Hosted by: Jun Wang

High brightness is a fundamental property of third generation synchrotron facilities. Those deliver coherent beams, which intrinsically provide access to the phase information from a sample. The Swiss Light Source operates TOMCAT, a beamline dedicated to TOmographic Microscopy and Coherent rAdiology experimenTs. Our group develops cutting-edge equipment for non-destructive tomographic investigations and provides the necessary instrumentation for phase contrast imaging at spatial resolution ranging over four orders of magnitude as well as the acquisition of 3D volumes within a fraction of a second. This presentation will illustrate how phase contrast imaging can be implemented with applications in human radiology down to nanotomographic imaging of single cells. A brief review of the most advanced phase contrast imaging techniques will be provided, with particular emphasis on full-field Zernike microscopy, free-space propagation and grating-interferometry. Each of these methods has shown to be particularly suited for selected investigations. Applications criteria as well as limitations for each technique will be presented, with the illustrative support of examples taken from daily experiments carried out at modern, third generation synchrotron facilities. Particular emphasis will be devoted to applications involving the investigation of life sciences relevant material like cells (organelles identification), soft tissue biopsies (tumor visualization, Alzheimer plaques detection), bones (canaliculi detection and statistical nano-morphometry), insects (biomechanics of tethered flight) and breast tissue (early cancer detection

Thin film electronic devices have become an alternative technology to deal with applications where conventional semiconductors materials (e. g. crystalline silicon) cannot fill in for. Such applications involve systems capable of being flexible and transparent, rugged and light weight, large area and costeffective. The development of novel materials and device structures allows the use of thin films in high efficiency solar cells, LEDs, super capacitors, thin film transistors, CMOS circuits, sensors and thin film memories. High quality and uniform thin film semiconductor materials can be achieved using inexpensive solutions-based techniques, however higher quality materials are normally obtained with vacuum-based deposition techniques. Moreover, modeling and simulation of thin film semiconductor devices has become an important resource for circuit and system designers to reach the desired applications. In this talk, we will review current materials and device processing techniques in novel structures for thin film technologies. We will describe how they have been applied in different areas where conventional technologies cannot, including energy harvesting, transparent/flexible circuitry and large area radiation sensing.

Hosted by: Alice Shanklin

Join the Office of Educational Programs and our summer interns for an evening of softball and a light dinner. To join our mentor team, sign up here: https://docs.google.com/spreadsheets/d/1LFCLGYMsI5b_no3la7uJw3qKOombI6HwjUtY9D_UquY/edit#gid=0

Visit the Center for Functional Nanomaterials (CFN), where Brookhaven scientists probe structures as tiny as a billionth of a meter. Play with hands-on activities in the "Nano-Discovery" zone. Be enthralled by the "Magic of Science."

Hosted by: Peter Wanderer

One thing just leads to another. Relatively early in my career I was fortunate enough to be appointed to the Scientific Advisory Committee of IBM, during a time when IBM had such a thing. As a "token chemist" on this committee, this experience opened my eyes to a much wider world than chemistry; it led to my service for six years (1992-1998) as a member of the National Science Board (NSB) of the National Science Foundation (NSF), the last two years as its chair. During the time I was chair of NSB, I made an official visit to China and met with the Director of the National Natural Science Foundation of China (NSFC) and gained their trust. This led to my service in 2011-2012 as chair of an international committee to assess the performance of NSFC. To my surprise and delight many of my committee's recommendations have been adopted. Presently, I am chairing COSEPUP, the Committee on Science, Engineering and Public Policy of the three academies, the National Academy of Sciences, the National Academy of Engineering, and the Institute of Medicine. I want to share with you some of the high and low points of these ventures into trying to shape public science policy in China and in the US.

Hosted by: Peter Wanderer

A breakthrough in mass spectrometry is the generation of ions under ambient conditions, that is, at atmospheric pressure and at room temperature, outside the mass spectrometer. One popular introduction method is to transport the ions inside microdroplets to the inlet of the mass spectrometer. This talk will describe recent efforts in my laboratory to use droplet-delivered ions as a means of capturing and identifying reaction intermediates and as a means of mass spectrometric imaging of surfaces for their chemical content.

Hosted by: Allen Orville

Hosted by: Photon Sciences Users' Executive Committee

The Photon Sciences staff and user community are invited to a Town Meeting on Tuesday, July 29, from 1-3 p.m. in the NSLS Seminar Room, Bldg. 725. Watch webcast at 1 p.m. http://www.bnl.gov/video/