The forbidden band and size selectivity of acoustic radiation force trapping

被引：19

作者：

Li, Zhaoxi ^{[1
]}

Wang, Danfeng ^{[2
]}

Fei, Chunlong ^{[1
,4
]}

Qiu, Zhihai ^{[3
]}

Hou, Chenxue ^{[1
]}

Wu, Runcong ^{[1
]}

Li, Di ^{[1
]}

Zhang, Qidong ^{[1
]}

Chen, Dongdong ^{[1
]}

Chen, Zeyu ^{[2
]}

Feng, Wei ^{[4
]}

Yang, Yintang ^{[1
]}

机构：

[1] Xidian Univ, Sch Microelect, Xian, Peoples R China

[2] Cent South Univ, Sch Mech & Elect Engn, Changsha, Peoples R China

[3] Stanford Univ, Dept Radiol, Stanford, CA 94305 USA

[4] Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen 518055, Peoples R China

来源：

ISCIENCE | 2021年 / 24卷 / 01期

基金：

中国国家自然科学基金;

关键词：

OPTICAL TWEEZERS; BEAM; SPHERE; SPECTROSCOPY; MANIPULATION; FEASIBILITY;

D O I：

10.1016/j.isci.2020.101988

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Acoustic micro-beams produced by highly focused ultrasound transducer have been investigated for micro-particle and cell manipulation. Here we report the selective trapping of microspheres via the acoustic force using the single acoustical beam. The forbidden band theory of acoustic radiation force trapping is proposed, which indicates that the trapping of particles via the acoustic beam is directly related to the particle diameter-to-beam wavelength ratio as well as excitation frequency of the ultrasonic acoustic tweezers. Three tightly focused LiNbO3 transducers with different center frequencies were fabricated for use as selective single beam acoustic tweezers (SBATs). These SBATs were capable of selectively manipulating microspheres of sizes 5-45 mm by adjusting the wavelength of acoustic beam. Our observations could introduce new avenues for research in biology and biophysics by promoting the development of a tool for selectively manipulating microspheres or cells of certain selected sizes, by carefully setting the acoustic beam shape and wavelength.

引用

页数：20

共 32 条

[1] OBSERVATION OF A SINGLE-BEAM GRADIENT FORCE OPTICAL TRAP FOR DIELECTRIC PARTICLES [J].