Ultralow power consumption gas sensors based on self-heated individual nanowires

Applied Physics Letters

Volumn 93, Issue 12, 2008, Pages

  Prades, J D ^a   Jimenez Diaz, R ^a   Hernandez Ramirez, F ^a,b   Barth, S ^c,e   Cirera, A ^a   Romano Rodriguez, A ^a   Mathur, S ^c,d   Morante, J R ^a  

^a UNIVERSITY OF BARCELONA   (Spain)

^b Electronic Nanosystems S L   (Spain)

^c INM LEIBNIZ INSTITUTE FOR NEW MATERIALS   (Germany)

^d UNIVERSITY OF COLOGNE   (Germany)

^e INRS EMT   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

METALLIC COMPOUNDS; METALS; NANOSTRUCTURED MATERIALS; NANOSTRUCTURES; NANOWIRES;

DISSIPATED POWER; GAS SENSORS; METAL OXIDE NANOWIRES; ULTRA-LOW-POWER;

ELECTRIC WIRE;

EID: 52949121756     PISSN: 00036951     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.2988265     Document Type: Article

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15. In our devices, the resistance of the reverse biased contact RDRV =211 M is not negligible compared to the resistance of the nanowire RNW =76 M [This results are extracted from Ref.].
16. The electrical dissipated power P by Joule effect at an Ohmic device is given by P= I2 R, where I is the current flowing through it and R is its electrical resistance. The maximum R we measured in our devices was Rmax ∼300 M and the maximum current we applied was Im max =300 nA. Thus, the highest power dissipated at the device was Pmax ∼27 μW.
17. According to the specifications given by the manufacturer (European Aeronautic Defense and Space Company, EADS N.V.), the suspended membranes we used (model IESSICA) require 140 mW to reach the maximum temperature achieved with self-heating (Im max =300 nA corresponded to T≈300 °C).