Emir Vela

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Laser induced convection flows is a new and promising method to achieve better manipulation of mesoscale objects (above 1 mum and below 500 mum) in a liquid medium. The temperature gradient created by laser absorption generates natural and thermocapillary (or Marangoni) convection flows. These flows are used to perform the manipulation itself. In this(More)
This work describes an automated opto-fluidic system for parallel non-contact manipulation of microcomponents. The strong dynamics of laser-driven thermocapillary flows were used to drag microcomponents at high speeds. High-speed flows allowed to manipulate micro-objects in a parallel manner only using a single laser and a mirror scanner. An automated(More)
This paper presents the automated parallel noncontact manipulation of glass beads ranging from 30 up to 300 μm in size under water. Non-contact micromanipulation is performed by generating controllable laser-induced thermocapillary flows that are capable of dragging the beads. Automated manipulation process is achieved with visual servoing in order(More)
—We present the conductometric behavior of a single atomic carbon nanostructure (graphene) that could be promising to infrared optoelectronic applications. A graphene nanomanipulation system with focused infrared laser source for optoelectronic property characterizations is implemented. The feasibility of mechanical and electrical probing manipulations on(More)
In this paper, studies on the transient behavior of thermocapillary convection flows, generated with a single IR laser beam of 1470 nm in wavelength, as a micromanipulation technique are presented. The transient regime was first simulated using COMSOL Multiphysics showing that the flows start having their toroidal shape in less than 100 ms. Then experiments(More)
Here we discuss a new design of a device developed for hand rehabilitation based on Soft Robotics. We based our work on the PneuNets, but with a different design approach. The resulting mechanism is operated in a Serious Game (SG) context in order to create a stimulating environment that enhances the rehabilitation process. We characterized the prototype(More)
In this paper, a closed-loop strategy for controlling the transient regime of Marangoni flows and thus to selectively manipulate and separate micro-particles is reported. Marangoni flows were generated by an infrared laser as a heat source. Simulations of the transient regime of Marangoni flows were performed with COMSOL Multiphysics to analyze the(More)
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