Manipulation Assembly of CuxS Dendrites Using Optical Tweezers

We present the applications of optical tweezers to manipulate and assemble Cu x s dendrites in fluidic medium. Our techniques involve the use of an optical tweezers, a single focused laser beam as non-contact manipulators to assemble Cu x S at designated location in a sample chamber. Using this simple tool, we are able to readily arrange the dendrites into interesting configurations. Besides a simple focused laser beam, an asymmetrical line optical tweezers was utilized to manipulate and propel the Cu x S along the length of the line tweezers. Finally, an application of using dendrites as a possible micro-machine powered by optical force has been explored in this work.