TY - JOUR
T1 - Enhancement of photothermal effect using a hierarchical plasmonic structure
AU - Chang, Chin Kai
AU - Huang, Tuan Hsiang
N1 - Funding Information:
This work was financially supported from the Ministry of Science and Technology, Taiwan , Grant No. 111-2221-E-006-199 . The authors would like to thank the technical supports provided by the “Core Facility Center of National Cheng Kung University”.
Funding Information:
This work was financially supported from the Ministry of Science and Technology, Taiwan, Grant No. 111-2221-E-006-199. The authors would like to thank the technical supports provided by the “Core Facility Center of National Cheng Kung University”.
Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/11/30
Y1 - 2023/11/30
N2 - The photothermal effect exhibited by plasmonic structures has garnered considerable attention because of its versatile application prospects. However, the conversion efficiency of broadband light sources and large area fabrication still pose challenges. Herein, a hierarchical plasmonic structure was proposed as a photothermal substrate, which integrated a two-dimensional periodic microstructure with a disordered nanostructure. The microstructure and nanostructure were obtained through litho-etching and metal-assisted chemical etching technologies, respectively. Titanium nitride was deposited on the hierarchical structure as the mediator between the irradiation and generation of heat. The metallic nanostructure on the hierarchical structure played a crucial role in generating the thermoplasmonic effect. Moreover, the type (vertical and tapered shapes) of the microstructure and morphology (porous texture and deep trench) of the nanostructure were also altered to investigate the photothermal effect. The addition of deeper nanotrenches on the tapered microstructure exhibited a synergistic effect on the photothermal efficiency. The hierarchical plasmonic structures were experimentally demonstrated to exhibit a 3.6 times greater photothermal efficiency (change in temperature) compared to a titanium nitride film. These engineered hierarchical structures have remarkable potential for use as non-classical photothermal devices.
AB - The photothermal effect exhibited by plasmonic structures has garnered considerable attention because of its versatile application prospects. However, the conversion efficiency of broadband light sources and large area fabrication still pose challenges. Herein, a hierarchical plasmonic structure was proposed as a photothermal substrate, which integrated a two-dimensional periodic microstructure with a disordered nanostructure. The microstructure and nanostructure were obtained through litho-etching and metal-assisted chemical etching technologies, respectively. Titanium nitride was deposited on the hierarchical structure as the mediator between the irradiation and generation of heat. The metallic nanostructure on the hierarchical structure played a crucial role in generating the thermoplasmonic effect. Moreover, the type (vertical and tapered shapes) of the microstructure and morphology (porous texture and deep trench) of the nanostructure were also altered to investigate the photothermal effect. The addition of deeper nanotrenches on the tapered microstructure exhibited a synergistic effect on the photothermal efficiency. The hierarchical plasmonic structures were experimentally demonstrated to exhibit a 3.6 times greater photothermal efficiency (change in temperature) compared to a titanium nitride film. These engineered hierarchical structures have remarkable potential for use as non-classical photothermal devices.
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U2 - 10.1016/j.apsusc.2023.158034
DO - 10.1016/j.apsusc.2023.158034
M3 - Article
AN - SCOPUS:85164804510
SN - 0169-4332
VL - 638
JO - Applied Surface Science
JF - Applied Surface Science
M1 - 158034
ER -