Apparatus for analyzing characteristics of particulate with dielectrophoresis of particulate by applying angle-modulated wave and method for the same
AssigneeKochi University of Technology
InventorHiroshi Furusawa
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Abstract
The present invention provides a method for analyzing characteristics of a particulate, comprising: selecting at least one particulate in a fluid; positioning said selected particulate in the vicinity of a pair of electrodes; applying a programmed voltage signal for generating a spatially inhomogeneous electric field between said pair of electrodes; detecting the movement of the particulate while applying said programmed voltage signal to create a time-series data corresponding to said movement of the particulate; and analyzing the characteristics of said particulate based on said time-series data.
Claims40
An apparatus for analyzing characteristics of a particulate comprising:
- a chamber for receiving a suspension containing a particulate;
- a pair of electrodes positioned in said suspension;
- a voltage device for applying a programmed voltage signal comprising an angle-modulated waveform between the electrodes;
- a capturing device for capturing the area containing at least the tip of the electrode;
- a monitor for displaying a video data with said capturing device;
- a processing unit;
- and an input device for inputting an input data into said processing unit,
- wherein said pair of electrodes independently moves each other or moves together in the fluid,
- wherein said monitor displays said video data with a recording time of said capturing device,
- wherein said processing unit calculates a boundary frequency at which a dielectrophoretic force to a particulate is switched from an attractive force to a repulsive force on the basis of the input data through said input device, and
- wherein said input data is a stagnant time during which the particulate stays in the vicinity of one of said electrodes on the basis of the video data of said monitor and the recording time data of the capturing device.
A method for analyzing characteristics of a particulate, comprising:
- selecting at least one particulate in a fluid;
- positioning said selected particulate in the vicinity of a pair of electrodes;
- applying a programmed voltage signal comprising an angle-modulated waveform for generating a spatially inhomogeneous electric field between said pair of electrodes;
- detecting the movement of the particulate while applying said programmed voltage signal to create a time-series data corresponding to said movement of the particulate;
- and
- analyzing the characteristics of said particulate based on said time-series data,
- wherein said time-series data is a video data by capturing said movement of the particulate,
- wherein said video data further comprises a recording time data indicating capturing period,
- wherein said step of analyzing the characteristics of the particulate includes:
- displaying said video data with said recording time data in a monitor;
- determining a stagnant time during which the selected particulate stays in the vicinity of one of said electrodes on the basis of said video data displayed in said monitor;
- and
- calculating on the basis of the determined time a boundary frequency at which a dielectrophoretic force to said selected particulate is switched from an attractive force to a repulsive force.
Dependencies are inferred from the claim text.