Indirect nanoplasmonic sensing: Ultrasensitive experimental platform for nanomaterials science and optical nanocalorimetry
Journal article, 2010

Indirect nanoplasmonic sensing is a novel experimental platform for measurements of thermodynamics and kinetics in/on nanomaterials and thin films. It features simple experimental setup, high sensitivity, small sample amounts, high temporal resolution ( < 10 -3 s), operating conditions from UHV to high pressure, wide temperature range, and applicability to any nano- or thin film material. The method utilizes two-dimensional arrangements of nanoplasmonic Au sensor-nanoparticles coated with a thin dielectric spacer layer onto which the sample material is deposited. The measured signal is spectral shifts of the Au-sensor localized plasmons, induced by processes in/on the sample material. Here, the method is applied to three systems exhibiting nanosize effects, (i) the glass transition of confined polymers, (ii) catalytic light-off on Pd nanocatalysts, and (iii) thermodynamics and kinetics of hydrogen uptake/release in Pd nanoparticles < 5 nm. In (i) and (iii), dielectric changes in the sample are detected, while (ii) demonstrates a novel optical nanocalorimetry method. © 2010 American Chemical Society.

Indirect nanoplasmonic sensing

optical nanocalorimetry

localized surface plasmon resonance

polymer glass transition

hydrogen storage

catalysis

Author

Christoph Langhammer

Chalmers, Applied Physics, Chemical Physics

Elin Maria Kristina Larsson

Competence Centre for Catalysis (KCK)

Chalmers, Applied Physics, Chemical Physics

Bengt Herbert Kasemo

Competence Centre for Catalysis (KCK)

Chalmers, Applied Physics, Chemical Physics

Igor Zoric

Chalmers, Applied Physics, Chemical Physics

Nano Letters

1530-6984 (ISSN) 1530-6992 (eISSN)

Vol. 10 9 3529-3538

Subject Categories

Atom and Molecular Physics and Optics

DOI

10.1021/nl101727b

More information

Created

10/8/2017