The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 1999
Filed:
Mar. 12, 1998
Toshihiko Sato, Cambridge, GB;
Haroon Ahmed, Cambridge, GB;
Hitachi Europe Limited, Maidenhead, GB;
Abstract
Nanometre scale particles (3) e.g. of Au are deposited on a Si substrate (2) with a SiO.sub.2 surface layer (1) provided with receptor sites (4) of a first electrical polarity by treatment with APTMS solution. The Au particles (3) have a surface charge (5) of a second opposite polarity e.g from surface adsorbed citrate ions, such that they are attracted to the surface sites on the substrate. The deposited Au particles are then released from the surface sites such that the particles move over the substrate and coalesce into a low dimensional aggregated structure. The aggregated structure may form at a surface irregularity on the surface of the substrate. The structure may be used in a quantum electronic device such as a single electron transistor.