公开(公告)号：DE60014461T2

公开(公告)日：2006-03-09

申请号：DE60014461

申请日：2000-01-19

Applicant: LUCENT TECHNOLOGIES INC

Inventor： JIN SUNGHO ,  KOCHANSKI GREGORY PETER ,  ZHU WEI

IPC: B01J20/20 ,  C01B3/00 ,  C01B31/02 ,  H01J1/30 ,  H01J1/304 ,  H01J9/02 ,  H01J23/05 ,  H01J25/38 ,  H01J29/04 ,  H01J31/12

公开(公告)号：CA2315132C

公开(公告)日：2004-07-27

申请号：CA2315132

申请日：2000-08-04

Applicant: LUCENT TECHNOLOGIES INC ,  UNIV NORTH CAROLINA

Inventor： ZHOU OTTO ,  ZHU WEI ,  BOWER CHRISTOPHER A

IPC: B82B3/00 ,  C01B31/02 ,  H01J1/304 ,  H01J9/02 ,  C23C16/02 ,  C23C16/26

Abstract: A method for fabricating adherent, patterned carbon nanotube films is provided. According to the invention, a substrate is patterned with a carbide-forming material, a carbon-dissolving material, or a low melting point metal. Carbon nanotubes are then deposited onto the patterned substrate, but have relatively poor adhesion to either the substrate material or the patterned material. The substrate is then annealed, typically in vacuum, at a temperature dependent on the particular patterning material, e.g., a temperature at which carbide formation occurs, at which carbon dissolution occurs, or at which the low melting point metal melts. The annealing thereby provides an adherent nanotube film over the patterned areas, while the nanotubes deposited onto the non-patterned areas are easily removed, e.g., by blowing, rubbing, brushing and/or ultrasonication in a solvent such as methanol.

公开(公告)号：DE69709043T2

公开(公告)日：2002-08-22

申请号：DE69709043

申请日：1997-11-11

Applicant: LUCENT TECHNOLOGIES INC

Inventor： JIN SUNGHO ,  VAN DOVER ROBERT BRUCE ,  NEMCHIK JOSEPH MICHAEL ,  ZHU WEI

IPC: H01F17/00 ,  H01F3/10 ,  H01F17/04 ,  H01F19/04 ,  H01F19/06 ,  H01F38/02

Abstract: Embodiments of the invention include a transformer device (10) having a saturation region for limiting ingress noise and other noise. The transformer comprises a magnetic core (28), an input coil (32) and an output coil (34) arranged so that the output signal caused by the magnetic linkage between the input and output coils through the magnetic core is based on the magnitude of the input signal. According to an embodiment of the invention, the magnetic core includes a saturation region (42) that limits the output signal regardless of the magnitude of the input signal once the saturation region reaches its saturation magnetization state. The saturation region comprises a reduced saturation magnetization level caused by a geometrically constricted region of the magnetic core or, alternatively, by a modified, magnetic-equivalent region having properties similar to a geometrically constricted region.

公开(公告)号：CA2351037A1

公开(公告)日：2002-02-04

申请号：CA2351037

申请日：2001-06-19

Applicant: LUCENT TECHNOLOGIES INC ,  TELEDYNE TECH INC

Inventor： GOREN YEHUDA ,  JIN SUNGHO ,  KOCHANSKI GREGORY P ,  ZHU WEI

IPC: H01J9/02 ,  H01J21/10 ,  H01J23/04 ,  H01J23/06 ,  H01J29/06 ,  H03F3/189

Abstract: An improved gridded microwave tube is provided, the tube containing a cold cathode, an anode, and a grid located between the anode and cathode. In one embodiment, the cold cathode has a refractory metal substrate and carbon nanotube emitters, the emitters having a diameter of 1 to 300 nm and a length of 0.05 to 100 .mu.m. The grid-cathode spacing is 1 to 100 .mu.m, the grid contains apertures having a maximum dimension of 0.5 to 100 .mu.m, and the grid thickness is 0.5 to 100 .mu.m. Emission from the cathode directly onto the grid material itself, which undesirably heats the grid, is reduced by either (a) the presence of a shadow mask between the grid and the emitters or (b) selective formation of the emitters in locations that correspond to the grid apertures. The microwave tube operates at a frequency of greater than 0.5 GHz, advantageously greater than 2 GHz.

公开(公告)号：AU6543000A

公开(公告)日：2001-04-26

申请号：AU6543000

申请日：2000-10-11

Applicant: LUCENT TECHNOLOGIES INC

Inventor： FILAS ROBERT WILLIAM ,  ZHU WEI ,  KOCHANSKI GREGORY PETER ,  JIN SUNGHO

IPC: B82B1/00 ,  C01B31/02 ,  H01J1/30 ,  H01J1/304 ,  H01J9/02 ,  H01J23/04 ,  H01J29/04 ,  H01J31/12 ,  H01J19/24

公开(公告)号：AU1251500A

公开(公告)日：2000-07-27

申请号：AU1251500

申请日：2000-01-20

Applicant: LUCENT TECHNOLOGIES INC

Inventor： JIN SUNGHO ,  ZHU WEI ,  KOCHANSKI GREGORY PETER

IPC: B01J20/20 ,  C01B3/00 ,  C01B31/02 ,  H01J1/304 ,  H01J9/02 ,  H01J23/05 ,  H01J25/38 ,  H01J29/04 ,  H01J31/12 ,  B82B1/00 ,  B82B3/00 ,  H01J19/24

公开(公告)号：DE60026240T2

公开(公告)日：2006-11-23

申请号：DE60026240

申请日：2000-08-07

Applicant: LUCENT TECHNOLOGIES INC ,  UNIV NORTH CAROLINA

Inventor： BOWER CHRISTOPHER ANDREW ,  ZHOU OTTO ,  ZHU WEI

IPC: B82B3/00 ,  H01J9/02 ,  C01B31/02 ,  H01J1/304

Abstract: A method for fabricating adherent, patterned carbon nanotube films is provided. According to the invention, a substrate is patterned with a carbide-forming material, a carbon-dissolving material, or a low melting point metal. Carbon nanotubes are then deposited onto the patterned substrate, but have relatively poor adhesion to either the substrate material or the patterned material. The substrate is then annealed, typically in vacuum, at a temperature dependent on the particular patterning material, e.g., a temperature at which carbide formation occurs, at which carbon dissolution occurs, or at which the low melting point metal melts. The annealing thereby provides an adherent nanotube film over the patterned areas, while the nanotubes deposited onto the non-patterned areas are easily removed, e.g., by blowing, rubbing, brushing and/or ultrasonication in a solvent such as methanol.

公开(公告)号：DE69900076D1

公开(公告)日：2001-05-17

申请号：DE69900076

申请日：1999-03-02

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHIEN-SHING PAI ,  ZHU WEI

IPC: C23C14/06 ,  H01L21/312 ,  H01L21/314 ,  H01L21/768 ,  H01L23/522 ,  C23C14/22 ,  H01L21/00

Abstract: Ion beam deposition, using a carbon- and fluorine-containing source or sources, is used to form a fluorinated diamond-like carbon layer in a device, the FDLC layer exhibiting a dielectric constant of 3.0 or less along with a thermal stability of at least 400 DEG C. During the ion beam deposition, due to the unique nature of carbon chemistry, the carbon atoms combine at the substrate surface to form all possible combinations of sp , sp and sp bonds. However, ion beam etching occurs along with deposition, such that atoms of the weaker carbon structures - carbyne and graphite - are removed preferentially. This leads to a buildup of a diamond-like, sp -bonded structure with fluorine atoms, it is believed, substituted for some carbon atoms within the structure, this structure providing the desirable properties of the layer.

公开(公告)号：CA2322254A1

公开(公告)日：2001-04-18

申请号：CA2322254

申请日：2000-10-04

Applicant: LUCENT TECHNOLOGIES INC

Inventor： JIN SUNGHO ,  ZHU WEI ,  KOCHANSKI GREGORY P ,  FILAS ROBERT WILLIAM

IPC: B82B1/00 ,  C01B31/02 ,  H01J1/30 ,  H01J1/304 ,  H01J9/02 ,  H01J23/04 ,  H01J29/04 ,  H01J31/12 ,  H01L23/00 ,  G09F9/30

Abstract: An improved process for fabricating emitter structures from nanowires, wherein the nanowires are coated with a magnetic material to allow useful alignment of the wires in the emitter array, and techniques are utilized to provide desirable protrusion of the aligned nanowires in the final structure. In one embodiment, nanowires at least partially coated by a magnetic material are provided, the nanowires having an average length of about 0.1 .mu.m to about 10,000 .mu.m. The nanowires are mixed in a liquid medium, and a magnetic field is applied to align the nanowires. The liquid medium is provided with a precursor material capable of consolidation into a solid matrix, e.g., conductive particles or a metal salt, the matrix securing the nanowires in an aligned orientation. A portion of the aligned nanowires are exposed, e.g., by etching a surface portion of the matrix material, to provide desirable nanowire tip protrusion.

公开(公告)号：AU6447399A

公开(公告)日：2000-07-27

申请号：AU6447399

申请日：1999-12-13

Applicant: LUCENT TECHNOLOGIES INC

Inventor： JIN SUNGHO ,  ZHU WEI ,  KOCHANSKI GREGORY PETER

IPC: B81C1/00 ,  H01J1/304 ,  H01J9/02 ,  H01J23/04 ,  H01J23/06 ,  H01J25/38 ,  H01J29/04 ,  H01J31/12 ,  H01J19/24

Abstract: An improved process for fabricating nanotube field emitter structures is provided, in which the nanotubes protrude from a supporting base material to improve emission properties. The resulting emitter structure are useful in a variety of devices, including microwave vacuum tube devices and flat-panel, field-emission displays. To attain the protruding nanotube emitter structure, according to one embodiment of the invention, nanotubes and metal particles are mixed and consolidated into a compact, and the compact is then sectioned to expose a substantial number of nanotube ends. A layer of the metal is selectively etched from the sectioned surface, leaving the exposed nanotubes protruding from the surface. The extent of protrusion is at least twice the average diameter of the nanotubes, advantageously at least ten times the average diameter of the nanotubes.