Size-controllable micro-bubble generation using a nanoimprinted plasmonic nanopillar array absorber in the near-infrared region

作者：Yang Sheng Chieh; Fischer Wolf Joachim; Yang Tsung Lin

来源：Applied Physics Letters, 2016, 108(18): 183105.

DOI：10.1063/1.4948659

Size-controllable micro-bubble generation from thermoplasmonic effect is of great interest in many fields. In this study, photothermal bubble generation is demonstrated by using a near-infrared plasmonic absorber. A plasmonic nanopillar array is fabricated using a simple and low-cost soft thermal nanoimprint lithography process. Under near-infrared illumination, the plasmonic absorber becomes a highly efficient nanosource of heat because of enhanced light absorption at the localized surface plasmon resonance wavelength. The plasmonic substrate is able to generate size-tunable bubbles, depending on the illumination power and exposure time. The results of finite-difference time-domain simulations exhibit close agreement with the experimental observations. This study could provide alternative chemical synthesis approaches in solvothermal chemistry and sol-gel chemistry. Published by AIP Publishing.

• 出版日期2016-5-2