Optical heating of plasmonic nanoparticles: insights, applications and perspectives.
Oct 25, 2024
2:30PM to 3:30PM
Date/Time
Date(s) - 25/10/2024
2:30 pm - 3:30 pm
Categories
Prof. Renato de Araujo
Federal University of Pernambuco, Brazil
Due to exceptional optical absorption properties, metallic nanoparticles have gained significant attention as advanced materials for medical applications, including optical therapy and diagnostic techniques. Plasmonic nanoparticles, in particular, can serve as efficient heat generators, providing uniform and controlled thermal release to their surroundings at specific excitation wavelengths. Maximizing the thermal performance of these nanoparticles may reduce the required nanoheater agent dosage in plasmon-based medical thermal procedures. The shape, material compositions, and size of metallic nanoparticles directly impact their optical characteristics, providing opportunities for tailored applications and improved performance in various technological domains. This presentation will reveal the rules on selecting efficient plasmonic nanoheaters for biomedical proposes. Here, the size dependence of plasmonic nanoparticle optical heating will be disclosed. It will demonstrate the use of optimized gold nanoparticles as photothermal agents in photoacoustic imaging, yeast inactivation, and in-vivo hyperthermia treatment of Sarcoma-180. These findings pave the way for the rational use of plasmonic nanoheaters in biological photothermal applications.
Bio:
Dr. Renato de Araujo got his doctoral degree in physics at the Federal University of Pernambuco, Brazil (2001). During his Ph.D., Dr. de Araujo was involved in the study of nonlinear optical properties of organic materials. He did his postdoctoral training in the Robotic Institute at Carnegie Mellon University (PA, USA), performing research on advanced optical microscopy. In 2003, Dr. de Araujo continued his postdoctoral training at Cedars Sinai Medical Center (CA, USA). In 2006, he received the TWAS Young Scientists Award from the Academy of science for the developing world. In 2013, he got the SUS Science and Technology Award from the Brazilian ministry of health for his work on Dengue. Since 2006, Dr. de Araujo has been a professor at the Federal University of Pernambuco. His main research interests are biophotonics, nanotechnology, biosensors, optical spectroscopy and imaging.
In-Person: ABB 102
Online: https://mcmaster.zoom.us/j/93941198319
Meeting ID: 939 4119 8319
Passcode: 446608