Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Responsive to non-optical – non-electrical signal
Reexamination Certificate
2007-04-24
2007-04-24
Pert, Evan (Department: 2826)
Active solid-state devices (e.g., transistors, solid-state diode
Field effect device
Responsive to non-optical, non-electrical signal
C257S213000, C257S069000, C257S014000, C257S017000, C257S020000, C257S024000, C257S030000, C257S039000, C257S414000, C257S624000
Reexamination Certificate
active
11015043
ABSTRACT:
A single-electron transistor includes a projecting feature, such as a pyramid, that projects from a face of a substrate. A first electrode is provided on the substrate face that extends onto the projecting feature. A second electrode is provided on the substrate face that extends onto the projecting feature and that is spaced apart from the first electrode. Accordingly, the geometric configuration of the projecting feature can define the spacing between the first and second electrodes. At least one nanoparticle is provided on the projecting feature between the first and second electrodes. The single-electron transistors may be fabricated by forming a projecting feature on a substrate that projects from a face thereof, forming a first electrode on the substrate face that extends onto the projecting feature, forming a second electrode on the substrate face that extends onto the projecting feature and that is spaced apart from the first electrode, and placing at least one nanoparticle on the projecting feature between the first and second electrodes. The single-electron transistor fabricated in this way may be used as a detector for biomolecular reactions by attaching a probe molecule to the surface of the nanoparticle and measuring changes in the electronic signal obtained from the device.
REFERENCES:
patent: 5828076 (1998-10-01), Gossner et al.
patent: 6653653 (2003-11-01), Brousseau, III
patent: 6958216 (2005-10-01), Kelley et al.
patent: 2004/0113144 (2004-06-01), Brousseau, III
Dillon & Yudell LLP
Erdem Fazli
Ng Antony P.
Pert Evan
Quantum Logic Devices, Inc.
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