Thermocompression bonding of gold is a promising technique for achieving low temperature, wafer-level bonding without the application of an electric field or complicated pre-bond cleaning procedure. The presence of a ductile layer influences the fracture behavior of the bonds. The fabrication process was described. In addition, the effect of plasticity was explored by varying the gold bonding thickness between 0.23 to 1.4 µm. Wafers were bonded at 300°C and two different pressures: 1.25 and 7 MPa. The bond toughness of the specimens were characterized using a four-point bend delamination technique. Cohesive failure was found to be the dominant fracture mode in the thicker films. Bonds made with thin gold films failed adhesively and at lower strain energy release rates. / Singapore-MIT Alliance (SMA)

Thesis advisor: Catherine Read / The purpose of this paper is to identify and examine the sources of paternal stress related to the NICU experience and the supports currently available. Once identified, the possible sources of stress will be incorporated into a checklist that will allow NICU staff to assess barriers to bonding and further personalize the interventions to facilitate the relationship between the parent and infant. / Thesis (BS) — Boston College, 2013. / Submitted to: Boston College. Connell School of Nursing. / Discipline: College Honors Program. / Discipline: Connell School of Nursing.

No description available.

Thesis (M.S.)--University of Michigan, 1980.

Thesis (M.S.)--University of Michigan, 1984.

Thesis (M. Cl. D.)--University of Western Ontario, 1998. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (M. Cl. D.)--University of Western Ontario, 1998. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (M.S.)--University of Michigan, 1984.

Thesis (M.S.)--University of Michigan, 1980.

Doctor of Philosophy / Department of Chemistry / Christer B. Aakeroy / The impact of the molecular electrostatic potential values (MEPs) in halogen and hydrogen bond interactions were explored using two acceptors with multiple acceptor sites with twelve hydrogen-bond donors, five halogen bond donors and four mixed halogen and hydrogen bond donors. The results suggested if the difference between the two acceptor sites is above 38 kJ/mol both hydrogen and halogen bond donors prefer the acceptor site with the highest MEP value and this selectivity was lost if the difference is below 26 kJ/mol. To examine the potential of halogen-bond donors in organocatalysis, a halogen-bond donor molecule was synthesized and the catalytic activity was measured using a benchmark Ritter type solvolysis reaction. Results suggested the catalytic activity of the halogen-bond donor molecule with > 90 % conversion of the product with the use of a stoichiometric amount of the catalyst for 96 hrs. Successful use of the control molecules confirm that the catalytic activity is an outcome of having halogen-bond donors in the molecule. The benefit of using a structural mimic in landscaping the structural outcomes of poorly soluble molecules was explored using an anticancer drug erlotinib. A structural mimic was synthesized by maintaining all binding sites that are important to design a structural landscape and the structural outcomes were analyzed using five FDA approved dicarboxylic acids. The results suggested that the structural outcomes of the mimic can be related to the actual drug erlotinib. Solubility and thermal behavior analysis of the co-crystals also suggested that with the systematic changes of the co-crystallization agent, it is possible to make predictable changes to the physical properties. To observe the effect of co-crystallization technology in reducing the chemical reactivity and sensitivity of an energetic compound dinitrobenzotriazole, a series of co-crystallization experiments was carried out using fourteen nitrogen and oxygen based acceptors. Four co-crystals were obtained and the acceptors were identified as supramolecular protecting groups which led to successful diminish of chemical instability and decreased impact sensitivity. Hygroscopicity and chemical reactivity of tetranitrobisimidazole, a potential RDX replacement, was successfully decreased by protecting the acidic N-H protons in the molecule by introducing suitable co-formers. Introduction of the N-oxide based acceptors into the system enhanced the stability while retaining most of the desirable energetic properties.