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Micro-drive Array for Chronic in vivo Recording: Drive Fabrication

Micro-drive Array for Chronic in vivo Recording: Drive Fabrication

Published on: April 20, 2009

Programmable micrometer-sized motor array based on live cells.

Shuangxi Xie¹, Xiaodong Wang, Niandong Jiao

¹State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Science, Shenyang, 10016, China. ndjiao@sia.cn lqliu@sia.cn.

|May 18, 2017

Summary

This summary is machine-generated.

Optically induced dielectrophoresis (ODEP) effectively traps and manipulates fast-swimming microorganisms like Chlamydomonas reinhardtii. This technique enables the creation of rotating micro-arrays for bio-micropumping applications.

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Area of Science:

Microfluidics
Biophysics
Biotechnology

Background:

Manipulating motile microorganisms is crucial for various scientific and medical applications.
High swimming speeds of microorganisms present significant challenges for precise control and manipulation.
Existing methods often struggle with the dynamic nature of motile cells.

Purpose of the Study:

To demonstrate the efficacy of optically induced dielectrophoresis (ODEP) for trapping and manipulating fast-swimming microorganisms.
To investigate the formation and control of micro-organism arrays using ODEP.
To explore the potential of ODEP-controlled cell arrays as bio-actuators.

Main Methods:

Utilized optically induced dielectrophoresis (ODEP) to trap and manipulate Chlamydomonas reinhardtii cells.
Investigated cell manipulation at swimming speeds exceeding 100 μm s⁻¹.
Controlled cell rotation frequency (50–120 rpm) by adjusting optical intensity.
Assessed the role of functional flagella in cell rotation.

Main Results:

ODEP successfully trapped and manipulated Chlamydomonas reinhardtii cells, even at high speeds (>100 μm s⁻¹).
Formed stable, micrometer-sized arrays of live Chlamydomonas reinhardtii cells.
Achieved reversible control over cell rotation frequency via optical intensity modulation.
Confirmed the essential role of functional flagella in the observed rotation.

Conclusions:

ODEP is a powerful technique for precise manipulation of fast-swimming microorganisms.
Programmable, rotating cell arrays can be generated using ODEP.
These bio-actuators show promise for applications like bio-micropumping in microfluidic devices.