Highly-sensitive thermal imaging for the characterization of single nano-particles (Conference Presentation)

Antoine Federici; Hadrien Robert; Kahina Meziane; Serge Monneret; Guillaume Baffou; Benoit Wattellier

doi:10.1117/12.2290128

15 March 2018 Highly-sensitive thermal imaging for the characterization of single nano-particles (Conference Presentation)

Antoine Federici, Hadrien Robert, Kahina Meziane, Serge Monneret, Guillaume Baffou, Benoit Wattellier

Author Affiliations +

Proceedings Volume 10507, Colloidal Nanoparticles for Biomedical Applications XIII; 1050704 (2018) https://doi.org/10.1117/12.2290128
Event: SPIE BiOS, 2018, San Francisco, California, United States

Abstract

Bright-field thermal imaging at the microscopic level was proved to be possible by quantitatively measuring the transmitted phase with a Quadriwave Lateral Shearing Interferometry (QWLSI). This approach, introduced by G. Baffou in collaboration with PHASICS SA [1], is able to measure temperature fields from temperature-induced refractive index changes of the medium surrounding heat sources. These heat sources are generated by a continuous plane laser wave source illuminating nano-particles at their plasmonic resonance. Heat maps and temperature fields are measured in parallel thanks to a QWLSI SID4BIO camera, developed by PHASICS. The quantitative phase signal is deconvolved to obtain the temperature variation and heat map values. With this set-up, a resolution of 1°C has been achieved. We present here a highly-resolution thermal imaging system applied to the detection and characterization of isolated single nano-particles by measuring their cross-section size. Because single nano-particles induce low temperature signals, we implement a noise-reduction modality based on synchronous detection. To do so, we use a modulated laser source locked-in with the SID4Bio camera. Since the heating process is modulated in time, this configuration improves the signal-to-noise ratio of the temperature measurement as we get rid of most of low-frequency noise which is a main contribution of the noise signal. The carried out experimental measurements presented will be analyzed along with the theoretical calculations introduced in [1]. References [1] Baffou, G., Bon, P., Savatier, J., Polleux, J., Zhu, M., Merlin, M., ... & Monneret, S. (2012). Thermal imaging of nanostructures by quantitative optical phase analysis. ACS nano, 6(3), 2452-2458.

Conference Presentation

Citation Download Citation

Antoine Federici, Hadrien Robert, Kahina Meziane, Serge Monneret, Guillaume Baffou, and Benoit Wattellier "Highly-sensitive thermal imaging for the characterization of single nano-particles (Conference Presentation)", Proc. SPIE 10507, Colloidal Nanoparticles for Biomedical Applications XIII, 1050704 (15 March 2018); https://doi.org/10.1117/12.2290128

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Thermography

Signal to noise ratio

Temperature metrology

Cameras

Interference (communication)

Modulation

Plasmonics

Show All Keywords

Keywords/Phrases

Search In:

Publication Years