Development of plasmonic optical chromatography of nanoparticles with gold nanohole arrays

2014 Fiscal Year Final Research Report

• Project/Area Number: 25888001
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Physical chemistry
• Research Institution: Osaka City University
• Principal Investigator: SHOJI Tatsuya 大阪市立大学, 大学院理学研究科, 講師 (90701699)
• Project Period (FY): 2013-08-30 – 2015-03-31
• Keywords: 輻射圧 / 顕微散乱分光法 / プラズモン / 光ピンセット / レーザー / 金ナノホールアレイ / ナノ粒子

Outline of Final Research Achievements

Localized surface plasmon resonances are excited at surfaces of noble metallic nanostrcutres by resonant light, resulting in enhanced electromagnetic field of incident light at the surfaces. Plasmonic optical trapping is one of the recent hot topics in the field of plasmonics, since the enhanced electromagnetic field exerts strong radiation force on nanoparticles near the plasmonic nanostructures in comparison with the conventional optical tweezers. The plasmonic optical trapping is potentially applicable to selective trapping and sorting of nanoparticles with different size and shapes.
Plasmonic optical trappings of polystyrene nanoparticles and noble metallic nanoparticles were demonstrated with gold nanohole arrays. These trapping behaviors opened new channel to selective optical trapping and sorting.

Free Research Field

物理化学