate results in a measureable current response. In order to adapt the sensors for Ca2+ ions measurements in biological fluids with sufficient selectivity and stability, a plastic membrane coating containing ionophores was applied on the nanorods. The sensor exhibited a linear response within the range of interest from 1 mu M to 1 mM. This work demonstrates a simple technique for sensitive detection of Ca2+ ions by efficient transfer of the chemical response directly to a standard electronic component producing a low impedance signal. (C) 2009 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1463433
- author
- Asif, M. H. ; Nur, O. ; Willander, M. and Danielsson, Bengt LU
- organization
- publishing date
- 2009
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- MOSFETs, ZnO nanowires, Calcium ions, Electrochemical sensors
- in
- Biosensors & Bioelectronics
- volume
- 24
- issue
- 11
- pages
- 3379 - 3382
- publisher
- Elsevier
- external identifiers
-
- wos:000267577900033
- scopus:67349179921
- pmid:19442511
- ISSN
- 1873-4235
- DOI
- 10.1016/j.bios.2009.04.011
- language
- English
- LU publication?
- yes
- id
- 52ea14da-16ca-43e3-ac9d-199c5bcbc4f4 (old id 1463433)
- date added to LUP
- 2016-04-01 13:29:28
- date last changed
- 2022-03-21 18:51:42
@article{52ea14da-16ca-43e3-ac9d-199c5bcbc4f4, abstract = {{Zinc oxide nanorod-extended gate field effect transistor (MOSFET) is demonstrated for the detection of calcium (Ca2+) ions. ZnO nanorods were grown on the surface of a silver wire to produce an electrochemical nanosensor for selectively detecting Ca2+. The electrochemical response from the interaction between the ZnO nanorods and Ca2+ in an aqueous solution is coupled directly to the gate of a field effect transistor (MOSFET). The induced voltage change on the gate results in a measureable current response. In order to adapt the sensors for Ca2+ ions measurements in biological fluids with sufficient selectivity and stability, a plastic membrane coating containing ionophores was applied on the nanorods. The sensor exhibited a linear response within the range of interest from 1 mu M to 1 mM. This work demonstrates a simple technique for sensitive detection of Ca2+ ions by efficient transfer of the chemical response directly to a standard electronic component producing a low impedance signal. (C) 2009 Elsevier B.V. All rights reserved.}}, author = {{Asif, M. H. and Nur, O. and Willander, M. and Danielsson, Bengt}}, issn = {{1873-4235}}, keywords = {{MOSFETs; ZnO nanowires; Calcium ions; Electrochemical sensors}}, language = {{eng}}, number = {{11}}, pages = {{3379--3382}}, publisher = {{Elsevier}}, series = {{Biosensors & Bioelectronics}}, title = {{Selective calcium ion detection with functionalized ZnO nanorods-extended gate MOSFET}}, url = {{http://dx.doi.org/10.1016/j.bios.2009.04.011}}, doi = {{10.1016/j.bios.2009.04.011}}, volume = {{24}}, year = {{2009}}, }