page 62 Abstract: A fiber pullout test for examining controlled interfaces in fiber reinforced polymers has been designed and demonstrated. This test has been utilized in determining interfacial fracture toughness for sapphire/epoxy single fiber composite specimens. Some of these specimens incorporated a self-assembled monolayer at the sapphire/ epoxy interface as a means of adhesion control—th...

We employ first-principles density functional calculations to explore atomic-level interactions and predict the ideal work of adhesion at the SiO2/nickel and ZrO2/SiO2 interfaces. We find that chemical bonding at the interface serves to strengthen significantly interfaces formed with SiO2, which exhibits significant covalent bonding character, relative to those formed using more ionic oxides, s...

Using atomic scale interfaces consisting of slabs of the same materials, we study the relationship between adhesion and static friction. The work of separation, which is a measure of adhesion, and the spatial variation of the interface potential energy along the sliding direction are computed for both commensurate and incommensurate Al2O3/Al2O3 interfaces, and incommensurate smooth and rough Al...

where ∆T and q are the temperature drop and heat flux across the interface. Predicting the thermal boundary resistance of semiconductor/semiconductor interfaces is important in devices where phonon interface scattering is a significant contributor to the overall thermal resistance (e.g., computer chips with high component density). Such predictions will also lead to improvements in the design o...

Nanostructured metals achieve extraordinary strength but suffer from low thermal stability, both a consequence of a high fraction of interfaces. Overcoming this tradeoff relies on making the interfaces themselves thermally stable. Here we show that the atomic structures of bi-metal interfaces in macroscale nanomaterials suitable for engineering structures can be significantly altered via changi...

Solid-liquid interfaces are extensively encountered in materials processing and applications. The structure and properties of these interfaces affect solidification, wetting behavior, and crystalline growth mechanisms, including epitaxial growth. The exact structural and chemical nature of these interfaces has been historically difficult to study at high resolution due to the fact that one phas...

Speech recognition, image processing, and language understanding technologies have successfully been applied to broadcast news corpora to automate the extraction of metadata and make use of it in building effective video news retrieval interfaces. This paper discusses how these multimedia technologies can be adapted to enrich perspectives in exploring cultural heritage documentaries. Through au...

This paper presents the theoretical and experimental possibilities of a modulated photothermal method, laser induced photoreflectance, for inspecting the quality of interfaces with rnicronic spatial resolutions. An analytical model is established for semi-infinite materials containing an internal interface perpendicular to the sample surface. The presented application is the detection of therma...

1 Department of Physics and “Nanostructured Interfaces and Surfaces” Interdepartmental Centre, Università di Torino, Torino, Italy, 2 Laboratory of Bio-Inspired and Graphene Nanomechanics, Department of Civil, Environmental and Mechanical Engineering, Università di Trento, Trento, Italy, 3 Center for Materials and Microsystems, Fondazione Bruno Kessler, Trento, Italy, 4 School of Engineering an...