Engineering phd thesis adhesion rough surfaces
For the degree of master of science in mechanical engineering in the graduate college of the university of illinois at urbana-champaign, 2014 urbana, illinois for controlling the magnitude of surface adhesion, rate-dependent property of viscoelastic polymer release even on small contact area or rough surfaces where contact area is small. A thesis by clint matthew miller submitted to the office of graduate studies of texas a&m university geologic and engineering processes impacted by organic-rock interaction plant leaves often display low surface adhesion so that. In his phd thesis r pohrt focussed on linking scales in the elastic contact of fractal rough surfaces, for which he was awarded by the german tribological society in 2013 r pohrt has authored a series of influential papers on different tribological problems, applying and extending state-of-the-art numerical methods.
Materials science and engineering master's and doctoral programs the department of materials science and engineering at the university of north texas offers coursework leading to a master of science degree or a doctor of philosophy degree in materials science and engineering. This dissertation focuses on 1) modeling the effect of surface roughness parameters on solid-solid contact and solid-liquid interaction as well as 2) developing a surface engineering method that can generate random surfaces with desired amplitude and. Surface treatments for adhesion reduction in polysilicon micromechanical devices (phd thesis abstract) this work investigates the interactions between polysilicon surfaces for the purpose of alleviating the strong interfacial adhesion present between contacting microstructure surfaces, a problem referred to as stiction.
Bachelor thesis in mechanical engineering finite element simulation of elastic contact between rubber rough surface and steel surface pere massanés padró supervisor at epsem: resistivity, heat transfer, adhesion, friction and the wear between solids in stationary or sliding contact. This thesis is brought to you for free and open access by mechanical engineering at cu scholar it has been accepted for inclusion in mechanical engineering graduate theses & dissertations by an authorized administrator of cu scholar. Chemical and morphological microfabricated model surfaces for cell adhesion studies martin winkelmann phd thesis, no 14106, eth zürich, 2001 structural influences on self-cleaning surfaces doris spori phd thesis, no 18942, eth zürich, nano-scale rough surfaces: a gradient approach shivaprakash narve ramakrishna phd thesis,. At the macroscale, effective surface hydrophilicity is often gauged by static contact angle measurements (ie, wettability), but dynamic and time-dependent wetting phenomena on rough surfaces is often overlooked. A dissertation submitted to the graduate faculty of auburn university in partial fulfillment of the coat rough aunp films with very thin films of silica (sio 2) to create a robust, rough surface surface adhesion energy of 0965 mj/m2 and the crack length and adhesion.
Phd dissertation department industrial and systems engineering metadata and smr significantly predict the surface adhesion of benthic algal species the second study aims to demonstrate the effects of geometric parameters such as shape, length, height, and pitch size of custom-3-d printed microtextured surfaces on receding and advancing. Wheel–rail contact under contaminated conditions yi zhu licentiate thesis department of machine design of the low-adhesion mechanism and of how various contaminants influence adhesion the thesis consists of a summary overview of the topic and three appended papers contaminants rough surfaces preface the work in this thesis was. Principle investigator nathan d gallant assitant professor, department of mechanical engineering, university of south florida program faculty member, biomedical engineering graduate program interdisciplinary faculty member, department of chemical and biomedical engineering lab members sarah mcmaster. For example, suction and fibrillar adhesives work well on smooth surfaces, microspines work well on rough surfaces and magnets work well on ferromagnetic surfaces however, these adhesives generally fail when applied to a different surface type. Biological modification of titanium surfaces using bifunctional peptides by hitomi akimoto, dds biological modification of titanium surfaces using bifunctional peptides (under the direction of lyndon f cooper, dds, phd) one possible explanation is greater cell adhesion on rough implant surfaces, however, cell culture studies do not.
By dao suwansang janjaroen dissertation for the degree of doctor of philosophy in environmental engineering in civil engineering in the graduate college of the university of illinois at urbana-champaign, 2013 urbana, illinois higher on rough rock surfaces (darbha et al, 2012)the effect of solution chemistry on. Modification of adhesion and friction by surface structuring by ying bai a dissertation presented to the graduate and research committee of lehigh university. Adhesion to rough surfaces is significantly improved by the combination of two materials the large-scale model shows the basic principle and the structure of the new adhesives, where soft.
Engineering phd thesis adhesion rough surfaces
Anti-ice and condensation properties of microtextured superhydrophobic surfaces abstract: research into the manipulation of surface wetting behavior, condensation characteristics, and ice adhesion strength has led to surface coatings with increased water repellency, self-cleaning characteristics, reduced surface corrosion, and reduced ice accumulation. The department of coatings and polymeric materials offers graduate studies leading to an ms degree or phd degree in coatings and polymeric materials, the ms degree or phd polymer synthesis, adhesion, surface and interfacial spectroscopy of coatings and polymeric materials, rheology, nanomaterials design and synthesis, and surface. Coursework the phd and ms degrees include a core of 14 credits in transport phenomena, thermodynamics, kinetics and mathematics these courses are supplemented with electives chosen in support of the thesis research or the student's special interests.
- Adhesion, friction and nanomorphology main content when two polished surfaces come into contact, due to the existence of the micro/nano scale roughness on the surface, the actual contact occurs at discrete points or “asperities”, which effectively lowers the area of contact to a small fraction of its apparent value.
- To better understand adhesion on macroscopic rough surfaces, we studied the ability of live tokay geckos to adhere to an engineered substrate constructed with sinusoidal patterns of varying amplitudes and wavelengths in sizes similar to the dimensions of the toes and.
The objective of this thesis is to develop a finite element model that simulates the microscopic asperity interaction between shoe and floor surfaces and apply it to quantify the effect of shoe material, topography, loading and sliding speed on shoe-floor adhesion and hysteresis friction. Engineering phd thesis adhesion rough surfaces adhesion , friction and nanomorphology – surfaces n ramakrishna, phd thesis , adhesion and tribology on well-defined, nano-scale rough surfaces : a gradient approach. Important in tissue engineering and regenerative medicine studied in the following section figure by mit opencourseware after ricci harley, phd thesis, p 203, 2006 the migration speed of fibroblasts decreases with regulators of cell migration and adhesion on collagen-like surfaces these findings with cancer cells have been. Mechanical engineering graduate program ii 21 cartoon showing the interaction between a flat surface and a rough surface with water present the effect of individual versus multiple asperities is shown, along surface characterization, adhesion and friction properties of hydrophobic leaf surfaces and nanopatterned polymers = .