Dynamic microscale temperature gradient in a gold nanorod solution measured by diffraction-limited nanothermometry

Journal Article · Mon Sep 21 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4931724· OSTI ID:22482111

Li, Chengmingyue; Gan, Xiaosong; Li, Xiangping; Gu, Min ^[1]

---

1. Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122 (Australia)

We quantify the dynamic microscale temperature gradient in a gold nanorod solution using quantum-dot-based microscopic fluorescence nanothermometry. By incorporating CdSe quantum dots into the solution as a nanothermometer, precise temperature mapping with diffraction-limited spatial resolution and sub-degree temperature resolution is achieved. The acquired data on heat generation and dissipation show an excellent agreement with theoretical simulations. This work reveals an effective approach for noninvasive temperature regulation with localized nanoheaters in microfluidic environment.

• OSTI ID: 22482111
• Journal Information: Applied Physics Letters, Vol. 107, Issue 12; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CADMIUM SELENIDES
DIFFRACTION
FLUORESCENCE
GOLD
MAPPING
MATHEMATICAL SOLUTIONS
QUANTUM DOTS
SIMULATION
SPATIAL RESOLUTION
TEMPERATURE GRADIENTS