skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Nanoscale relaxation oscillator

Patent ·
OSTI ID:986534

A nanoscale oscillation device is disclosed, wherein two nanoscale droplets are altered in size by mass transport, then contact each other and merge through surface tension. The device may also comprise a channel having an actuator responsive to mechanical oscillation caused by expansion and contraction of the droplets. It further has a structure for delivering atoms between droplets, wherein the droplets are nanoparticles. Provided are a first particle and a second particle on the channel member, both being made of a chargeable material, the second particle contacting the actuator portion; and electrodes connected to the channel member for delivering a potential gradient across the channel and traversing the first and second particles. The particles are spaced apart a specified distance so that atoms from one particle are delivered to the other particle by mass transport in response to the potential (e.g. voltage potential) and the first and second particles are liquid and touch at a predetermined point of growth, thereby causing merging of the second particle into the first particle by surface tension forces and reverse movement of the actuator. In a preferred embodiment, the channel comprises a carbon nanotube and the droplets comprise metal nanoparticles, e.g. indium, which is readily made liquid.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-05CH11231
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Number(s):
7,515,010
Application Number:
11/245,652; TRN: US201018%%30
OSTI ID:
986534
Country of Publication:
United States
Language:
English

References (18)

Coalescence of liquid drops journal December 1999
Critical Review: Adhesion in surface micromechanical structures journal January 1997
Surface tension and density measurements for indium and uranium using a sessile-drop apparatus with glow discharge cleaning journal June 1995
Nanofluidic Bubble Pump Using Surface Tension Directed Gas Injection journal May 2002
Non-carbon nanotubes journal May 1996
On-chip manipulation of free droplets journal December 2003
Carbon nanotubes as nanoscale mass conveyors journal April 2004
Surface-tension-driven microactuation based on continuous electrowetting journal June 2000
Microfluidic actuation by modulation of surface stresses journal January 2003
Nanowicks: Nanotubes as Tracks for Mass Transfer
  • Regan, B. C.
  • MOLECULAR NANOSTRUCTURES: XVII International Winterschool Euroconference on Electronic Properties of Novel Materials, AIP Conference Proceedings https://doi.org/10.1063/1.1628101
conference January 2003
A high-resolution high-frequency monolithic top-shooting microinjector free of satellite drops - part I: concept, design, and model journal October 2002
A tunable carbon nanotube electromechanical oscillator journal September 2004
Creating, transporting, cutting, and merging liquid droplets by electrowetting-based actuation for digital microfluidic circuits journal February 2003
Modeling leaky faucet dynamics journal June 1997
Self-Similar Chain of Metal Nanospheres as an Efficient Nanolens journal November 2003
Modelling of HREM and nanodiffraction for dislocation kinks and core reconstruction journal November 2000
Electrowetting-based actuation of liquid droplets for microfluidic applications journal September 2000
Electrowetting-based actuation of droplets for integrated microfluidicsElectronic supplementary information (ESI) available: six videos showing droplet flow, droplet dispensing and electrowetting. See http://www.rsc.org/suppdata/lc/b1/b110474h/ journal January 2002