Optothermal Raman analysis of thermal conductance and boundary resistance in a subwavelength single nanoparticle DOI Creative Commons

Nourhan Barakat,

F. El Haj Hassan, M. Kazan

et al.

Journal of Applied Physics, Journal Year: 2025, Volume and Issue: 137(12)

Published: March 26, 2025

We present optothermal Raman spectroscopy as a powerful technique for characterizing the thermal properties of individual subwavelength nanoparticles. This method enables extraction intrinsic conductance an nanoparticle with average size representative inclusion population and resistance at interface between its surrounding matrix. By overcoming spatial resolution limitations conventional techniques, such scanning microscopy, eliminating need complex nanoscale heat transfer modeling, provides direct, size-independent measurements high accuracy. The involves measuring target nanoparticles embedded in matrix smaller, low-density particles varying mass fractions. These are then fitted to effective medium theory extract both boundary Validation studies were conducted on monoclinic gallium oxide (β-Ga₂O₃, 590 nm) zinc (ZnO, 500 granular silicon matrix, well (Si, 100 carbon β-Ga₂O₃ ZnO particles, bulk-like properties, served benchmarks, while Si exhibited size-dependent behavior. Measurements relied resonance frequency precise thermometric signal, results corroborated by first-principles calculations. providing reliable without intricate offers significant advantages property characterization. versatile holds great promise advancing research materials science nanotechnology.

Language: Английский

Structural, Optical, ESR, Magnetic and Anticancer Properties of Co1-xZnxFe2O4 (x= 0 to 1) Ferrites Synthesized by Ultrasonication Assisted Co-precipitation Method DOI
T. Ramesh,

K. Ashok,

Nagaraj Basavegowda

et al.

Materials Chemistry and Physics, Journal Year: 2025, Volume and Issue: unknown, P. 130752 - 130752

Published: March 1, 2025

Language: Английский

Citations

0
Optothermal Raman analysis of thermal conductance and boundary resistance in a subwavelength single nanoparticle DOI Creative Commons

Nourhan Barakat,

F. El Haj Hassan, M. Kazan

et al.

Journal of Applied Physics, Journal Year: 2025, Volume and Issue: 137(12)

Published: March 26, 2025

We present optothermal Raman spectroscopy as a powerful technique for characterizing the thermal properties of individual subwavelength nanoparticles. This method enables extraction intrinsic conductance an nanoparticle with average size representative inclusion population and resistance at interface between its surrounding matrix. By overcoming spatial resolution limitations conventional techniques, such scanning microscopy, eliminating need complex nanoscale heat transfer modeling, provides direct, size-independent measurements high accuracy. The involves measuring target nanoparticles embedded in matrix smaller, low-density particles varying mass fractions. These are then fitted to effective medium theory extract both boundary Validation studies were conducted on monoclinic gallium oxide (β-Ga₂O₃, 590 nm) zinc (ZnO, 500 granular silicon matrix, well (Si, 100 carbon β-Ga₂O₃ ZnO particles, bulk-like properties, served benchmarks, while Si exhibited size-dependent behavior. Measurements relied resonance frequency precise thermometric signal, results corroborated by first-principles calculations. providing reliable without intricate offers significant advantages property characterization. versatile holds great promise advancing research materials science nanotechnology.

Language: Английский

Citations

0