Lab in the Spotlight
Jerome B. Cohen X-Ray Diffraction Facility at Northwestern University Facility Director: Prof. Michael Bedzyk, Materials Science & Engineering Department Rigaku’s latest instruments for powder XRD, thin-film XRD and small angle X-ray scattering have been installed in the Jerome B. Cohen X-Ray Diffraction Facility at Northwestern University, Evanston, Illinois, USA. A 1970s vintage Rigaku powder diffractometer and Rigaku’s powerful high-intensity rotating anode generators are also installed in this same room. The equipment is well maintained by Jerry Carsello, facility manager, and all of the equipment is functioning well. The following recent research article, by Dr. Sumit Kewalramani in the Betzyk group, describes one example of how the group is using the X-ray diffraction facility. He measured GIXRD and XRR with a Rigaku ATX-G Thin-film XRD to generate the results presented in this paper. “In-Situ Probe of Gate Dielectric-Semiconductor Interfacial Order in Organic Transistors: Origin and Control of Large Performance Sensitivities”, Stephanie R. Walter, Jangdae Youn, Jonathan D. Emery, Sumit Kewalramani, Jonathan W. Hennek, Michael J. Bedzyk, Antonio Facchetti, Tobin J. Marks, Franz M. Geiger, J. Am. Chem. Soc. 134, 11726-11733 (2012) In this article, the classic “buried interface” problem of organic thin-film transistor performance was explored. The results of this experiment are impressive There is also “iLab”, which is one of the most interesting elements of the educational program at Northwestern University. This remote online lab program for high school science is exceptionally popular among high school students and teachers. High school students can access the internet-based program anytime they want to study. They can also gain experience in analytical instrument operation. There is a fully functional educational program related to ICP, and more is planned.
The new HyPix-3000 hybrid pixel array detector brings a whole new level of efficiency to your diffraction research
0D, 1D, and 2D capabilities in a single detector One of the best features of the HyPix-3000 is the ability to use it for 0D, 1D and 2D applications. By building in such capabilities into a single detector, downtime between switching configurations is minimized. Click here for more information on Rigaku’s HyPix-3000
Prof. Bedzyk (left) and Jerry Carsello, Facility Manager
Students and researchers can use these instruments for their fundamental experiments in physics, as well as for complicated research. Use of the instruments is not limited to the university’s students, faculty and researchers. Applicants from outside of the university are also able to use them. “More than 300 users are accessing this facility for the research of material science and physics,” said Prof. Bedzyk, facility director. Several standalone rotating anode X-ray generators are combined with special optics and goniometers to simulate the experiments at the synchrotron. Northwestern is located near the Advanced Photon Source ( APS), a third-generation synchrotron, so the Northwestern facility is used for hardware development and pre-measurement before going to the APS. The research group run by Prof. Bedzyk is focusing on atomic scale views of interfacial and nanoscale processes with X-rays, using a combination of the instruments in this shared facility and APS.
Prof. Kemi Jona (right) and Ashley Walter, Cordinator of XRD iLab
According to Prof. Kemi Jona, the director of the high-school science program, more than 8,000 students and teachers around the world have used “iLab”. Users come from a broad range of geographies and backgrounds, including students from the US, Australia, Europe, South Africa and Asia. MIT and Sydney University have