Apparatus for dispensing material

Details Apparatus for dispensing material Apparatus for dispensing material

2011-07-05

2011-07-05

Caldarola, Glenn (Department: 1771)

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

C977S762000, C977S888000, C977S890000

Reexamination Certificate

active

07972560

ABSTRACT:
An apparatus capable of dispensing drops of material with volumes on the order of zeptoliters is described. In some embodiments of the inventive pipette the size of the droplets so dispensed is determined by the size of a hole, or channel, through a carbon shell encapsulating a reservoir that contains material to be dispensed. The channel may be formed by irradiation with an electron beam or other high-energy beam capable of focusing to a spot size less than about 5 nanometers. In some embodiments, the dispensed droplet remains attached to the pipette by a small thread of material, an atomic scale meniscus, forming a virtually free-standing droplet. In some embodiments the droplet may wet the pipette tip and take on attributes of supported drops. Methods for fabricating and using the pipette are also described.

REFERENCES:
patent: 6149815 (2000-11-01), Sauter
patent: 6670607 (2003-12-01), Wood et al.
patent: 6864480 (2005-03-01), Staats
patent: 7334881 (2008-02-01), Punsalan et al.
patent: 2004/0115830 (2004-06-01), Touzov
patent: 2005/0266149 (2005-12-01), Henderson et al.
patent: 2006/0115971 (2006-06-01), Bau et al.
C. Journet and P. Bernier, Production of Carbon Nanotubes, 67 Appl. Phys. A 1-9 (1998).
J.-Y. Chang et al., Opening and Thinning of Multiwall Carbon Nanotubes in Supercritical Water, 363 Chem. Phys. Lett. 583-590 (2002).
F. Banhart et al., Carbon Nanotubes Under Electron Irradiation: Stability of the Tubes and Their Action as Pipes for Atom Transport, 71 Phys. Rev. B 241408-1-241408-4 (2005).
A. Celik-Aktas et al., Electron Beam Machining of Nanometer-Sized Tips from Multiwalled Boron Nitride Nanotubes, 102 J. Appl. Phys. 024310-1-024310-5 (2007).
Lanzara research group webpage, available at http://www.physics.berkeley.edu/research/lanzara/research/Graphite.html (last visited Aug. 9, 2010).
Sutter, et al., “Dispensing and Surface-Induced Crystallization of Zeptolitre Liquid Metal-Alloy Drops”, Nature Materials, vol. 6, May 2007, pp. 363-366.
Barton, et al., “Mass-Limited Growth in Zeptoliter Beakers: A General Approach for the Synthesis of Nanocrystals”, Nano Letters, vol. 4, No. 8, 2004, pp. 1525-1528.
Hamra, et al., “Near-Field Optical Zeptoliter pH Sensing At & Above Surfaces”, Microsc Microanal, 13 (Suppl 2), 2007.
Meister, et al., “Nanodispenser for Attoliter Volume Deposition Using Atomic Force Microscopy Probes Modified by Focused-Ion-Beam Milling”, Applied Physics Letters, vol. 85, No. 25, Dec. 20, 2004, pp. 6260-6262.
Banhart, F., “Irradiation Effects in Carbon Nanostructures”, Rep. Prof. Phys., 62, 1999, pp. 1194-1199.
Sun, et al., “Carbon Nanotubes as High-Pressure Cylinders and Nanoextruders”, Science, vol. 312, May 26, 2006, pp. 1199-1202.

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