X-ray microscopy

Empowering Multicomponent Cathode Materials for Sodium Ion Batteries by Exploring Three-dimensional Compositional Heterogeneities

August 31, 2018

Lithium ion batteries are widely used in electronic devices and vehicles because of their high energy density. Unfortunately, lithium is not an abundant element on Earth, so demand is mounting for an alternative battery that has high energy density but made with more sustainable materials.

Unsupervised Data Mining in Nanoscale X-ray Spectro-Microscopic Study of a NdFeB Magnet

October 31, 2016

Rare earth magnetic materials have many applications, such as MRI scanners, Maglev trains, and electric vehicles. Scientists are researching improvements to these magnets through optimizing the component materials. Taking a different approach, a team of scientists have studied the effects of nano-scale heterogeneity in the chemistry and structure of Nd2Fe14B, a very strong and widely-used rare earth magnet. 

Experimental Station 6-2c

Beam line 6-2c is a wiggler end-station dedicated to hard x-ray transmission x-ray microscopy. The BL6-2c back hutch houses a Transmission X-ray Microscope with 2D and 3D full field imaging and spectroscopic capabilities, with an instrument resolution down to 30 nm.  It has specific capabilities for in-situ tomographic studies of catalytic processes including x-ray absorption spectroscopy.

How were Lekythoi used in Ancient Greek Funeral Practices?

July 26, 2010

Anthropologists learn about ancient cultures through the objects left behind. Ritualistic artifacts give glimpses into the religious and belief systems of nonextant societies. Application of new techniques of chemical and structural analysis to the study of ancient objects can give more insight into how they were made and used.

Differential Encoding Brings Higher Resolution to X-ray Lensless Holography

September 27, 2010

X-ray microscopy is a useful tool for visualizing functional materials on the nanoscale.  X-ray holography replaces the lens with a computer and obtains an image by Fourier inversion of the interference pattern. While in principle the resolution limit is given by the x-ray wavelength, in practice, the resolution is limited by the size of the reference being used.

Synchrotron X-ray Analysis Demonstrate Phosphate-Bound Gadolinium in Skin in Nephrogenic Systemic Fibrosis

December 13, 2010

Nephrogenic systemic fibrosis, or NSF, is a relatively new disease in which the skin becomes hardened, joint movement becomes difficult and, in extreme cases, an excessive and sometimes fatal fibrosis tissue forms around organs. So far, NSF has only been observed in patients with kidney dysfunction who have undergone an MRI that required the injection of gadolinium-based contrast agents (GBCAs). Researchers speculate that the patient's kidneys cannot break down the gadolinium, causing NSF, but until now there has been no direct evidence for such a link.

X-ray Nanotomography Imaging for Circuit Integrity

September 26, 2011

As cell phones, computers, and other electronic equipment have become part of our daily lives, so too have integrated circuits.  Also known as microchips, these semiconductors patterned with trace elements serve as the brains of electronic devices, controlling processes, storing data, and converting information from digital to analog, to name only a few applications.  With their increasing prevalence, however, comes the increasing prevalence of malicious attacks.  Integrated circuits are susceptible to "hardware Trojans" that can be inserted during production, testing, or distribution to cause failure or compromise the circuit.

Discontinuities in the Human Bone-PDL-Cementum Complex

January 30, 2012

A common problem in orthodontics is the narrowing of the space taken up by tissue connecting the root of a tooth to its bony socket ("periodontal ligament space") around teeth that are forced to change position with braces or other orthopedic fixation devices.  Healthy periodontal ligament space is generally considered to be between 150 and 380 µm; yet as teeth are forced to move (and as patients age), this space can be narrowed too far, potentially causing a failure of the fibrous joint between the bone and tooth.

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