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Transport System for Ultra Small Objects

IP.com Disclosure Number: IPCOM000014136D
Original Publication Date: 2002-May-02
Included in the Prior Art Database: 2003-Jun-19
Document File: 1 page(s) / 41K

Publishing Venue

IBM

Abstract

Disclosed is a device for transporting nanoscale objects. The device consists of a thin solid sheet of molecules floating on a thin liquid film on a solid substrate. When a small object is placed on the solid sheet, which functions as a raft, the object can be transported to a new location by flowing air over it. To be able to transport nanoscale objects, the thickness of the raft and liquid film should be only a few nanometers. This can be achieved by immersing a silicon wafer in a solution of squalane dissolved in chloroform in a concentration of 1 gram/liter, then withdrawing the wafer at a speed of 3.5 mm/s. This procedure generates a liquid film of squalane, 2.6 nm thick, covered with little islands of solid squalane, 0.8 nm thick. These little islands of solid squalane can serve as molecular rafts for transporting small objects. Other types of materials are also possible for fabricating the solid rafts: Some of the methyl side groups of the squalane molecules could be replaced by

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Transport System for Ultra Small Objects

   Disclosed is a device for transporting nanoscale objects. The device consists of a thin solid sheet of molecules floating on a thin liquid film on a solid substrate. When a small object is placed on the solid sheet, which functions as a raft, the object can be transported to a new location by flowing air over it.

To be able to transport nanoscale objects, the thickness of the raft and liquid film should be only a few nanometers. This can be achieved by immersing a silicon wafer in a solution of squalane dissolved in chloroform in a concentration of 1 gram/liter, then withdrawing the wafer at a speed of 3.5 mm/s. This procedure generates a liquid film of squalane, 2.6 nm thick, covered with little islands of solid squalane, 0.8 nm thick. These little islands of solid squalane can serve as molecular rafts for transporting small objects.

Other types of materials are also possible for fabricating the solid rafts:

Some of the methyl side groups of the squalane molecules could be replaced by

acrylates that would cross link when exposed to UV or electron radiation. A nanometer thick layer of monomers could be floated directly on the liquid film then

cured in situ to form a cross-linked polymer layer. Sheets of graphite, a few atomic layers in thickness, could be fabricated to the desired

shape and then placed on the liquid film to serve as transport carriers.

To make sure that the rafts with their cargo get to the desired locatio...