Peter David Swann

57539243, May 19, 1998

Mar 12, 1997

8/815685

Peter R. Swann - Pleasanton CA

Gatan, Inc. - Pleasanyton CA

H01J 3720

25044311

An ultra-high tilt cryotransfer holder is provided which is capable of rotating a specimen through a full 360. degree. tilt angle (180. degree. from horizontal in both clockwise and counterclockwise directions) without spillage of cryogenic liquid, and while maintaining proper protection and cooling of the specimen. The cryotransfer holder includes a holder body having a specimen tip and a source of cooling for the specimen tip. The specimen tip includes a specimen grid of a thermally conductive material which has a plurality of grid openings between crossing grid bars. The grid may be extended from the holder into a forward viewing position or retracted into a protected position within a cryoshield.

49509012, Aug 21, 1990

Nov 6, 1989

7/432229

Joseph S. Jones - Pleasanton CA
Peter R. Swann - Diablo CA

Gatan, Incorporated - Pleasanton CA

H01V 3720

2504431

An improved specimen cooling holder for transmission electron microscopy is described. Low thermal conductivity pins near the specimen and an improved conductor/dewar connection reduce specimen vibration, providing improved image resolution. Multiple heaters facilitate accurate temperature control and bakeout procedures.

47393998, Apr 19, 1988

Aug 6, 1987

7/082273

Peter R. Swann - Diablo CA
Bernd Kraus - Munich, DE

Gatan Inc. - Pleasanton CA

H04N 718

358 93

A device comprising a television camera mounted inside the projection chamber of a transmission electron microscope with the imaging surface perpendicular to the optical axis of the microscope. The electron image is converted to a light image by high efficiency YAG transmission scintillator and transferred by a low loss fiber optic plate to a CCD imaging device. The camera is moved by a pneumatic piston between the operating position where it intercepts the electron beam and a position where the electron beam can pass unobstructed to the main microscope viewing screen.

48333301, May 23, 1989

Nov 3, 1987

7/116039

Peter R. Swann - Diablo CA
Joseph S. Jones - Livermore CA

Gatan Inc. - Pleasanton CA

H01J 3720

2504431

An improved electron microscope anticontaminator having a conduction rod enclosed within an independent vacuum system and micropositioning capability is described. The micropositioning facility allows the use of unusually small apertures in the cold anticontaminator block with a consequent improvement in efficiency of function. A self-contained contact sensor provides immediate audible warning of contact between a specimen holder and the cold anticontaminator block, permitting the removal of the usual mechanical end-stops for the specimen tilt mechanism and allowing the maximum specimen movement possible at any time. The independent vacuum system in combination with a heater positioned close to the anitcontaminator block allows the microscopist to vent the microscope column without removing the anticontaminator from the microscope. Special anticontaminator blocks incorporating multiple apertures or an X-ray collimator eliminate the need for separate microscope objective aperture or X-ray collimator mechanisms and also ease design constraints imposed by the very limited space around specimens in high resolution microscopes.

47972610, Jan 10, 1989

Nov 3, 1987

7/116167

Peter R. Swann - Diablo CA
Joseph S. Jones - Livermore CA

Gatan Inc. - Pleasanton CA

G01N 2101
B01L 1100

422102

An electron microscope cryotransfer holder capable of simultaneously transferring several specimens is described. A cryo-shield protects the specimens from warming or frosting during the transfer from the specimen-loading workstation into the microscope.

47031816, Oct 27, 1987

Apr 7, 1986

6/848970

Peter R. Swann - Diablo CA
Bernd Kraus - Munich, DE

Gatan Inc. - Pleasanton CA

H01J 3720

2504421

A device interposed between an electron microscope specimen holder and a microscope translation stage constructed of a special combination of materials arranged in such a manner that little or no specimen drift occurs when the temperature of the complete assembly is changed. In the first and more common arrangement, the device is placed in the nose of the standard microscope specimen holder and consists of a silica rod inside a metal tube, the material of the tube having a larger coefficient of thermal expansion than the material of the specimen rod. In the second, and less common arrangement the device is placed on the opposite side of the specimen away from the nose of the holder and consists of one tube, the material of which must have a larger coefficient of thermal expansion than the material of the specimen holder.

49964330, Feb 26, 1991

Nov 6, 1989

7/431402

Joseph S. Jones - Pleasanton CA
Peter R. Swann - Diablo CA

Gatan, Inc. - Pleasanton CA

H01J 3720

2504431

A specimen heating holder for side entry transmission electron microscopes is described. The holder permits specimen tilt about two orthogonal axes and has the capability of raising the specimen temperature to. about. 1000. degree. C. A novel hinged electrical connection, resistant to fatigue, supplies, supplies power to a heater within the specimen cradle. Special low thermal conductivity cradle bearings minimize the required heater current and promote ease of assembly yet are sufficiently strong to make specimen loading easy.

50097431, Apr 23, 1991

Nov 6, 1989

7/431401

Peter R. Swann - Diablo CA

Gatan Incorporated - Pleasanton CA

H01L 21306
B44C 122
C03C 1500
C03C 2506

156643

An ion beam milling system for the preparation of transmission electron microscope specimens suitable for atomic resolution imaging, particularly of III-V and II-VI compound semiconductors and their alloys, is described. The system includes ion beam sources and reactive molecular gas jets which may be operated in combination or separately, as appropriate. A new heated specimen holder, giving greatly increased reaction rates with the molecular gas jet, allows milling angles very close to zero.