Sensors nanowires

Zheng, G. F. Patolsky, F. Cui, Y. Wang, W. U. Lieber, C. M., Multiplexed elec trical detection of cancer markers with nanowire sensor arrays, Nat. Biotechnol. 2005, 23, 1294 1301... 

J. Hahm and C. M. Lieber, Direct ultrasensitive electrical detection of DNA and DNA sequence variations using nanowire sensors , Nano Letters 4, 51 (2004). 

Patolsky F, Zheng G, Leiber CM. Nanowire sensors for medicine and the life sciences. Nanomedicine 2006 1 51-65. 

Kolmakov A, Zhang YX, Cheng GS, Moskovits M (2003) Detection of CO and 0-2 using tin oxide nanowire sensors. Adv Mater 15 997-1000... 

Figure 5.34 shows a diagram of a single ZnO nanowire sensor and an SEM micrograph. Figure 5.35 illustrates the time dependence of resistance of Pt-coated ZnO nanowires as the gas ambient is switched from N2 to various concentrations of Hj in N2 (10-500 ppm) over time. There are several aspects that are noteworthy. First, there is a strong increase (approximately... 

SEM image of an array of SNAP nanowire sensors. Each device (horizontal strip) is contacted by two Ti electrodes (oriented vertically) that extend to larger pads (top and bottom image edges). Inset ... 

Prades, ID., Jimenez-Diaz, R., Hemandez-Ramirez, E, Barth, S., Cirera, A., Romano-Rodriguez, A., Mathur, S. and Morante, J.R. (2009), Equivalence between thermal and room temperature UV hght-modulated responses of gas sensors based on individual Sn02 nanowires . Sensors and Actuators B Chemical, 140,2,337-41. 

Figure 12.17 PANl/PEO nanowire sensors for ammonia gas at different concentrations. Reproduced with permission from Ref [107], Copyright 2004 American Chemical Society.

Im Y, Vasquez RP, Lee C, Myung N, Penner R, Yun M (2006a) Single metal and conducting polymer nanowire sensors for chemical and DNA detections. J Phys Conf Ser 38 61-64... 

Another approach to increase the sensitivity is to enhance molecule adsorption by modifying the surface (Kohnakov 2008). The surface of the nanowire sensors is always critical to their performance. 

Wan J, Deng SR, Yang R, Shn Z, Ln BR, Xie SQ, Chen Y, Huq E, Liu R, Qu XP (2009) Silicon nanowire sensor for gas detection fabricated by nanoimprint on SU8/SiOj/PMMA trilayer. Microelectron Eng 86 1238-1242 Wang XU, Chen X, Xie Z-X, Wang X-R (2008) Reversible optical sensor strip for oxygen. Angew Chem Int Ed 47 7450-7453... 

Chiriac H, Moga AE, Urse M, Ovari T-A (2003) Preparation and magnetic properties of electrodeposited magnetic nanowires. Sensors Actuat A Phys 106 348-351... 

Dattoli EN, Davydov AV et al (2012) Tin oxide nanowire sensor with integrated temperature and gate control for multi-gas recognition. Nanoscale 4(5) 1760-1769... 

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