News
K-12 Summer Teacher Workshop
The Renewable Energy MRSEC at the Colorado School of Mines in collaboration with the outreach division at the National Renewable Energy Laboratory held a two week workshop for math and science teachers from public school catering to under-represented minorities. The teachers were given hands-on experiences for projects in renewable energy to incorporate into their lesson plans.
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Understanding the Mechanisms Controlling Sn Whisker Formation
Sn whiskers are a serious reliability problem in Pb-free electronics manufacturing. Whiskers (as in fig. 1) grow out of pure Sn coatings and have been responsible for numerous system failures, such as the Galaxy IV satellite. To increase our understanding of whisker growth, we have performed systematic measurements to quantify the whisker growth kinetics and the correlation between the formation of a Sn-Cu intermetallic compound (IMC), stress in the Sn and whisker nucleation.
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Tinkering Lab at Chicago Children's Museum
Northwestern University with the Chicago Children’s Museum in prototyping and formative evaluation of the new permanent exhibit, Tinkering Lab, which focuses on the self-guided exploration of materials for K-8 students.
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Sustainability efforts gain institutional support and international recognition
The MRSEC’s sustainability initiative for research labs expanded in its second year to 29 labs across Penn State University Park and six branch campuses. Over 400 researchers have been involved thus far. Labs completing My Green Lab certification can be paired with one of 17 undergraduate Sustainable Lab Ambassadors who apply their sustainability training to the lab setting through engaged scholarship.
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Discovery of Ni Activated Sintering of MoNbTaW Guided by a Computed Grain Boundary “Phase” Diagram
This study, carried out by researchers at UCI MRSEC, demonstrated the first example of activated sintering of a high-entropy alloy. It also revealed a segregation-induced grain boundary prewetting (disordering) transition.
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Ferroelectric Oxide Directly on Silicon
Silicon/silicon
dioxide is arguably the most important technological interface. With the end of
Moore’s law scaling for silicon fast approaching, alternatives to silicon
dioxide could enable new electronic device architectures. MRSEC researchers
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Structure–Property Relationships in Hierarchically Ordered Self-Assembled Systems
When a negatively
charged, high molecular weight polymer (hyaluronic acid) is mixed with a positively charged peptide-based,
self-assembling molecule, a membrane is instantaneously formed at the interface
of the two solutions. These closed membranes (sacs) have a complex hierarchical
structure which presents a unique challenge in quantifying its mechanical
properties. Membrane inflation and osmotic swelling techniques have been used
to quantitatively characterize the membrane properties. These findings will be
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