MICRO-ROBOTICS
VISCOSITY MEASUREMENT
Bending of a flexible cantilever structure by optical tweezers.
After switching the trapping laser off, the cantilevers moved back to the initial equilibrium in an
overdamped oscillatory regime.
The video analysis of the recovery motion was used to determine the cantilever’s visco-elastic
characteristics (see Kubackova 2020).
For viscosity measurement, the deflection angle only about 10 degrees is used.
Experiment
Viscosity measurement. a) Experiment. b) Cantilevered nanowire in water. c) SEM picture of the dried cantilever. The right side of the structure was cut and removed before the experiments. d) The mechanical model for the sphere motion along the recovery trajectory.
Results
a) The displacement recovery curves measured in glucose solutions of 0, 100, 150, 200, 250, 300, and 350 mg/ml concentration. The solid lines represent bi-exponential fits. All the curves were normalized to unity. b) The weighted average time τwat (open blue circles), and its two terms: τe (solid black squares) and τi (solid red circles) plotted as a function of the solution viscosity.
MICRO-MANIPULATION
Micro-manipulation by fingers
Sorting by fingers
Computer game "Crazy traps" controlled by fingers
Game was created just for fun, it is running on HOT simulator. User should place cells by his fingers into safe containers in corners avoiding dangerous crazy traps.
MICRO-MANIPULATION
Manual control of micro-fork
Indirect micro-manipulation by micro-fork
PATH PLANNING
Path planning is a strategy how to move a particle to the destination without the collision with an obstacles.