Category

SAXS

ApplicationCharacterizationCustomer publicationsInorganic materialMaterialNanoparticles & colloidsParticle size and size distributionParticlesSAXSTechnique

Single-step preparation of mono-dispersed sulfur nanoparticles for detention of copper

Shevchenko, Natalia; Steinhart, Milos; Tomšík, Elena

Application of sulfur nanoparticles results from biocompatibility, biodegradability, and non-toxicity of the shell that covers sulfur nanoparticles. However, to prepare uniform sulfur nanoparticles still remains a challenge; particularly in aqueous medium when the size of sulfur nanoparticles is not more than 20 nm. In the current work, the detailed investigation…
(Natural) polymersApplicationCharacterizationCompositesCustomer publicationsMaterialOtherPolymer researchSAXSTechnique

Tunable Fluorophobic Effect Determines Nanoparticle Dispersion in Homopolymers and Block Polymers

Marsh, Zachary M.; Blom, Douglas A.; Stefik, Morgan

The controlled placement of nanoparticles (NPs) within homopolymers and block polymers is of broad interest for functional nanomaterials. This manuscript focuses on small molecule-stabilized NPs that bring a large fraction of functionality. For such NP mixtures with block polymers, the overwhelming focus to date has been the use of attractive…
(Natural) polymersApplicationCharacterizationCustomer publicationsMaterialPhase analysisRenewable energySAXSTechnique

Enhanced Conductivity via Homopolymer-Rich Pathways in Block Polymer-Blended Electrolytes

Morris, Melody A.; Sung, Seung Hyun; Ketkar, Priyanka M.; Dura, Joseph A.; Nieuwendaal, Ryan C.; Epps, Thomas H.

The optimization of ionic conductivity and lithium-ion battery stability can be achieved by independently tuning the ion transport and mechanical robustness of block polymer (BP) electrolytes. However, the ionic conductivity of BP electrolytes is inherently limited by the covalent attachment of the ionically conductive block to the mechanically robust block,…
(Natural) polymersApplicationCharacterizationCompositesCustomer publicationsMaterialOrientation analysisPolymer researchSAXSTechnique

Comparative Study of Direct Compounding, Coupling Agent-Aided and Initiator-Aided Reactive Extrusion to Prepare Cellulose Nanocrystal/PHBV (CNC/PHBV) Nanocomposite

Zheng, Ting; Clemons, Craig M.; Pilla, Srikanth

Three compounding methods were compared to determine their effects on the organization of the interphase in nanocomposites of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and cellulose nanocrystals (CNCs) processed via (1) direct compounding, (2) reactive extrusion using a coupling agent (PHBV-g-GMA), or (3) reactive extrusion using a peroxide free-radical initiator (dicumyl peroxide,…
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialPolymer researchSAXSTechnique

Fast Photochromic Dye Response in Rigid Block Polymer Thermosets

Peterson, Colin; Hillmyer, Marc A.

The behavior of photochromic spiropyran (SP) dyes is greatly affected by the local environment in which they reside. Fluid microenvironments such as liquidlike polymers grant favorably fast dye decoloration whereas rigid microenvironments such as glassy polymers inhibit fast dye response. We study the use of disorganized but microphase-separated block polymer…
ApplicationCharacterizationCustomer publicationsFibersFractal dimensionMaterialOrientation analysisOtherSAXSTechnique

4D biofabrication of skeletal muscle microtissues

Apsite, Indra; Uribe, Juan Manuel; Posada, Andrés Fernando; Rosenfeldt, Sabine; Salehi, Sahar; Ionov, Leonid

Skeletal muscle is one of the most abundant tissues in the body. Although it has a relatively good regeneration capacity, it cannot heal in the case of disease or severe damage. Many current tissue engineering strategies fall short due to the complex structure of skeletal muscle. Biofabrication techniques have emerged…
ApplicationCharacterizationCrystalline fractionCustomer publicationsInorganic materialMaterialNanoparticles & colloidsParticlesSAXSShapeSizeTechniqueWAXS

Nucleation and Growth Kinetics of ZnO Nanoparticles Studied by in Situ Microfluidic SAXS/WAXS/UV–Vis Experiments

Herbst, Maria; Hofmann, Eddie; Förster, Stephan

The synthesis of ZnO nanoparticles proceeds through a complex sequence of precursor reactions, nucleation, and growth processes. For further advancement and control of nanoparticle synthesis, a detailed understanding of the mechanisms and kinetics is essential. With the recent advancement in X-ray scattering and spectroscopy methods, in situ experiments during nanoparticle…
ApplicationCharacterizationCustomer publicationsMaterialMetalsNanoparticles & colloidsParticle size and size distributionParticlesSAXSShapeSizeTechnique

Two Growth Mechanisms of Thiol-Capped Gold Nanoparticles Controlled by Ligand Chemistry

Chen, Xuelian; Wei, Meng; Jiang, Shaohua; Förster, Stephan

Thiols play an important role in the synthesis of well-defined nanoparticles (NPs) with tailored properties, but their effects on the formation kinetics of NPs are still under investigation. Here, we used in situ small-angle X-ray scattering (SAXS)/UV–vis spectroscopy and time-dependent transmission electron microscopy (TEM) to elucidate the role of thiols…
(Natural) polymersApplicationCharacterizationCustomer publicationsFractal dimensionMaterialNanoparticles & colloidsParticlesSAXSShapeSizeTechnique

Soft cellulose II nanospheres: sol–gel behaviour, swelling and material synthesis

Beaumont, Marco; Rosenfeldt, Sabine; Tardy, Blaise L.; Gusenbauer, Claudia; Khakalo, Alexey; Nonappa; Opietnik, Martina; Potthast, Antje; Rojas, Orlando J.; Rosenau, Thomas

High axial aspect crystalline nanomaterials have emerged as polymeric building blocks for the construction of supermaterials. In contrast to this form, amorphous nanospheres have remained largely untapped. This is especially peculiar in the context of material assembly, due to the wide range of opportunities they offer by virtue of their…
ApplicationCharacterizationCustomer publicationsInorganic materialMaterialParticlesProteins & DNA/RNASAXSShapeSizeStructural biologyTechnique

Probing the Nanostructure and Arrangement of Bacterial Magnetosomes by Small-Angle X-Ray Scattering

Rosenfeldt, Sabine; Riese, Cornelius N.; Mickoleit, Frank; Schüler, Dirk; Schenk, Anna S.

Magnetosomes are membrane-enveloped single-domain ferromagnetic nanoparticles enabling the navigation of magnetotactic bacteria along magnetic field lines. Strict control over each step of biomineralization generates particles of high crystallinity, strong magnetization, and remarkable uniformity in size and shape, which is particularly interesting for many biomedical and biotechnological…