Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International



Home > Press > New microtweezers may build tiny 'MEMS' structures

Purdue researchers have created a new type of microtweezers capable of manipulating objects to build tiny structures, print coatings to make advanced sensors, and grab and position live stem cell spheres for research. (Birck Nanotechnology Center photo)
Purdue researchers have created a new type of microtweezers capable of manipulating objects to build tiny structures, print coatings to make advanced sensors, and grab and position live stem cell spheres for research.

(Birck Nanotechnology Center photo)

Abstract:
A Compact Manually Actuated Micromanipulator

Bin-Da Chan, Farrukh Mateen, Chun-Li Chang, Kutay Icoz,
and Cagri A. Savran

This letter reports a compact, versatile, and user-friendly micromanipulator that uses an elastically deformable silicon microtweezer to grab microentities and a micrometer head for rotational manual actuation. The micro-/macroconnection is achieved via a graphite interface that results in a compact and portable design and placement on most translation stages. The system, which can operate in both air and liquid and transport objects between the two media, has a wide range of applications. We demonstrate but a few of them, including in situ construction of microstructures in 3-D, isolation and placement of individual microparticles on designated spots on sensors, on-demand microcontact printing of microparticles, and manipulation of live stem cell spheres. [2011-0237] Index Terms - Microgripper, micromanipulator, microstamping, microtweezer.

New microtweezers may build tiny 'MEMS' structures

West Lafayette, IN | Posted on January 17th, 2012

Researchers have created new "microtweezers" capable of manipulating objects to build tiny structures, print coatings to make advanced sensors, and grab and position live stem cell spheres for research.

The microtweezers might be used to assemble structures in microelectromechanical systems, or MEMS, which contain tiny moving parts. MEMS accelerometers and gyroscopes currently are being used in commercial products. A wider variety of MEMS devices, however, could be produced through a manufacturing technology that assembles components like microscopic Lego pieces moved individually into place with microtweezers, said Cagri Savran (pronounced Chary Savran), an associate professor of mechanical engineering at Purdue University.

"We've shown how this might be accomplished easily, using new compact and user-friendly microtweezers to assemble polystyrene spheres into three-dimensional shapes," he said.

Research findings were detailed in a paper that appeared online in December in the Journal of Microelectromechanical Systems, or JMEMS. The paper was written by Savran, mechanical engineering graduate students Bin-Da Chan and Farrukh Mateen, electrical and computer engineering graduate student Chun-Li Chang, and biomedical engineering doctoral student Kutay Icoz.

The new tool contains three main parts: a thimble knob from a standard micrometer, a two-pronged tweezer made from silicon, and a "graphite interface," which converts the turning motion of the thimble knob into a pulling-and-pushing action to open and close the tweezer prongs. No electrical power sources are needed, increasing the potential for practical applications. Other types of microtweezers have been developed and are being used in research. However, the new design is simpler both to manufacture and operate, Savran said.

The design contains a one-piece "compliant structure," which is springy like a bobby pin or a paperclip. Most other microtweezers require features such as hinges or components that move through heat, magnetism or electricity, complex designs that are expensive to manufacture and relatively difficult to operate in various media, he said.

The tweezers make it feasible to precisely isolate individual stem cell spheres from culture media and to position them elsewhere. Currently, these spheres are analyzed in large groups, but microtweezers could provide an easy way to study them by individually selecting and placing them onto analytical devices and sensors.

"We currently are working to weigh single micro particles, individually selected among many others, which is important because precise measurements of an object's mass reveal key traits, making it possible to identify composition and other characteristics," Savran said. "This will now be as easy as selecting and weighing a single melon out of many melons in a supermarket."

That work is a collaboration with the research group of Timothy Ratliff, the Robert Wallace Miller Director of Purdue's Center for Cancer Research.

The microtweezers also could facilitate the precision printing of chemical or protein dots onto "microcantilevers," strips of silicon that resemble tiny diving boards. The microcantilevers can be "functionalized," or coated with certain chemicals or proteins that attract specific molecules and materials. Because they vibrate at different frequencies depending on what sticks to the surface, they are used to detect chemicals in the air and water.

Generally, microcantilevers are functionalized to detect one type of substance by exposing them to fluids, Savran said. However, being able to microprint a sequence of precisely placed dots of different chemicals on each cantilever could make it possible to functionalize a device to detect several substances at once. Such a sensing technology also would require a smaller sample size than conventional diagnostic technologies, making it especially practical.

The new microtweezers are designed to be attached easily to "translation stages" currently used in research. These stages are essentially platforms on which to mount specimens for viewing and manipulating. Unlike most other microtweezers, the new device is highly compact and portable and can be easily detached from a platform and brought to another lab while still holding a micro-size object for study, Savran said.

The two-pronged tweezer is micromachined in a laboratory called a "clean room" with the same techniques used to create microcircuits and computer chips. The research was based at the Birck Nanotechnology Center in Purdue's Discovery Park.
Purdue has filed for a provisional patent on the design.

####

For more information, please click here

Contacts:
Writer:
Emil Venere
765-494-4709


Source:
Cagri A. Savran
765 494-8601

Copyright © Purdue University

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Virginia Tech physicists propose path to faster, more flexible robots: Virginia Tech physicists revealed a microscopic phenomenon that could greatly improve the performance of soft devices, such as agile flexible robots or microscopic capsules for drug delivery May 17th, 2024

Gene therapy relieves back pain, repairs damaged disc in mice: Study suggests nanocarriers loaded with DNA could replace opioids May 17th, 2024

Shedding light on perovskite hydrides using a new deposition technique: Researchers develop a methodology to grow single-crystal perovskite hydrides, enabling accurate hydride conductivity measurements May 17th, 2024

Oscillating paramagnetic Meissner effect and Berezinskii-Kosterlitz-Thouless transition in cuprate superconductor May 17th, 2024

MEMS

Bosch launches longevity program for industrial and IoT applications: High-performance accelerometer, IMU and pressure sensor with 10-year availability July 23rd, 2020

CEA-Leti Develops Tiny Photoacoustic-Spectroscopy System For Detecting Chemicals & Gases: Paper at Photonics West to Present Detector that Could Cost 10x Less Than Existing Systems and Prompt Widespread Use of the Technology February 4th, 2020

MEMS & Sensors Executive Congress Technology Showcase Finalists Highlight Innovations in Automotive, Biomedical and Consumer Electronics: MSIG MEMS & Sensors Executive Congress – October 22-24, 2019, Coronado, Calif. October 1st, 2019

ULVAC Launches Revolutionary PZT Piezoelectric Thin-film Process Technology and HVM Solution for MEMS Sensors/Actuators: Enabling Reliable, High-quality Film Production for Next Generation Devices August 16th, 2019

Nanomedicine

Virginia Tech physicists propose path to faster, more flexible robots: Virginia Tech physicists revealed a microscopic phenomenon that could greatly improve the performance of soft devices, such as agile flexible robots or microscopic capsules for drug delivery May 17th, 2024

Diamond glitter: A play of colors with artificial DNA crystals May 17th, 2024

Advances in priming B cell immunity against HIV pave the way to future HIV vaccines, shows quartet of new studies May 17th, 2024

New micromaterial releases nanoparticles that selectively destroy cancer cells April 5th, 2024

Sensors

Innovative sensing platform unlocks ultrahigh sensitivity in conventional sensors: Lan Yang and her team have developed new plug-and-play hardware to dramatically enhance the sensitivity of optical sensors April 5th, 2024

$900,000 awarded to optimize graphene energy harvesting devices: The WoodNext Foundation's commitment to U of A physicist Paul Thibado will be used to develop sensor systems compatible with six different power sources January 12th, 2024

A color-based sensor to emulate skin's sensitivity: In a step toward more autonomous soft robots and wearable technologies, EPFL researchers have created a device that uses color to simultaneously sense multiple mechanical and temperature stimuli December 8th, 2023

New tools will help study quantum chemistry aboard the International Space Station: Rochester Professor Nicholas Bigelow helped develop experiments conducted at NASA’s Cold Atom Lab to probe the fundamental nature of the world around us November 17th, 2023

Discoveries

Virginia Tech physicists propose path to faster, more flexible robots: Virginia Tech physicists revealed a microscopic phenomenon that could greatly improve the performance of soft devices, such as agile flexible robots or microscopic capsules for drug delivery May 17th, 2024

Diamond glitter: A play of colors with artificial DNA crystals May 17th, 2024

Finding quantum order in chaos May 17th, 2024

Advances in priming B cell immunity against HIV pave the way to future HIV vaccines, shows quartet of new studies May 17th, 2024

Announcements

Virginia Tech physicists propose path to faster, more flexible robots: Virginia Tech physicists revealed a microscopic phenomenon that could greatly improve the performance of soft devices, such as agile flexible robots or microscopic capsules for drug delivery May 17th, 2024

Diamond glitter: A play of colors with artificial DNA crystals May 17th, 2024

Finding quantum order in chaos May 17th, 2024

Oscillating paramagnetic Meissner effect and Berezinskii-Kosterlitz-Thouless transition in cuprate superconductor May 17th, 2024

Tools

First direct imaging of small noble gas clusters at room temperature: Novel opportunities in quantum technology and condensed matter physics opened by noble gas atoms confined between graphene layers January 12th, 2024

New laser setup probes metamaterial structures with ultrafast pulses: The technique could speed up the development of acoustic lenses, impact-resistant films, and other futuristic materials November 17th, 2023

Ferroelectrically modulate the Fermi level of graphene oxide to enhance SERS response November 3rd, 2023

The USTC realizes In situ electron paramagnetic resonance spectroscopy using single nanodiamond sensors November 3rd, 2023

Patents/IP/Tech Transfer/Licensing

Getting drugs across the blood-brain barrier using nanoparticles March 3rd, 2023

Study finds nanomedicine targeting lymph nodes key to triple negative breast cancer treatment: In mice, nanomedicine can remodel the immune microenvironment in lymph node and tumor tissue for long-term remission and lung tumor elimination in this form of metastasized breast cance May 13th, 2022

Metasurfaces control polarized light at will: New research unlocks the hidden potential of metasurfaces August 13th, 2021

Arrowhead Pharmaceuticals Announces Closing of Agreement with Takeda November 27th, 2020

Nanobiotechnology

Diamond glitter: A play of colors with artificial DNA crystals May 17th, 2024

Advances in priming B cell immunity against HIV pave the way to future HIV vaccines, shows quartet of new studies May 17th, 2024

New micromaterial releases nanoparticles that selectively destroy cancer cells April 5th, 2024

Good as gold - improving infectious disease testing with gold nanoparticles April 5th, 2024

Printing/Lithography/Inkjet/Inks/Bio-printing/Dyes

Presenting: Ultrasound-based printing of 3D materials—potentially inside the body December 8th, 2023

Simple ballpoint pen can write custom LEDs August 11th, 2023

Disposable electronics on a simple sheet of paper October 7th, 2022

Newly developed technique to improve quantum dots color conversion performance: Researchers created perovskite quantum dot microarrays to achieve better results in full-color light-emitting devices and expand potential applications June 10th, 2022

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project