- One obvious fact is that 'Saxet' spelled backwards is 'Texas'. Here are some other interesting anecdotes related to the name.
- - In Corpus Christi, Texas oil was found in the Saxet area in 1930
- - There once was a Saxet, Texas, but it is long abandonded.
Saxet Surface Science Recent Publications• Photoyield Recovery of Cs+NF3 Activated Negative Electron Affinity GaAs Photoemitters without Additional Alkali Deposition, G. A. Mulhollan and J. C. Bierman, J. Vac. Sci. Technol. B 28, 899 (2010)
• Cesium and Oxygen Activated Amorphous Silicon Germanium Photocathodes for Photoinjectors, G. A. Mulhollan and J. C. Bierman, J. Vac. Sci. Technol. B 28, 495 (2010).
• The Surface Activation Layer of GaAs Negative Electron Affinity Photocathode Activated by Cs, Li, and NF3, Y. Sun, R. E. Kirby, T. Maruyama, G. A. Mulhollan, J. C. Bierman and P. Pianetta, Appl. Phys. Lett. 95, 174109 .(2009).
• Recent Progress toward Robust Photocathodes, G. A. Mulhollan and J. C. Bierman, AIP Conf. Proc. 1149, 1027 (2009).
• Enhanced Chemical Immunity for Negative Electron Affinity GaAs Photoemitters, G. A. Mulhollan and J. C. Bierman, J. Vac. Sci. Technol. A 26, 1195 (2008).
• Transport Mechanisms in Polarized Semiconductor Photocathodes, K. Ioakeimidi et al., AIP Conf. Proc. 915, 1061 (2007).
• Improved Electron Yield and Spin-Polarizaton from III-V Photocathodes via Bias Enhanced Carrier Drift, G. A. Mulhollan, J. Bierman, A. Brachmann, J. E. Clendenin, E. Garwin, R. Kirby, D.-A. Luh, T. Maruyama, R. Prepost, PAC05 Particle Accelerator Conference, Knoxville, Tennessee, USA, May 16-20 (2005).
Intellectual Property• United States Patent Office Provisional Patent Application 61/516,867, Method for Employing Titania Nanotube Sensors as Vacuum Gauges. Submitted 01/2011.
• United States Patent Office Patent Application 12/931,839, Method for Resurrecting Negative Electron Affinity Photocathodes After Exposure to an Oxidizing Gas. Submitted 02/2011.
• United States Patent Office Patent Issued. Patent No 8,017,176 B2, Robust activation method for negative electron affinity photocathodes. Published 12/2009.
We like to think that Saxet Surface Science has one of the most vigorous research programs in the field of photocathodes since RCA's heyday. Below are detailed some of our current activites. We presently have several research grants in the photocathode field.
• GaAs photoemitter environmental immunization
We have developed an activation procedure by which the reactivity to CO2, a principal cause of yield decay for GaAs photocathodes, is greatly reduced. The use of a second chemical in the activation process is responsible for the increased immunity of the activated surface. The best immunity was obtained by using this combination without any loss in near bandgap yield. Optimally activated photocathodes have nearly equal quantities of both chemicals. The plot to the right shows the effect of CO2 exposure on activated bulk GaAs using the standard and modified techniques.
• Amorphous silicon photoemitters
Saxet Surface Science is dedicated to the development of this exciting photoemitter. While it does not have the yield of other VIS-sensitive photocathodes, it has a greater immunity to vacuum environment interactions, whether in the form of residual gas neutrals or ions. The following photo shows the growth of amorphous silicon in our RF PECVD system. Due to its robustness and ease of growth on most surfaces, it may prove to be an ideal choice for use in RF guns for high energy accelerators and free electron laser source injectors.
• Photon-driven vacuum tubes
We have recently shown that our amorphous silicon photoemitters can be used as the electron source in vacuum tubes, a major advance in this nascent field. Such devices should exhibit advantages in speed and high voltage compatibility when contrasted with their solid-state equivalents. They will consume much less energy and run cooler than the old style, energy-hungry vacuum tubes, which employ thermionic electron sources.
• Technology transfer
Saxet Surface Science is presently embarking on a collaboration with a major photoemitter manufacturer to transfer Saxet Surface Science's advanced photoemitter preparation techniques into the manufacturing arena.
LabVIEW Executables*The following LabVIEW executables are available for download. The LabVIEW runtime engine must be installed, along with the VISA resource engine. If you are interested in the LabVIEW Virtual Instrument (*.vi) file please contact us.
Minolta/LAND Cyclops 52 Infrared Thermometer
This compiled LabVIEW program allows RS-232 communication with the Cyclops Pyrometer. It can display the data in real-time and provides a data logging option. A serial patch cable is required, along with a TTL Level serial port/connector. Detailed connection information is outlined in our communication summary: Land Cyclops 52 Communication Summary.pdf
Cyclops 52 Program.zip (389kB)
Minolta/LAND Cyclops 152 Infrared Thermometer
This compiled LabVIEW program allows RS-232 communication with the Cyclops Pyrometer. It can display the data in real-time and provides a data logging option. A serial patch cable is required (different than Cyclops 52), along with a TTL Level serial port/connector. Detailed connection information is outlined in our communication summary: Land Cyclops 152 Communication Summary.pdf
Cyclops 152 Program.zip (382kB)
*Saxet Surface Science is not responsible for any damages from use or misuse of any posted software, information, or instructions. This software is provided free of charge, use at your own risk.
Useful ContactsCustom Embroidery
The wife of one of the Saxet team, Mary Kirby, has embarked on a new enterprise, custom embroidery. She uses a Brother Innovis Duetta 4500D embroidery/quilting/sewing machine and has made several shirts with the Saxet logo for our team as well as many other beautiful patterns for friends and family. An example of a logo on a business shirt is shown below as is the lovely Mary modeling a shirt she made for herself that illustrates the machine's capability. If you are interested in having some embroidery work done by her, contact us through the Saxet contact page and we will forward your request on to her.