Materials Literature
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Ultra High Performance Concrete (UHPC) is usually considered to be over 150 MPa in compressive strength and over 20 MPa for flexural strength. Therefore, UHPC offers considerable potential in forward-thinking designs for thinner/larger post-tensioned slabs and smaller/longer columns in the construction of high-rise bu…
Water management in a polymer electrolyte fuel cell is a critical issue in ensuring high cell performance. The water production, due to both electro-osmotic drag and the chemical reaction, in the cathode side of the fuel cell leads to liquid water formation in the gas diffusion layer and the reactant flow channel. If…
In order to keep the overall length of the compact linear collider (CLIC), currently being studied at the European Organization for Nuclear Research (CERN), within reasonable limits, i.e. less than 50 km, an accelerating gradient above 100 MV/m is required. This imposes considerable demands on the materials of the acc…
The high temperature, high pressure electrochemical behavior of A516 Gr. 70 carbon steel in aqueous alkaline sulfide solutions was studied by means of polarization tests and cyclic volt-ammetry. The effects of variation of temperature (90-150°C), sulfide concentration (0-3 m), scan rate (1-50 mV/s) and scan range, and…
There is a general interest and need for surface modifications for tailoring the properties of materials devices and providing additional functionalities.This covers applications such as lubrication, corrosion protection as well as biomedical applications.For the later one of the important areas covers approaches to g…
Type I collagen is the main connective tissue protein in vertebrates. The cross-linking and correct organisation of the molecules is crucial for the proper function of the tissue. Traditionally collagen cross-linking has been studied using chemical cross-link analyses. However, this does not distinguish between the co…
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Membrane fusion is involved in a multitude of biological processes like endo- and exocytosis, viral infection or synaptic release. The detailed mechanism, however, is not well understood because the time and length scales microseconds and tens of nanometers, respectively make a direct experimental observation difficul…
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With the ultraviolet-visible spectrometer and photospectrometer, we have investigated the optical absorption and light emission from the dilute tetrahydrofuran solutions of a classical banana-shaped liquid crystal 1,3-phenylene-bis[4-(4'-nonyloxy)phenyliminomethyl]benzoate. In the dilute tetrahydrofuran solutions, thr…
Discusses the main topics of discussion in the special section on therpeutic ultrasound as well as the current status and key trends in the industry.
The manufacturing processes involved in producing insulated metal substrate (IMS) products are shown to lead to inconsistent thickness of the insulator layer. The electrical and thermal effect of this uneven structure is investigated when compared to a classic parallel plate approximation. Methods of modelling the int…
During the recent years, several promising finite element solutions have been presented for finding the response of structures subjected to blast loading. This thesis gives as a comparative study on 3 major solution strategies, and their implication on the response on constrained plates of varying standoff distances.…
An inevitable consequence of the increasingly larger buildings that we see around us is the demand for lighter construction components. Since floor slabs constitute the main part of the overall weight of multistory buildings, reducing their weight is a key step in reducing the overall weight of the construction. Usual…
The purpose of the work presented in this thesis has been to investigate thermal transport in pure polystyrene as well as in a mixture of polystyrene and carbon dioxide. Another part of the work has been to calculate the anisotropy of the thermal conductivity in stretched polystyrene. To finally tie everything togethe…
Diamond is a semiconductor with many superior material properties such as high breakdown field, high saturation velocity, high carrier mobilities and the highest thermal conductivity of all materials. These extreme properties, as compared to other (wide bandgap) semiconductors, make it desirable to develop single-crys…
Large amounts of hydrogen are produced worldwide, which are nearly all from fossil origin. Use of biomass instead of fossil fuels to produce hydrogen can contribute to a reduction of greenhouse gas emissions. Therefore, the hydrogen has to be produced at high yield and efficiency. A Microbial Electrolysis Cell is a ne…
In order to better understand work hardening behavior of pure magnesium, latent hardening experiments with magnesium single crystals were carried out. Large magnesium single crystal samples were first deformed in tension, and subsequently sectioned for secondary tension tests. Three different initial crystallographic…
Soft material characterization in the dynamic regime is needed for constitutive models to support numerical simulations for shock mitigation and characterization, blasts effects due to explosions, and vibration isolation. However, both the experimental techniques and dynamic properties of soft materials are scarce. A…
Au based catalysts have been extensively studied since Masatake Haruta in Japan discovered that small Au nanoparticles supported on transition metal oxides are exceptionally active catalysts for oxidation reactions at low temperature. However, what makes gold, being inert in the bulk form, active is still a big questi…