Our new paper entitled “Preclinical In-Vivo Evaluation and Screening of Zinc Based Degradable Metals for Endovascular Stents” has been published in the JOM journal. Roger Guillory, PhD candidate, and Prof. Jeremy Goldman from Biomedical Engineering led this project, in which a metal wire implantation model in rats that our collaborative team introduced in 2012, is refined and described in details. This is a cost effective and realistic model for the biocompatibility evaluation of degradable materials in the vascular environment. In this new publication, metrics routinely used for evaluating stents to quantitatively characterize the long-term progression of the neointima that forms around zinc based wire implants were adapted. Histological cross-sections were used to measure the length of neointimal protrusion from the wire into the lumen (denoted wire to lumen thickness), the base neointimal length (describing the breadth of neointimal activation), and the neointimal area. These metrics were used to provide in depth characterization details for neointimal responses to Zn-Mg and Zn-Li alloys and may be used to compare different materials
Georgia published her paper entitled Water-Repellency of Hierarchical-Structured Legs of Water-Walking Striders and Fire Ants in Surface Innovations that summarizes her M.S. program. The following is the abstract of her publication:
“Some insects have the ability to walk on water surface due to hierarchical leg structure and wax coating. In this study, resistance forces of water strider and fire ant legs to submersion in water, under their various orientations, were quantified using a high-sensitivity microbalance. Legs oriented parallel to water surface could support up to ten times as much force before immersion, compared to legs in a perpendicular orientation. Water pressure affected the setae structure differently at parallel and perpendicular approaches, and complete wetting was more difficult in the structure observed during parallel immersion. The wax coating on water strider legs was found to decrease adhesion force with little effect on immersion force. Overall, wax-coated strider legs, having conical setae with nanogrooves to facilitate removal of water, that are oriented parallel to the water surface, coated with wax, and have coned setae with nanogrooves to facilitate removal of water, are natural models for legs of a biomimetic aquatic robot when oriented parallel to the water surface.”
We are glad to share with you the content of the first issue of 2019 of Surface Innovations with eight papers on variety of topics related to surfaces, interfaces, coatings and nanotechnology. Beside regular summary of the issue content, our Editorial also reports ceremony of Doctor Honoris Cause by Poznan University of Technology and International Symposium on Advanced Materials and Sustainable Technologies that was sponsored by ICE Publishing, with poster awards provided by Surface Innovations. Hope you will enjoy reading it.
Big congratulations to Allison for winning one of the Making a Difference Awards. She competed with 14 other nominees in the Above and Beyond category and won this award. A short quotation from the nomination letter: “Allison’s competence and effectiveness is revealed by the inarguable impact that it has had on the productivity of the MSE Department and its faculty. ….her unique skill set has facilitated this era of high efficiency, effectiveness, and success among our faculty.”
We are proud to have you Allison as the member of SURFI team!
The SURFI team was among six teams awarded with seed grants by the MTU College of Engineering. This award will allow the SURFI team to explore a new design of biodegradable Zn-based stents for vascular scaffolding.
The Graduate School with the help from us submitted a GradImpact story on one of our Michigan Tech alums and veterans, Jeffrey Brookins, entitled: Finding a Path from Afghanistan to Materials Science. The submission was chosen and published on November 16, 2018. Hope you will enjoy reading it.
Prof. Jarek Drelich was invited to Zhengzhou in China to attend the Talent Recruitment & Project Matchmaking Event for Innovation and Development conference (October 27-28, 2018). The meeting was a high-level, large-scale talents recruitment event hosted by the Henan Provincial Committee, the People’s Government of Henan Province, and Western Returned Scholars Association. The conference was committed to putting the strategy of reinvigorating Henan through human resource development into action. Themed with “Embrace Talents Worldwide to Power the Future of Central Plains,” it aimed to build a platform for Henan Province to promote talent policies, showcase talent achievements, recruit more talents and advance projects cooperation. During this meeting, Prof. Drelich signed an intent of collaboration with Zhengzhou Huaxiang Refractories Co. Ltd on a project related to development and testing of novel porous materials for environmental cleaning, one of a few projects selected and approved by government of the Henan province. He also visited the company to discuss possible future directions of collaboration.
The SURFI Team welcomes a new addition to our team, Donghui Wang. Donghui has arrived from the School of Resources and Civil Engineering at Northeastern University in P.R. China in a middle of October. He will explore fundamentals of hematite flotation in the presence of quartz and magnetite by exploring water-mineral interactions in the presence and absence of flotation reagents.
Prof. Jarek Drelich attended the XVIth International Conference on Surface Forces that took place this year in Kazan, Russia. He delivered a keynote address entitled Direct Measurements of Liquid Adhesion with Solids: Gateway to a Multi-Faceted Understanding of Contact Angles. He also presented a poster prepared by Georgia Hurchalla and entitled Water-Repellent Legs of Water Insects.
The meeting covered new scientific developments in the area of colloid and surface science from chemistry to physics and engineering with the emphasis on the fundamentals of surface interactions including wetting. This series of meetings was initiated in 1960 by famous Russian scientist academician B.V. Derjaguin.
The Conference program included seven keynote lectures, four days of oral presentations, and two poster sessions. The meeting took place in a center of tourist downtown of Kazan, and program included a tour to Sviyazhsk island.
Beside strong scientific program, attractive location, this meeting solidified a collaboration between SURFI and Russian Academy of Sciences.