TY - JOUR

T1 - Boltzmann-Distribution-Driven Cathodoluminescence Thermometry in In Situ Transmission Electron Microscopy

AU - Колесников, Илья Евгеньевич

AU - Olshin, Pavel

AU - Park, Won-Woo

AU - Kim, Ye-Jin

AU - Choi, Ye-Jin

AU - Мамонова, Дарья Владимировна

AU - Афанасьева, Елена Владимировна

AU - Kwon, Oh-Hoon

PY - 2024/11/27

Y1 - 2024/11/27

N2 - Nanothermometry in in situ transmission electron microscopy (TEM) is useful for comprehending the functioning mechanisms of the heterogeneous matter through real-time observations. Herein, we introduce a Boltzmann-distribution-driven cathodoluminescence (CL) nanothermometry for in situ local temperature probing in TEM. The population distribution across the close-lying Stark sublevels of dysprosium ions in an yttrium vanadate matrix follows the Boltzmann distribution, enabling the use of the CL-intensity ratio as a thermometry over a wide temperature range of 103-435 K with a relative sensitivity exceeding 3% K-1 and precision of ±2%. Superior to other CL-based thermometries, the present approach is independent of electron-beam parameters and dopant concentration, extending the robustness and applicability of CL-based nanothermometry in electron microscopy. We further demonstrate the real-time mapping of the temperature distribution across a TEM grid under laser irradiation.

AB - Nanothermometry in in situ transmission electron microscopy (TEM) is useful for comprehending the functioning mechanisms of the heterogeneous matter through real-time observations. Herein, we introduce a Boltzmann-distribution-driven cathodoluminescence (CL) nanothermometry for in situ local temperature probing in TEM. The population distribution across the close-lying Stark sublevels of dysprosium ions in an yttrium vanadate matrix follows the Boltzmann distribution, enabling the use of the CL-intensity ratio as a thermometry over a wide temperature range of 103-435 K with a relative sensitivity exceeding 3% K-1 and precision of ±2%. Superior to other CL-based thermometries, the present approach is independent of electron-beam parameters and dopant concentration, extending the robustness and applicability of CL-based nanothermometry in electron microscopy. We further demonstrate the real-time mapping of the temperature distribution across a TEM grid under laser irradiation.

KW - Boltzmann distribution

KW - cathodoluminescence

KW - in situ transmission electron microscopy

KW - laser heating

KW - nanothermometry

UR - https://www.mendeley.com/catalogue/46705264-6355-3766-b958-724f4fbcaed7/

U2 - 10.1021/acsnano.4c10126

DO - 10.1021/acsnano.4c10126

M3 - Article

VL - 18

SP - 33441

EP - 33451

JO - ACS Nano

JF - ACS Nano

SN - 1936-0851

IS - 49

ER -