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Microhand for biological applications
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View: Figures


Image of FIG. 1.
FIG. 1.

Schematic drawing of a microhand device with four fingers articulated by balloon joints, mimicking the flexion and extension capabilities of the human hand in microscale. (b) The actuation mechanism is illustrated in a simplified centimeter-scale experiment, in which the inflating of the balloons (plastic bags) shortens the distance between the attachment points, drawing up the Plexiglas phalanges.

Image of FIG. 2.
FIG. 2.

Microhand fabrication process. (a) shows a three-dimensional schematic of one finger. For simplicity, only two phalanges and two balloon joints are shown. (b) illustrates the process flow in the cross section of (a).

Image of FIG. 3.
FIG. 3.

Sequenced pictures show the full flexion and extension of the microhand as well as its operation on microbiological objects. (a) The microhand is flexed at 0, 160, and . (b) The microhand grabs a capelin egg ( in diameter) and detaches it from its mass. The detachment force is at least . The microhand (b.1) approaches the target, (b.2) encloses to gently hold a target, and (b.3) detaches a single target and moves away. (c) The microhand manipulates the fatty tissue from the mucosal layer of the swine stomach fixed on a slide. The microhand holds the fatty tissue and pulls it away. A strand of elastic fibers binding the fatty tissue is exposed during this action. The long and thin fibers, forming intercellular matrices within the fatty tissue, hold the cells together. Further retraction of the microhand breaks the connective fibers apart. A larger microhand ( fist) was used for this task. The microhand (c.1) grasps fatty tissue, (c.2) moves away and pulls the connective fiber, and (c.3) breaks the fiber apart.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Microhand for biological applications