title: Real-time monitoring and visualization of the multi-dimensional motion of an anisotropic nanoparticle.
abstract: As interest in anisotropic particles has increased in various research fields, methods of tracking such particles have become increasingly desirable. Here, we present a new and intuitive method to monitor the Brownian motion of a nanowire, which can construct and visualize multi-dimensional motion of a nanowire confined in an optical trap, using a dual particle tracking system. We measured the isolated angular fluctuations and translational motion of the nanowire in the optical trap, and determined its physical properties, such as stiffness and torque constants, depending on laser power and polarization direction. This has wide implications in nanoscience and nanotechnology with levitated anisotropic nanoparticles.
authors.affiliation: Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
authors.forename: Gi-Hyun
authors.initials: GH
authors.lastname: Go
authors.affiliation: Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.
authors.forename: Seungjin
authors.initials: S
authors.lastname: Heo
authors.affiliation: Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
authors.forename: Jong-Hoi
authors.initials: JH
authors.lastname: Cho
authors.affiliation: Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
authors.forename: Yang-Seok
authors.initials: YS
authors.lastname: Yoo
authors.affiliation: Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.
authors.forename: MinKwan
authors.initials: M
authors.lastname: Kim
authors.affiliation: Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
authors.forename: Chung-Hyun
authors.initials: CH
authors.lastname: Park
authors.affiliation: Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
authors.forename: Yong-Hoon
authors.initials: YH
authors.lastname: Cho