Energy Approach for Microscopic Particles Manipulation using Optical Tweezers
نویسندگان
چکیده
In this article we use Lyapunov Second Theorem as well as LaSalle Theorem in order to determine the attraction region of an optical trap and to design an steering strategy to move a microscopic particle by means of optical tweezers. A variational approach based on Lagrangian formulation is used to obtain the equations of motion of a particle in the optical trap[1]. System is proved to be locally asymptotically stable under the assumption that Stoke’s drag force acts on the particle. Then, a stable control strategy to move the particle from an initial rest position to a desired final position is derived from Lyapunov second theorem and LaSalle invariance theorem. Key-Words: Optical tweezers, Lyapunov theorem, LaSalle invariance theorem, Stability, Microparticles, Lagrangian, Particle steering
منابع مشابه
Dynamic DMD-Driven Optoelectronic Tweezers for Microscopic Particle Manipulation
We demonstrate dynamic manipulation of microscopic particles using a DMDproduced projection image in an optoelectronics tweezers system. Single-particle trapping and movement (up to 40 μm/sec) via optically-induced dielectrophoresis were observed. 2003 Optical Society of America OCIS codes: (170.4520) Optical confinement and manipulation, (230.0250) Optoelectronics
متن کاملOn chip shapeable optical tweezers
Particles manipulation with optical forces is known as optical tweezing. While tweezing in free space with laser beams was established in the 1980s, integrating the optical tweezers on a chip is a challenging task. Recent experiments with plasmonic nanoantennas, microring resonators, and photonic crystal nanocavities have demonstrated optical trapping. However, the optical field of a tweezer ma...
متن کاملOptical levitation and manipulation of stuck particles with pulsed optical tweezers.
We report on optical levitation and manipulation of microscopic particles that are stuck on a glass surface with pulsed optical tweezers. An infrared pulse laser at 1.06 microm was used to generate a large gradient force (up to 10(-9) N) within a short duration (approximately 45 micros) that overcomes the adhesive interaction between the particles and the glass surface. Then a low-power continu...
متن کاملCalibration of the optical torque wrench.
The optical torque wrench is a laser trapping technique that expands the capability of standard optical tweezers to torque manipulation and measurement, using the laser linear polarization to orient tailored microscopic birefringent particles. The ability to measure torque of the order of kBT (∼4 pN nm) is especially important in the study of biophysical systems at the molecular and cellular le...
متن کاملOptofluidics and Optoelectronic Tweezers
Optofluidics is the process of integrating the capabilities of optical and fluidic systems to achieve novel functionalities that can benefit from both. Among the novel capabilities that an optical system can bring to the table is the ability to manipulate objects of interest in a liquid media. In the case of biological samples, the objects of interest consist mainly of cells and viruses, wherea...
متن کامل