Thin-film platinum nanowires as sub-wavelength bolometers

Pauline Renoux; Alice Beauny; Levente J. Klein; Hendrik F. Hamann; Snorri Ingvarsson

doi:10.1117/12.904965

22 February 2012 Thin-film platinum nanowires as sub-wavelength bolometers

Pauline Renoux, Alice Beauny, Levente J. Klein, Hendrik F. Hamann, Snorri Ingvarsson

Proceedings Volume 8261, Terahertz Technology and Applications V; 82610I (2012) https://doi.org/10.1117/12.904965
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

We present novel nanoscale bolometers made of lithographically defined platinum wires. The cores of our structures are narrow wires with fixed width of 300 nm and length ranging from 300 nm to 17 μm. Some are significantly smaller in size than the wavelengths they are exposed to from a 1200 K blackbody source. The response of the wire's resistance to the external radiation reflects its temperature and can be monitored in real-time. Previously, we have reported a steep rise in responsivity and detectivity with decreasing wire length under such infrared exposure, for a constant Joule power dissipation in the wire (drive power). In this work, we aim to enhance the performance of the bolometers by changing physical and driving parameters, i.e. the insulating layer thickness or the external bias. We find that after such optimization, structures can reach a responsivity R of 4.5x10⁵ V/W and a detectivity D* of 2.3x10¹⁰ cmHz^1/2/W. With a reduced size and a high performance, these devices could improve the infrared sensors technology.

Citation Download Citation

Pauline Renoux, Alice Beauny, Levente J. Klein, Hendrik F. Hamann, and Snorri Ingvarsson "Thin-film platinum nanowires as sub-wavelength bolometers", Proc. SPIE 8261, Terahertz Technology and Applications V, 82610I (22 February 2012); https://doi.org/10.1117/12.904965

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available