Stefik, Morgan
Atomic Layer Deposition of Bismuth Vanadates for Solar Energy Materials
The fabrication of porous nanocomposites is key to the advancement of energy conversion and storage devices that interface with electrolytes. Bismuth vanadate, BiVO4, is a promising oxide for solar water splitting where the controlled fabrication of BiVO4 layers within porous, conducting scaffolds has remained a challenge. Here, the atomic layer…
Improving the Transparency of Ultra-Drawn Melt-Crystallized Polyethylenes: Toward High-Modulus/High-Strength Window Application
Shen, Lihua; Nickmans, Koen; Severn, John; Bastiaansen, Cees W. M.
Highly transparent, ultradrawn high-density polyethylene (HDPE) films were successfully prepared using compression molding and solid-state drawing techniques. The low optical transmittance (90%) by incorporating a small amount (>1 wt %/wt) of specific additives to HDPE materials prior to drawing. It is shown that additives with…
In vitro imaging of β-cells using fluorescent cubic bicontinuous liquid crystalline nanoparticles
Miceli, V.; Meli, V.; Blanchard-Desce, M.; Bsaibess, T.; Pampalone, M.; Conaldi, P. G.; Caltagirone, C.; Obiols-Rabasa, M.; Schmidt, J.; Talmon, Y.; Casu, A.; Murgia, S.
To evaluate the potential of monoolein-based cubic bicontinuous liquid crystalline nanoparticles (cubosomes) as diagnostic tools in diabetes and pancreatic β-cell transplantation, fluorescent cubosomes were formulated, entrapping within the lipid bilayer a newly synthesized, potent, hydrophobic dye. Cryo-TEM, SAXS, and DLS were performed to assess the morphological and structural aspects of…
Blocked Shape Memory Effect in Negative Poisson’s Ratio Polymer Metamaterials
Boba, Katarzyna; Bianchi, Matteo; McCombe, Greg; Gatt, Ruben; Griffin, Anselm C.; Richardson, Robert M.; Scarpa, Fabrizio; Hamerton, Ian; Grima, Joseph N.
We describe a new class of negative Poisson’s ratio (NPR) open cell PU–PE foams produced by blocking the shape memory effect in the polymer. Contrary to classical NPR open cell thermoset and thermoplastic foams that return to their auxetic phase after reheating (and therefore limit their use in technological applications),…
The sulfated polysaccharide from a marine red microalga as a platform for the incorporation of zinc ions
Netanel Liberman, Gal; Ochbaum, Guy; (Malis) Arad, Shoshana; Bitton, Ronit
The cell-wall sulfated polysaccharide of the marine red microalga Porphyridium sp. is a high molecular weight biopolymer that has potential for use as a platform for metal complexation for various applications. This paper describes the structural and rheological characterization and antibacterial activity of the polysaccharide in combination with Zn2+ (Zn-PS).…
High Modulus Regenerated Cellulose Fibers Spun from a Low Molecular Weight Microcrystalline Cellulose Solution
Zhu, Chenchen; Richardson, Robert M.; Potter, Kevin D.; Koutsomitopoulou, Anastasia F.; van Duijneveldt, Jeroen S.; Vincent, Sheril R.; Wanasekara, Nandula D.; Eichhorn, Stephen J.; Rahatekar, Sameer S.
We have developed a novel process to convert low molecular weight microcrystalline cellulose into stiff regenerated cellulose fibers using a dry-jet wet fiber spinning process. Highly aligned cellulose fibers were spun from optically anisotropic microcrystalline cellulose/1-ethyl-3-methylimidazolium diethyl phosphate (EMImDEP) solutions. As the cellulose concentration increased from 7.6 to 12.4…
Nanostructured Antimony-Doped Tin Oxide Layers with Tunable Pore Architectures as Versatile Transparent Current Collectors for Biophotovoltaics
Peters, Kristina; Lokupitiya, Hasala N.; Sarauli, David; Labs, Mathias; Pribil, Mathias; Rathouský, Jiří; Kuhn, Alexander; Leister, Dario; Stefik, Morgan; Fattakhova-Rohlfing, Dina
Nanostructured transparent conducting oxide (TCO) layers gain increasing importance as high surface area electrodes enabling incorporation of functional redox species with high loading. The fabrication of porous TCO films, namely, antimony-doped tin oxide (ATO), is reported using the self-assembly of preformed ATO nanocrystals with poly(ethylene oxide-b-hexyl acrylate) (PEO-b-PHA) block…
Toward Tailored Film Morphologies: The Origin of Crystal Orientation in Hybrid Perovskite Thin Films
Oesinghaus, Lukas; Schlipf, Johannes; Giesbrecht, Nadja; Song, Lin; Hu, Yinghong; Bein, Thomas; Docampo, Pablo; Müller-Buschbaum, Peter
Efficient perovskite solar cells can be produced by a wide variety of different methods. Previous results show that controlling the film morphology is critical to enhance the efficiency of the prepared devices. Here, grazing-incidence wide-angle X-ray scattering (GIWAXS) is used to study the morphology and especially the orientation distribution of…
Disease-Homologous Mutation in the Cation Diffusion Facilitator Protein MamM Causes Single-Domain Structural Loss and Signifies Its Importance
Barber-Zucker, Shiran; Uebe, René; Davidov, Geula; Navon, Yotam; Sherf, Dror; Chill, Jordan H.; Kass, Itamar; Bitton, Ronit; Schüler, Dirk; Zarivach, Raz
Cation diffusion facilitators (CDF) are highly conserved, metal ion efflux transporters that maintain divalent transition metal cation homeostasis. Most CDF proteins contain two domains, the cation transporting transmembrane domain and the regulatory cytoplasmic C-terminal domain…
Chaperonin-inspired pH protection by mesoporous silica SBA-15 on myoglobin and lysozyme
Lynch, Michele M.; Liu, Jichuan; Nigra, Michael; Coppens, Marc-Olivier
Langmuir, 2016, vol 32, 37, pp. 9604–9610DOI:Visit the full articleBack to the overview