Tech Briefs Magazine - June 2021 - MD-19

Associate Professor Dr. Shen Yajing developed a novel magnetic spray that can transform objects into millirobots
for biomedical applications. (Photo source: City University of Hong Kong)
tile " super-resolution " that allows it to
locate the stimuli's position as accurately
as possible. An efficient tactile super-resolution
algorithm uses deep learning to
achieve a 60-fold improvement of the
localization accuracy for contact position.
Such a tactile super-resolution algorithm
can help improve the physical resolution
of a tactile sensor array with the
least number of sensing units, thus re -
ducing the number of wirings and the
time required for signal transmitting.
By mounting the sensor at the fingertip
of a robotic gripper, the team showed
that robots can accomplish challenging
tasks. The robotic gripper stably grasped
fragile objects like an egg while an external
force tried to drag it away, and
threaded a needle via teleoperation. The
sensor can be easily extended to the
form of sensor arrays or even continuous
electronic skin that covers the whole
body of the robot.
The sensitivity and measurement
range of the sensor can be adjusted by
changing the magnetization direction of
the top layer (magnetic film) of the sensor
without changing the sensor's thickness.
This enables the e-skin to have different
sensitivity and measurement
range in different parts, just like human
skin. Also, the sensor has a much shorter
fabrication and calibration process compared
with other tactile sensors.
The sensor could be beneficial to
applications in the robotics field such as
adaptive grasping, dexterous manipulation,
texture recognition, smart prosthetics,
and human-robot interaction.
For more information, contact the Office of
the Vice President of Research & Technology
at vprt@cityu.edu.hk; +852 3442-6847.
Nanosized Foldable Robots
The machines fold themselves within 100 milliseconds and
can flatten and refold thousands of times.
Cornell University, Ithaca, New York
Afully functional nanosized robot
Motion Design, June 2021
Cov
ToC
requires electronic circuits, photovoltaics,
sensors, and antennas. But if the
robot needs to move, it must be able to
bend. Researchers have created micronsized
shape memory actuators that en -
able atomically thin two-dimensional
materials to fold themselves into 3D configurations.
All they require is a quick
jolt of voltage. And once the material is
bent, it holds its shape even after the
voltage is removed.
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Tech Briefs Magazine - June 2021

Table of Contents for the Digital Edition of Tech Briefs Magazine - June 2021

Tech Briefs Magazine - June 2021 - Intro
Tech Briefs Magazine - June 2021 - Sponsor
Tech Briefs Magazine - June 2021 - Band1
Tech Briefs Magazine - June 2021 - Band2
Tech Briefs Magazine - June 2021 - Cov1
Tech Briefs Magazine - June 2021 - Cov2
Tech Briefs Magazine - June 2021 - 1
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Tech Briefs Magazine - June 2021 - Cov3
Tech Briefs Magazine - June 2021 - Cov4
Tech Briefs Magazine - June 2021 - MD-Cov1
Tech Briefs Magazine - June 2021 - MD-Cov2
Tech Briefs Magazine - June 2021 - MD-1
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Tech Briefs Magazine - June 2021 - MD-3
Tech Briefs Magazine - June 2021 - MD-4
Tech Briefs Magazine - June 2021 - MD-5
Tech Briefs Magazine - June 2021 - MD-6
Tech Briefs Magazine - June 2021 - MD-7
Tech Briefs Magazine - June 2021 - MD-8
Tech Briefs Magazine - June 2021 - MD-9
Tech Briefs Magazine - June 2021 - MD-10
Tech Briefs Magazine - June 2021 - MD-11
Tech Briefs Magazine - June 2021 - MD-12
Tech Briefs Magazine - June 2021 - MD-13
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Tech Briefs Magazine - June 2021 - MD-19
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Tech Briefs Magazine - June 2021 - MD-24
Tech Briefs Magazine - June 2021 - MD-Cov3
Tech Briefs Magazine - June 2021 - MD-Cov4
Tech Briefs Magazine - June 2021 - ST-Cov1
Tech Briefs Magazine - June 2021 - ST-Cov2
Tech Briefs Magazine - June 2021 - ST-1
Tech Briefs Magazine - June 2021 - ST-2
Tech Briefs Magazine - June 2021 - ST-3
Tech Briefs Magazine - June 2021 - ST-4
Tech Briefs Magazine - June 2021 - ST-5
Tech Briefs Magazine - June 2021 - ST-6
Tech Briefs Magazine - June 2021 - ST-7
Tech Briefs Magazine - June 2021 - ST-8
Tech Briefs Magazine - June 2021 - ST-9
Tech Briefs Magazine - June 2021 - ST-10
Tech Briefs Magazine - June 2021 - ST-11
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Tech Briefs Magazine - June 2021 - ST-13
Tech Briefs Magazine - June 2021 - ST-14
Tech Briefs Magazine - June 2021 - ST-15
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Tech Briefs Magazine - June 2021 - ST-18
Tech Briefs Magazine - June 2021 - ST-19
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Tech Briefs Magazine - June 2021 - ST-37
Tech Briefs Magazine - June 2021 - ST-Cov4
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