Titanium nitride nanoparticles as plasmonic nanothermometers

被引：0

作者：

Sarabia-Alonso, Julio Aurelio ^{[1
]}

Pasos, Emmanuel Vidales ^{[1
]}

Belamkar, Aishwarya ^{[1
]}

Wagner, Brandon ^{[2
]}

Mangolini, Lorenzo ^{[1
,2
]}

机构：

[1] Department of Mechanical Engineering, University of California, Riverside, 900 University Ave., Riverside, 92521, CA

[2] Materials Science and Engineering Program, University of California, Riverside, 900 University Ave., Riverside, 92521, CA

来源：

Optics Express | 2025年 / 33卷 / 04期

基金：

美国国家科学基金会;

关键词：

Gold nanoparticles - Metal nanoparticles - Nanoclay - Phonons - Plasmonic nanoparticles - Plasmonics - Temperature measurement - Temperature measuring instruments;

D O I：

10.1364/OE.549815

中图分类号：

学科分类号：

摘要：

The capability of measuring the temperature at nanometer length scales is highly desirable and useful in numerous fields such as plasmonics, biomedicine, and nanochemistry. Precise and easy-to-implement temperature measurements at these scales would enable the investigation of fundamental processes that occur, for instance, during the synthesis of nanomaterials, or the conversion of electromagnetic energy into thermal one (photothermal conversion). Here, we demonstrate that titanium nitride nanoparticles are effective nanothermometers whose temperature can be measured optically in a reliable and reproducible manner. We leverage the Raman signal from these nanomaterials to measure their temperature, and we do so in two different ways: using the phononic signature induced by the presence of native oxide and using the electronic anti-stoke Raman signal induced by the free electrons in the material. Our findings confirm that titanium nitride nanoparticles, which are already an earth-abundant, low-cost alternative to gold nanoparticles, are also a versatile tool for nanothermometry. © 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.

引用

页码：6758 / 6770

页数：12