Congratulations to Georgia Hurchalla for successfully defending her MS Thesis on Effect of Hierarchical Structure and Orientation on Water – Repellant Legs of Water-Walking Insects! Georgia will leave SURFI team in August heading to industry.
Congratulations to Jeff Brookins for successfully defending his MS Thesis on Development and Characterization of Biodegradable Zinc Vascular Ligation Clips! Jeff leaves us this week to start his PhD program at the University of Tennessee.
Papers on contact angle measurements and physics of superhydrophoobic and superhydrophilic surfaces remain as top two all time most-cited papers published in Surface Innovations. One of our newest publication, on contact angle terminology, published in 2017, climbed quickly to the 4th spot. See entire list.
The review papers entitled Hydrophilic and Superhydrophilic Surfaces and Materials, published in Soft Matter in 2011, was marked again this year as Highly Cited Paper by Thomson Reuters in its Web of Science. This highly cited paper received enough citations third year in a raw to place it in the top 1% of the academic field of Materials Science based on a highly cited threshold for the field and publication year.
Also one of our newest publication: Evaluation of Wrought Zn-Al alloys (1, 3, and 5 wt% Al) Through Mechanical and In Vivo Corrosion Testing for Stent Applications, Journal of Biomedical Materials Research: Part B – Applied Biomaterials 106B(1)(2018)245-258, was placed under this top 1% category in the field of Materials Science.
Surface Innovations Team welcomes a new member, Dr. Malgorzata Sikora-Jasinska. Dr. Sikora-Jasinska received her double PhD degree at Politecnico de Milano in Italy (Department of Mechanical Engineering) and University Laval, Canada (Department of Mining, Metallurgical, and Materials Engineering). Her doctoral research program was on development of Fe-based composites by powder metallurgy for cardiovascular implant applications. She also contributed to development and testing of Zn-based bioalloys during her PhD program. Dr. Sikora-Jasinska will help us to develop new Mg and Zn-based alloys and to improve the methods of corrosion evaluation of biodegradable metals by assessing biologically and microbiologically induced degradation properties.
Prof. Drelich has been recognized by the Michigan Tech with the Distinguished Professor title. This new title recognizes outstanding faculty members who have made substantial contributions to the University as well as their discipline but are not presently recognized through an endowed position or faculty fellowship. Only five faculty received this recognition. Full story.
Natural materials and the structures they form, developed and perfected through millions of years of evolution, have long inspired researchers for innovations in science and engineering. One example, fish scales, are notable for their strength, toughness, flexibility, and lightweight. These properties are the result of collagen fibrils and hydroxyapatite crystals that have been arranged into three-layer structures through mechanical locking and chemical bonds, via a process that is still poorly understood. In this new review entitled Fish Skin: A Natural Inspiration for Innovation published in Advanced Biosystems, we aim to compile the established knowledge on the composition, structure, and surface/interfacial features of fish scales. Using mainly Arapaima gigas as a focus, published information and supplementary data acquired through imaging, analytical techniques, and tensiometry are combined. This is done to take a closer look at the surfaces and interfaces of fish scales to identify their unique features, and begin to overcome some of the limited understanding of surface functionalities that are created by nature.
The paper entitled “Contact Angles and Wettability: Towards Common and Accurate Terminology” by A. Marmur, C.Della Volpe, S. Siboni, A. Amirfazli, and J.W. Drelich and published in Surface Innovations 5(1)(2017)3-8 has been awarded the Surface Innovations Prize (Journal Prize for best paper) by ICE Publishing.
Both oral and poster senior design presentations went well this year. Mercury Marine sponsored a project entitled Polymer Filament for Evaporative Pattern Prototyping that was advised by Prof. Drelich. Four MSE seniors including Alex Ball, Kristen Bull, Simon Eddy and Lewis Marshall worked on a selection of polymeric filament for 3D printing to rapidly prototype patterns for projects in the company lost foam aluminum casting; to replace expanded polystyrene foam.
Spontaneous spreading of a droplet on a solid surface is poorly understood from a macroscopic down to a molecular level. In our new publication entitled “Spontaneous Spreading of a Droplet: The Role of Solid Continuity and Advancing Contact Angle” and published in Langmuir, in collaboration with the Stevens Institute of Technology, we investigated the effect of surface topography and wettability on spontaneous spreading of a water droplet. Spreading force was measured for a suspended droplet that minimized interference of kinetic energy in the spontaneous spreading during its contact with solid surfaces of discontinuous (pillar) and continuous (pore) patterns with various shapes and dimensions. Results show that a droplet cannot spread spontaneously on pillared surfaces regardless of their shapes or dimensions due to the solid discontinuity. On the contrary, a droplet on pored surfaces can undergo spontaneous spreading whose force increases with a decrease in the advancing contact angle. Theoretical models based on both the system free energy and capillary force along the contact line validate the direct and universal dependency of the spontaneous spreading force on the advancing contact angle.