Nanotechnology Now

Our NanoNews Digest Sponsors



Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > R&D Profile: Integrated Thermal Modulation and Deflection of Viscous Microjets with Applications to Continuous Inkjet Printing: E. Furlani, Eastman Ko

CMOS/MEMS droplet generator/deflector: a) device operation, b) experimental droplet deflection, c) fabricated device
CMOS/MEMS droplet generator/deflector: a) device operation, b) experimental droplet deflection, c) fabricated device

Abstract:
Microfluidic devices are finding increasing use in a broad range of applications that involve the production and controlled delivery of micro-droplets. The most notable and commercially successful of these is inkjet printing wherein streams of picoliter-sized drops are ejected at high repetition rates onto a media to render an image.

R&D Profile: Integrated Thermal Modulation and Deflection of Viscous Microjets with Applications to Continuous Inkjet Printing: E. Furlani, Eastman Ko

Boston, MA | Posted on May 22nd, 2008

Overview Courtesy of Dr. Edward P. Furlani, Senior Principal Scientist, Device Physics and Simulation, Eastman Kodak Research Laboratories

Dr. Furlani is a featured speaker at next month's NSTI Nanotech 2008 conference

Researchers at Eastman Kodak have recently developed a novel CMOS/MEMS microfluidic device that enables the controlled production and redirection of streams of picoliter-sized droplets at frequency rates in the hundreds of kilohertz range [1]. This device consists of a pressurized reservoir that feeds a micro-nozzle manifold with hundreds of active orifices, each of which produces a continuous jet of fluid. An integrated cylindrical blocking structure is suspended beneath each orifice as shown in Fig. 1. This structure splits the flow from the reservoir into two opposing flows that merge immediately beneath an orifice to form the jet. Each microjet is subjected to thermal modulation as it exits the orifice, which causes the formation of droplets downstream. Controlled thermal modulation is achieved using individually addressable resistive heater elements that are integrated into the nozzle plate around each orifice, and also into the suspended blocking structure. The heaters are configured to enable symmetric or asymmetric heating. Modulated symmetric heating produces a straight stream of droplets whereas asymmetric heating causes the stream to deflect as shown in Fig. 1 (a) and (b).

The ability to generate and redirect droplets at the microscale is useful for numerous applications including continuous inkjet printing in which only a fraction of the generated droplets are used to render an image; unused droplets are guttered and recirculated to the reservoir. The integrated CMOS-based thermal modulation and deflection capability of this novel device represents distinct advantages over conventional continuous inkjet printing systems that rely on piezoelectric driven droplet generation and electrostatic deflection that requires charged droplets. The advantages of this technology include a high level of integration, individually addressable orifices, which enable selective droplet generation and deflection at each orifice, low power consumption, and high reliability with low cost due to microfabrication processing. Further work is planned to characterize the performance of the device for various fluids and to increase the frequency response and resolution of the droplet generation.

[1] C.N. Delametter, J.M. Chwalek, and D.P. Trauernicht, "Deflection Enhancement for Continuous Ink Jet printers," U.S.Patent 6,497,510, Issued Dec. 24, 2002. [2] E. P. Furlani, "Temporal instability of viscous liquid microjets with spatially varying surface tension," J. Phys. A: Math. and Gen. 38, 263-276, 2005. [3] E. P. Furlani, B. G. Price, G. Hawkins, and A. G. Lopez, "Thermally Induced Marangoni Instability of Liquid Microjets with Application to Continuous Inkjet Printing", Proc. NSTI Nanotechnology Conference, 2006. [4] E. P. Furlani and K. C. Ng, "Numerical Analysis of Nonlinear Deformation and Breakup of Slender Microjets with Application to Continuous Inkjet Printing", Proc. NSTI Nanotechnology Conference, 2007.

####

About NSTI
The Nano Science and Technology Institute (NSTI) is chartered with the promotion and integration of nano and other advanced technologies through education, technology and business development. NSTI accomplishes this mission through its offerings of continuing education programs, scientific and business publishing and community outreach. NSTI produces the annual Nanotech conference and trade show, the most comprehensive international nanotechnology convention in the world. NSTI also produces the semi-annual Nanotech Venture, Nanotech Industrial Impact Workshop, Nano Impact Summit and the Nanotech Course Series in the US and Europe. NSTI was founded in 1997 as a result of the merger between various scientific societies, and is headquartered in Cambridge, Massachusetts with additional offices in California and Switzerland.

For more information, please click here

Contacts:
Sarah Wenning
696 San Ramon Valley Blvd., Ste. 423
Danville, CA 94526
Ph: (925) 901-4959
Fax: (925) 886-8461


Copyright © NSTI

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

Atom-thick CCD could capture images: Rice University scientists develop two-dimensional, light-sensitive material December 20th, 2014

Oregon researchers glimpse pathway of sunlight to electricity: Collaboration with Lund University uses modified UO spectroscopy equipment to study 'maze' of connections in photoactive quantum dots December 19th, 2014

Instant-start computers possible with new breakthrough December 19th, 2014

Aculon Hires New Business Development Director December 19th, 2014

Microfluidics/Nanofluidics

“Line dancing bacteria win the 2014 Dolomite and Lab on a Chip Video Competition” December 16th, 2014

Dolomite launches Mitos Dropix® Droplet Splitting System December 1st, 2014

The mysterious 'action at a distance' between liquid containers November 26th, 2014

“Dolomite’s Resealable Chip Interface offers easy access to microfluidic chip surface” November 10th, 2014

MEMS

MEMS Industry Group's 10th Annual Executive Conference Showcases Rapid Innovation in MEMS/Sensors: Emphasizes Spirit of Collaboration, Supporting First Open-Source Algorithm Community, New Standardization Efforts November 10th, 2014

MEMS & Sensors Technology Showcase: Finalists Announced for MEMS Executive Congress US 2014 October 23rd, 2014

IEEE International Electron Devices Meeting To Celebrate 60th Anniversary as The Leading Technical Conference for Advanced Semiconductor Devices September 18th, 2014

Carbyne morphs when stretched: Rice University calculations show carbon-atom chain would go metal to semiconductor July 21st, 2014

Announcements

Atom-thick CCD could capture images: Rice University scientists develop two-dimensional, light-sensitive material December 20th, 2014

Oregon researchers glimpse pathway of sunlight to electricity: Collaboration with Lund University uses modified UO spectroscopy equipment to study 'maze' of connections in photoactive quantum dots December 19th, 2014

Instant-start computers possible with new breakthrough December 19th, 2014

Aculon Hires New Business Development Director December 19th, 2014

Events/Classes

Bruker Introduces BioScope Resolve High-Resolution BioAFM System: Featuring PeakForce Tapping for Quantitative Bio-Mechanical Property Mapping December 16th, 2014

TCL Launches World’s Most Advanced TV in the World’s Largest Market: New Quantum Dot TVs with Color IQ™ Optics Deliver OLED-Quality Color at a Fraction of the Price December 15th, 2014

Stanford team combines logic, memory to build a 'high-rise' chip: Today circuit cards are laid out like single-story towns; Futuristic architecture builds layers of logic and memory into skyscraper chips that would be smaller, faster, cheaper -- and taller December 15th, 2014

PETA science consortium to present at Society for Risk Analysis meeting December 10th, 2014

Printing/Lithography/Inkjet/Inks

Nanoshaping method points to future manufacturing technology December 11th, 2014

New technique allows low-cost creation of 3-D nanostructures December 8th, 2014

SEMATECH Reports Significant Progress in EUV Resist Outgas Testing: Technologists from SEMATECH and JSR demonstrate outgas test results that further enable EUV lithography for high-volume manufacturing readiness December 3rd, 2014

Canatu Launches CNB In-Mold Film for Transparent Touch on 3D Surfaces –in Cars, Household Appliances, Wearables, Portables November 20th, 2014

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




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More










ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE