A5067142604- Bone Tissue Engineering Materials
- Arsenic contamination and mitigation
- Calcium Carbonate Crystallization and Inhibition
- Silk-based biomaterials and applications
- Iron oxide chemistry and applications
- Groundwater and Isotope Geochemistry
- Advanced Nanomaterials in Catalysis
- Mine drainage and remediation techniques
- Polymer Surface Interaction Studies
- Legume Nitrogen Fixing Symbiosis
- Polysaccharides Composition and Applications
- Polydiacetylene-based materials and applications
- Antimicrobial Peptides and Activities
- Layered Double Hydroxides Synthesis and Applications
- Electrospun Nanofibers in Biomedical Applications
- Paleontology and Stratigraphy of Fossils
- Advanced Photocatalysis Techniques
- Planarian Biology and Electrostimulation
- Ocean Acidification Effects and Responses
- Geochemistry and Elemental Analysis
- 3D Printing in Biomedical Research
- Catalytic Processes in Materials Science
- Multiferroics and related materials
- Dyeing and Modifying Textile Fibers
- Nanocomposite Films for Food Packaging
Washington University in St. Louis
2017-2024
Massachusetts Institute of Technology
2020-2022
Abstract Mineralization of collagen is critical for the mechanical functions bones and teeth. Calcium phosphate nucleation in collagenous structures follows distinctly different patterns highly confined gap regions (nanoscale confinement) than less extrafibrillar spaces (microscale confinement). Although mechanism(s) driving these differences are still largely unknown, free energy may explain two mineralization behaviors. Here, we report on experimentally obtained barriers to intra-...
Abstract Food quality monitoring, particularly, the detection of bacterial pathogens and spoilage throughout food supply chain, is critical to ensure global safety minimize loss. Incorporating sensors into packaging promising, but it challenging achieve required sampling volume while using food‐safe sensor materials. Here, by leveraging water‐based processing silk fibroin, a platform for pathogenic bacteria in realized porous microneedle array; array samples fluid from interior capillary...
During managed aquifer recharge (MAR), injected water significantly alters chemistry in an aquifer, affecting arsenic mobility. To elucidate the effects of dissolved organic matter (DOM) on mobilization during MAR, this bench-scale study examined from arsenopyrite (FeAsS, arsenic-containing sulfide) presence Suwannee River natural matter, humic acid, and fulvic acid (SRNOM, SRHA, SRFA), alginate (Alg), polyaspartate (PA), glutamate (Glu). DOM (SRDOM) decreased mobility short term (<6 h) via...
In this study, a new edible coating material with enhanced mechanical and gas barrier properties was studied by coupling silk fibroin (SF) poly(vinyl alcohol) (PVOH). SF PVOH water suspensions were mixed at different ratios to form multilayered membranes that, after phase separation, assembled on the surface of fresh-cut produce upon dip coating. The effects mixing ratio transparency, properties, vapor, oxygen permeability films investigated. Higher fractions corresponded an increased...
Abstract This review article highlights recent advances in designing biomaterials to be interfaced with food and plants, the goal of enhancing resilience AgroFood infrastructure by boosting crop production, mitigating environmental impact, reducing losses along supply chain. Special attention is given innovations biomaterial‐based approaches platforms for 1) seed enhancement through encapsulation, preservation, controlled release payloads (e.g., plant growth‐promoting microbes) seeds their...
Unveiling the effects of an environmental abundant anion "sulfate" on formation calcium carbonate (CaCO3) is essential to understand mechanisms biominerals like corals and brachiopod shells, as well scale in desalination systems. However, it was experimentally challenging elucidate sulfate–CaCO3 interactions at explicit first step CaCO3 formation: nucleation. In addition, there limited quantitative information precise control nucleation kinetics. Here, heterogeneous monitored real time a...
There is a compelling need to find new materials that meet stringent performance requirements for application in food, water, and agriculture industries while addressing biodegradability, circular life cycle, sustainable sourcing at scale. Regenerated silk fibroin (SF) structural biopolymer with applications biomedicine, optoelectronics, agriculture. Extracted from largely available Bombyx mori cocoons through water-based process, SF fabricated into advanced have competitive merits of...
Managed aquifer recharge (MAR) has been applied to meet quickly growing water demands. However, during MAR operations, the injected can induce dissolution of local minerals and result in release toxic metalloids, such as arsenic. To alleviate this concern, it is pivotal understand effects chemistry on arsenic mobilization MAR. In bench-scale study with geochemical conditions relevant we investigated impacts three environmentally abundant oxyanions (i.e., phosphate, silicate, bicarbonate)...
This study delineates the co-effects of UV/H<sub>2</sub>O<sub>2</sub>and NOM on colloidal stability and surface chemical properties CeO<sub>2</sub>nanoparticles.
Engineering nucleation kinetics of calcium phosphate as seed minerals in an organic template facilitates a sustainable phosphorus management.
Without any cell-mediated activity, cyclic mechanical loads can increase nucleation of calcium phosphate nanocrystals in highly-organized collagen matrices, enhancing bone strength.
Mechanical loads from physiologic activities such as walking and running generate bioelectricity in bones. By mimicking bioelectricity, external electrical stimulations have also been used therapeutically to stimulate bone-forming cells and, thus, promote bone regeneration. However, little is known about the physicochemical mechanism(s) by which drives calcium phosphate mineralization of collagen. Here, we showed that, during vitro collagen absence cells, application pulsed stimulation...
Exposing ceria nanoparticles to high arsenite concentrations will trigger aggregation and settling, while lower promote dissolution through redox interactions.
Natural manganese (Mn) oxide coatings, resulting from the heterogeneous nucleation on foreign substances, have garnered interest based their importance in reaction with organic substances and environmental systems. However, of natural Mn coatings still remains elusive. Here, via fast photochemical oxidation Mn2+(aq), we show that Mn(IV) nuclei form aggregate quartz three distinct successive stages: (i) a nanocrystalline film unaligned grain forms, (ii) nanoislands develop film, (iii)...