News & Articles

Andrew Wong, left, a materials science and engineering doctoral student, developed the metastasis research device with his faculty adviser, Peter Searson. IMAGE: WILL KIRK / HOMEWOODPHOTO.JHU.EDU

Viewing Cancer on the Move

October 31, 2014

Johns Hopkins engineers have invented a lab device to give cancer researchers an unprecedented microscopic look at metastasis, the complex way that tumor cells spread through the body, causing more than 90 percent of cancer-related deaths

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Temperature and structure: Graph shows heat absorbed by a thin film of aluminum as its temperature increased. Inset boxes show electron diffraction patterns captured by DTEM as temperature changes. The patterns reveal the crystal structure and orientation of the aluminum. At low temperatures, pattern is characteristic of a face-centered-cubic crystal structure. When the sample is heated past the large melting peak, the spots disappear indicating that the aluminum has lost its crystal structure due to melting. Credit: NIST

Strengthening Thin-Film Bonds with Ultrafast Data Collection

October 21, 2014

When studying extremely fast reactions in ultrathin materials, two measurements are better than one. A new research tool invented by researchers at Lawrence Livermore National Laboratory (LLNL), Johns Hopkins University and the National Institute of Standards and Technology (NIST) captures information about both temperature and crystal structure during extremely fast reactions in thin-film materials.

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Configurations of five different (A) Cu-centered and (B) Zr-centered polyhedra, in which the center atoms are the top five atoms with the highest participation fractions for each constituent species. These are representatives of GUMs in this MG. Orange spheres are for Cu atoms and silver ones for Zr atoms.

Soft Spots and Their Structural Signature in a Metallic Glass

September 26, 2014

Jun Ding, a PhD student working with Prof. Evan Ma, has demonstrated a structure-property correlation in metallic amorphous solids. This was achieved in collaboration with Prof. Michael Falk’s group in our department. Their findings were recently published in the Proceedings for the National Academy of Sciences (PNAS).

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