An Electrostatic Sorting Device For Microparts

Fantoni, Gualtiero; Porta, Marcello; Santochi, Marco

doi:10.1016/j.cirp.2007.05.007

Cited by 6 publications

(10 citation statements)

References 7 publications

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“…The electrostatic sorter developed by Fantoni et al [3] was designed for sorting metallic spheres with a diameter of 1.2-1.4 mm. The sorter is composed of an upper electrode with 23 tips and a lower electrode that is a vibration platform (Fig.…”

Section: Sorters Devices For Microassemblymentioning

confidence: 99%

“…The electrostatic principle, deeply used in grasping [10][11][12][13][14] and feeding [15][16][17], has been also exploited in sorting [18,19,3]. The device developed by Bö hringer et al [18] sorts and positions four microparts by a combined use of fringing electrostatic fields and vibration.…”

Section: Sorters Devices For Microassemblymentioning

confidence: 99%

“…A high voltage applied between the electrodes generates, on the entire platform, a continuous force field with electrostatic potential minima on the tip axes. Up to 23 spheres were sorted by a combination of vibration and electrostatic potential field (please refer to Fantoni et al [3] for more details). Such electrostatic sorter was also successfully inserted in an assembly microfactory systems developed by Santochi et al [20].…”

Section: Sorters Devices For Microassemblymentioning

confidence: 99%

“…In fact, parts with dimension of few hundreds microns tend to stick to each other due to electrostatic and capillary forces acting among them. Then, it is very difficult to grasp the parts singularly as highlighted by many authors [3,4].…”

Section: Introductionmentioning

confidence: 98%

“…The paper proposes an integrated and compact device exploiting the electrostatic sorter concept developed in Fantoni et al [3] and the capillary gripper approach studied in Lambert et al. [4].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

An integrated and compact device for microassembly exploiting electrostatic sorting and capillary grasping

Porta

Fantoni

Lambert

2010

CIRP Journal of Manufacturing Science and Technology

Self Cite

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Section: Sorters Devices For Microassemblymentioning

confidence: 99%

Section: Sorters Devices For Microassemblymentioning

confidence: 99%

Section: Sorters Devices For Microassemblymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

An integrated and compact device for microassembly exploiting electrostatic sorting and capillary grasping

Porta

Fantoni

Lambert

2010

CIRP Journal of Manufacturing Science and Technology

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Humidity dependence of electrostatic pick-and-place operation of a micro dielectric particle considering surface conductivity and capillary condensation

Fujiwara

Iguchi

Takahashi

et al. 2018

Journal of Applied Physics

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Relative humidity dependence on electrostatic pick-and-place operation is investigated to improve the reliability of micro-manipulation. The manipulation system consists of three elements: a conductive probe as a manipulator, a conductive plate as a substrate, and a dielectric particle as the target object for manipulation. To pick up/place the particle, a rectangular pulse voltage is applied to the probe. Capillary condensation at the particle-plate interface is theoretically considered to evaluate a detachment voltage (the voltage to detach the particle). Surface conductivity of the particle is theoretically considered to evaluate a detachment time (the time for detaching the particle). Experiments are conducted in relative humidities of 30%, 40%, 50%, and 60% by using a soda-lime glass particle with a diameter of 30 μm. It is clarified that the detachment voltage increases and the detachment time decreases by increasing relative humidity. The particle can be successfully picked up/placed by clarifying the effect of relative humidity on the detachment voltage and the detachment time. This knowledge, relative humidity dependence on electrostatic pick-and-place operation, will contribute to micro-fabrication technology by enhancing adaptability in various atmospheric conditions.

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The effect of surface conductivity and adhesivity on the electrostatic manipulation condition for dielectric microparticles using a single probe

Fujiwara¹,

Hemthavy²,

Takahashi³

et al. 2016

J. Micromech. Microeng.

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By clarifying the effect of surface conductivity and adhesivity on the electrostatic manipulation condition, a dielectric particle made of any material can be manipulated with surface conductivity. The manipulation system consists of three elements: a conductive probe as a manipulator, a conductive plate as a substrate, and a dielectric particle as the target object for manipulation. The particle can be successfully picked up/placed if a rectangular pulse voltage is applied between the probe and the plate. Four kinds of particle materials are used in the experiment: silica, soda-lime glass, polymethyl methacrylate coated by conductive polymer, and polystyrene coated by surfactant. The radius of each particle is 15 μm. A first-order resistor-capacitor (RC) circuit model is adopted to describe the effect of surface conductivity and adhesivity on the manipulation condition. The manipulation system is modeled as a series circuit consisting of a resistor and a capacitor by considering the surface conductivity. A detachment voltage is defined as the capacitance voltage to detach the particle adhered to the plate or probe. Parameters of the RC model, surface resistance, surface capacitance and detachment voltage are identified by a simulation and measurements.To verify the RC model, the particle's behavior is observed by a high-speed camera, and the electrical current is measured by an electrometer. A manipulation experiment is demonstrated to show the effectiveness of the model. The particle reaction is observed for each duration and magnitude of the pulse voltage for the manipulation. The optimum pulse voltage for successful manipulation is determined by the parameters of the RC model as the standard. This knowledge is expected to expand the possibility of micro-fabrication technology.

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An Electrostatic Sorting Device For Microparts

Cited by 6 publications

References 7 publications

An integrated and compact device for microassembly exploiting electrostatic sorting and capillary grasping

An integrated and compact device for microassembly exploiting electrostatic sorting and capillary grasping

Humidity dependence of electrostatic pick-and-place operation of a micro dielectric particle considering surface conductivity and capillary condensation

The effect of surface conductivity and adhesivity on the electrostatic manipulation condition for dielectric microparticles using a single probe

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