Nano-Electronics for Bio-Chemical Sensors

Agarwal, A (2013) Nano-Electronics for Bio-Chemical Sensors. In: National Conference on Bioelectronics & Biomedical Technology, January 29-30, 2013, Dept. of Biochemistry, Jamia Hamdard, New Delhi. (Submitted)

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Abstract

Nanotechnologies have enabled novel nano-dimensional materials, structures and eventually devices which find numerous applications in the field of medical diagnostics, drug delivery, electronics, energy production, etc. With the increasing awareness, healthcare is particularly in focus that includes early diagnosis, drugs discovery, etc. For these bio-medical applications, specific and sensitive detection of various biological and chemical species becomes crucial. Among the various nano-materials realized, CNT, Nano-Gap and Nanowire based bio-chemical sensors are most exploited for the purpose. Nano-Gap sensors works on two principles; either on the ‘change of the conductivity’ of the sensing layers between the nano-electrodes when exposed to analytes or based on ‘Electro-magnetic enhancement’ using micro Raman spectroscopy. Nanowire sensors work on the principle of ‘Field Effect Transistor’ (FET) where charges associated with the chemical molecule or the biological specie is attached on the nanowire surface and acts as chemical or bio-gate; the devices are hence termed as CHEM-FET or BIOFET. The nano-structured sensors platforms will be presented; demonstrating their bio-medical applications like DNA sensing for Single Nucleotide Polymorphisms (SNP) and Heterozygous SNPs detection; analysis of various ions like H+ (pH), alkali metal ions (Ca2+, Mg2+, Na+, K+)7; Cu2+, Zn2+; bio-electricity detection from cells and organs, etc. The reproducible process technologies are used to realize such devices and hence are suitable for mass production. Details will be discussed

Item Type:	Conference or Workshop Item (Speech)
Subjects:	?? TK ?? Semiconductor Devices > MEMS and Microsensors
Divisions:	Semiconductor Devices
Depositing User:	Mr. Rabin Chatterjee
Date Deposited:	24 May 2013 05:55
Last Modified:	24 May 2013 05:55
URI:	http://ceeri.csircentral.net/id/eprint/33

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