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We introduce a method of motion control for bacterial microrobots using oxygen gradients. The bacteria (magnetotactic coccus strain MC-1) have a strong preference for a particular oxygen concentration and reverse swimming direction in order to remain at that oxygen concentration. At the same time, MC-1 consume oxygen, changing the dynamics of the system. We propose that we can use this behavior to...
This paper presents a hybrid bacteria and microparticles detection platform based on a CMOS technology. Vertical face to face microelectrode arrays are implemented onto CMOS chips by connecting the metal and via layers together. A CMOS post-processing procedure based on Deep Reactive Ion Etching (DRIE) is used to release the microelectrodes and to construct microchannels in between. With medium flow...
An integrated biosensor for the detection of micron-size biological entities using magnetotactic bacteria (MTB) being guided under the control of an external magnetic field of a few Gauss is briefly described. The proposed biosensor will be implemented onto a silicon substrate compatible with standard CMOS technologies. To validate the proposed concept, a microfluidic device and a microelectronic...
This paper proposes a novel micro-carrier based on magnetotactic bacteria (MTB). To confirm the feasibility of such carriers, the thrust force of the bacteria is evaluated. By measuring the swimming speed of MC-1 bacteria in an unbounded medium, a thrust of 4 pN generated by a single MC-1 bacterium is found. The effects on the MTB's swimming speed under the control of micro-electromagnets and influenced...
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