title: Dynamics of microbubble generation and trapping by self-focused femtosecond laser pulses.
abstract: Different from conventional optical tweezers used for trapping high refractive index micron-sized particles, bubble generation and trapping by femtosecond laser offer a unique strategy to manipulate microbubbles. Using high frequency ultrasound imaging and fast-frame optical video microscopy, we obtained results revealing the spatiotemporal characteristics of bubble generation and trapping by self-focused femtosecond laser pulses at multiple locations along the laser beam. We detected distinct acoustic signals associated with the laser focus and measured the trapping force by using acoustic radiation force to detrap the bubble from the laser beam.
authors: Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Boulevard, Ann Arbor, Michigan 48109, USA ; Department of Biomedical Engineering, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China.
authors: Kun
authors: K
authors: Yang
authors: Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Boulevard, Ann Arbor, Michigan 48109, USA.
authors: Yun
authors: Y
authors: Zhou
authors: Department of Biomedical Engineering, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China.
authors: Qiushi
authors: Q
authors: Ren
authors: Center for Ultrafast Optical Science and Michigan Nanotechnology Institute for Medicine and Biological Sciences, University of Michigan, 2200 Bonisteel Boulevard, Ann Arbor, Michigan 48109, USA.
authors: Jing Yong
authors: JY
authors: Ye
authors: Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Boulevard, Ann Arbor, Michigan 48109, USA.
authors: Cheri X
authors: CX
authors: Deng