Self-healing Polymers: Characteristics and Applications The replacement of construction materials such as pipelines, coatings, and seals and biomedical materials such as wound dressings and dental fillings is costly and time consuming. Oftentimes, such inconvenience could be avoided if the lifespan of the materials can be prolonged. Type of Event: Materials Chemistry and Nanoscience Seminar Read more about Self-healing Polymers: Characteristics and Applications
Suture Materials: Current and Emerging Trends Sutures are special threads used in surgical procedures to enable closing and healing of surgical or trauma-induced wounds by upholding tissues together to facilitate healing process. Versatile suture materials are available for medical purpose. However, no single suture material is considered ideal for all situations, requiring clinicians to balance various properties when choosing a material for a particular application. Type of Event: Materials Chemistry and Nanoscience Seminar Read more about Suture Materials: Current and Emerging Trends
Ultra-Low Fouling Coatings for Antimicrobial Biomaterials Antimicrobial coatings are a promising route to prevent healthcare-acquired microbial infections caused by bacterial pathogens in medical contexts.1 To solve the problem of microbial biofouling, surfaces that can passively resist bacterial adhesion have been investigated. Type of Event: Materials Chemistry and Nanoscience Seminar Read more about Ultra-Low Fouling Coatings for Antimicrobial Biomaterials
Heterogeneous Nucleation of Poly(hydroxybutyrate-co-hydroxyhexanoate) Nucleation comprises the initial step of polymer crystallization, wherein the polymer melt stabilizes into ordered local structures, allowing for points from which polymer crystals can begin to grow. Nucleation quality can significantly impact the materials properties and processability of a polymer and is therefore of high importance to the materials science community. However, the collective understanding of polymer nucleation remains largely empirical. Type of Event: Materials Chemistry and Nanoscience Seminar Read more about Heterogeneous Nucleation of Poly(hydroxybutyrate-co-hydroxyhexanoate)
Methanobactin: An Intriguing Copper-Chelating Peptide with a Unique Biosynthesis Methanotrophs produce methanobactin (Mbn), a copper-chelating peptide, when copper levels in the environment are low.1,2 These methanotrophs utilize the copper-dependent enzyme methane monooxygenase to oxidize methane, which is the methanotrophs only carbon source. Type of Event: Inorganic Seminar Read more about Methanobactin: An Intriguing Copper-Chelating Peptide with a Unique Biosynthesis
The 37th Annual Charles A. Coulson Lecture: Reactions and Interactions in Complex Chemical Systems Systems of chemical reactions are central to a wide range of technological and environmental questions, such as autoignition in combustion engines, heterogeneous catalysis, or formation of atmospheric aerosols. Understanding the details of these systems requires knowledge of not only the individual reaction steps but also the way these steps interact in the web of chemical transformations. Type of Event: Coulson Lecture Physical Seminar Read more about The 37th Annual Charles A. Coulson Lecture: Reactions and Interactions in Complex Chemical Systems
Disagreement on the Degradation Mechanism and Applicability of Kinetic Models for Non-Platinum Group Metal Catalysts in Polymer Electrolyte Membrane Fuel Cells One large roadblock to the development of commercially viable hydrogen fuel cells is the cost of the platinum group metal (PGM) oxygen reduction reaction (ORR) catalysts used in proton-exchange membrane fuel cells (PEMFCs). Unfortunately, similarly active catalysts, like Fe-N-C catalysts, have suffered from stability issues limiting their use. To better understand these stability issues and design better catalysts a number of degradation mechanisms have been proposed and experimentally tested including demetalation, autocatalysis, and more. Type of Event: Physical Seminar Read more about Disagreement on the Degradation Mechanism and Applicability of Kinetic Models for Non-Platinum Group Metal Catalysts in Polymer Electrolyte Membrane Fuel Cells
Competition between Solvent···Solvent and Solvent···Solute Interactions in the Microhydration of the Tetrafluoroborate Anion, BF4–(H2O)n=1,2,3,4 This study systematically examines the interactions of the tetrafluoroborate anion (BF4–) with up to four water molecules (BF4–(H2O)n=1,2,3,4). Type of Event: Physical Seminar Read more about Competition between Solvent···Solvent and Solvent···Solute Interactions in the Microhydration of the Tetrafluoroborate Anion, BF4–(H2O)n=1,2,3,4
Nitrogen Vacancy Centers as Quantum Sensors There has been a growing interest in nitrogen-vacancy (NV) centers as high precision sensors in biology, chemistry, and physics. NV centers are naturally occurring defects in diamonds. They can detect nanoscale perturbations in local temperature, pressure, magnetic and electric fields. These quantum sensors perform optimally in ambient conditions, and their biocompatibility permits their use in vivo. The electronic states of the NV center can be controlled by optical pumping and measured by optical readout. Type of Event: Physical Seminar Read more about Nitrogen Vacancy Centers as Quantum Sensors