Arrays of tiny conical tips that eject ionized materials could fabricate nanoscale devices cheaply
Luis Fernando Velásquez-García’s group at MIT’s Microsystems Technology Laboratories (MTL) develops dense arrays of microscopic cones that harness electrostatic forces to eject streams of ions.
The technology has a range of promising applications: depositing or etching features onto nanoscale mechanical devices; spinning out nanofibers for use in water filters, body armor, and “smart” textiles; or propulsion systems for fist-sized “nanosatellites.”
In the latest issue of the IEEE Journal of Microelectromechanical Systems, Velásquez-García, his graduate students Eric Heubel and Philip Ponce de Leon, and Frances Hill, a postdoc in his group, describe a new prototype array that generates 10 times the ion current per emitter that previous arrays did.
Ion current is a measure of the charge carried by moving ions, which translates directly to the rate at which particles can be ejected. Higher currents thus promise more-efficient manufacturing and more-nimble satellites.
The same prototype also crams 1,900 emitters onto a chip that’s only a centimeter square, quadrupling the array size and emitter density of even the best of its predecessors.
“This is a field that benefits from miniaturizing the components, because scaling down emitters implies less power consumption, less bias voltage to operate them, and higher throughput,” says Velásquez-García, a principal research scientist at MTL. “The topic we have been tackling is how we can make these devices operate as close as we can to the theoretical limit and how we can greatly increase the throughput by virtue of multiplexing, with massively parallel devices that operate uniformly.”
“In my opinion, the best nanosystems are going to be done by 3-D printing because it would bypass the problems of standard microfabrication,” Velásquez-García says. “It uses prohibitively expensive equipment, which requires a high level of training to operate, and everything is defined in planes. In many applications you want the three-dimensionality: 3-D printing is going to make a big difference in the kinds of systems we can put together and the optimization that we can do.”
The Latest on: Nanomanufacturing
via Google News
The Latest on: Nanomanufacturing
- Three Ways Nanotechnology Improves Manufacturingon January 17, 2020 at 12:18 pm
To put that into perspective, comparing a nanometer to a meter is like comparing the size of a marble to the size of the earth. Nanomanufacturing focuses on the development of scalable, high yield ...
- NANOMANUFACTURING CONFERENCE & EXHIBITSon December 9, 2019 at 4:00 pm
Peer networking, information sharing, and technology exchange among the world's nanomanufacturing leaders will be a key feature of the event.
- DOE Selects Projects To Advance Nanomanufacturing: Projects Will Improve Nanomaterials Production, Scale-up Manufacturing Processeson October 17, 2019 at 5:00 pm
The selected projects will advance the state of nanomanufacturing by improving the reliability of nanomaterials production and scaling-up manufacturing processes that use nanomaterials. DOE national ...
- From chaos, sticky orderon October 14, 2019 at 1:56 pm
“We use ‘liquid’ nanomanufacturing to convert most polymers into branched particles after dissolving the polymer and mixing the solution rapidly with another liquid,” says corresponding ...
- Simultaneous Design and Nanomanufacturing Speeds Up Fabrication: Method enhances broadband light absorption in solar cellson August 4, 2019 at 5:00 pm
An interdisciplinary team of researchers has used mathematics and machine learning to design an optimal material for light management in solar cells and then fabricated the nanostructured surfaces ...
- Global Nanomanufacturing Impact Assessment 2019 - Miniaturized Products with Multiple Capabilities Enables Innovationson June 17, 2019 at 9:47 am
DUBLIN, June 17, 2019 /PRNewswire/ -- The "Nanomanufacturing: Global Impact Assessment" report has been added to ResearchAndMarkets.com's offering. An increasing number of organizations are ...
- Nanomanufacturing Systems for mobile Computing and Energy Technologies (NASCENT)on December 5, 2018 at 4:00 pm
The NSF Engineering Research Center (ERC) for Nanomanufacturing Systems for Mobile Computing and Mobile Energy Technologies (NASCENT) develops high throughput, high yield and versatile ...
- Members of Illinois’ Nanomanufacturing Node Develop New Tool for Nanomanufacturingon September 27, 2018 at 11:07 am
That’s where Illinois’ Nanomanufacturing Node comes into play. The first of its kind, the NSF-funded nanoMFG node was awarded with a five-year grant in 2017 to advance the reliability, efficiency and ...
- Nucleation a boon to sustainable nanomanufacturingon September 19, 2018 at 6:08 am
"Knowing about nucleation empowers us to create nanomaterials and allows us to control nanoparticle properties and surface functionalization of materials, helping sustainable nanomanufacturing ...
- Nanomanufacturing facility to target next generation electronicson January 31, 2018 at 7:59 am
The Engineering and Physical Sciences Research Council has awarded £1.6m to the Advanced Technology Institute (ATI) and the 5G Innovation Centre at the University of Surrey to establish a hub that ...
via Bing News