Plasmon-enhanced rotational dynamics of anisotropic core-shell polymeric-metallic microparticles

作     者：NICOLA PELLIZZI ALFREDO MAZZULLA PASQUALE PAGLIUSI GABRIELLA CIPPARRONE NICOLA PELLIZZI;ALFREDO MAZZULLA;PASQUALE PAGLIUSI;GABRIELLA CIPPARRONE

作者机构：Physics DepartmentUniversity of Calabria87036 Rende(CS)Italy Cnr—Istituto di Nanotecnologia-sede secondaria di Rende(CS)Italy 

出 版 物：《Photonics Research》 (光子学研究（英文版）)

年 卷 期：2022年第10卷第12期

页      面：2734-2742页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

主　　题：metallic dynamics anisotropic 

摘      要：The development of efficient and cost-effective micromachines is a challenge for applied and fundamental science,given their wide fields of *** is a suitable tool to move small objects in a noncontact way,given its capabilities in exerting forces and ***,when complex manipulation is required,micro-objects with proper architecture could play a specific *** we report on the rotational dynamics of core-shell particles,with a polymeric nematic core of ellipsoidal shape capped by Au *** undergo a peculiar synchronous spinning and orbital motion when irradiated by a simple Gaussian beam,which originates from the coupling of the metallic nanoparticles’optical response and the core *** rotation capabilities are strongly enhanced when the trapping wavelength lies in the plasmonic resonance region:indeed,the spin kinetic energy reaches values two orders of magnitude larger than the one of bare *** proposed strategy brings important insights into optimizing the design of light controlled micro-objects and might benefit applications in microfluidics,microrheology,and micromachining involving rotational dynamics.