Article
Chemistry, Physical
Pengfei Liu, Mark Freeley, Ali Zarbakhsh, Marina Resmini
Summary: This study utilized neutron reflectivity to investigate the structural changes of stimuli-responsive microgels and nanogels at hydrophobic and hydrophilic interfaces. The results showed that temperature was the primary influencing factor, while concentration played a secondary role. Hydrophobic interactions drove the conformation of the first layer at the interface, which had a key impact on the overall nanogel structure.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Christophe Didier, Elliot P. Gilbert, Jitendra Mata, Vanessa K. Peterson
Summary: This study quantitatively investigates the morphology of lithium metal deposition in batteries using in situ ultra-small and small-angle neutron scattering. The research reveals the complex variations of surface area and interfacial distances influenced by current density and cell cycling history, providing valuable insights into the growth of metallic lithium features detrimental to battery performance. The findings are crucial for the development of safer and high-performance lithium metal batteries.
ADVANCED ENERGY MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Augusta de Santis, Ernesto Scoppola, Maria Francesca Ottaviani, Alexandros Koutsioubas, Lester C. Barnsley, Luigi Paduano, Gerardino D'Errico, Irene Russo Krauss
Summary: The structural properties of cholesterol-containing lipid bilayers with increasing amounts of polyunsaturated omega-3 lipids were investigated using multiple techniques in this study. Results indicate that the different effects of hybrid and symmetric omega-3 phospholipids on lipid bilayers' microscopic organization, with cholesterol able to suppress non-lamellar structures induced by symmetric polyunsaturated lipids. The structural organization of the resulting bilayer does not fit neatly into typical liquid ordered or liquid disordered phases, showing loose packing of lipid chain segments.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Review
Chemistry, Physical
Dev Raj, Alok Kumar, Rohit Kumar Singh, Abhishek Singh Bhadouria, A. S. K. Sinha, Deepak Dwivedi
Summary: As the application of electrocatalyst expands, understanding the mechanisms affecting catalytic efficiency at various length scales becomes crucial. Revealing the dynamics of active sites, which directly impact reactions such as oxygen evolution and hydrogen evolution, is vital to enhance stability and reduce costs. This article analyzes recent progress in using in situ neutron techniques for characterizing electrocatalysts and discusses future challenges in obtaining mechanistic information across multiple scales.
CURRENT OPINION IN ELECTROCHEMISTRY
(2022)
Review
Biochemistry & Molecular Biology
William T. Heller
Summary: SANS is a powerful tool for studying biological and model lipid membranes, enabling details to be revealed. This article provides an overview of its application for studying lipid bilayer vesicles, the advantages of selective deuteration and contrast variation methods, and approaches to modeling SANS data.
Article
Nanoscience & Nanotechnology
Bhaskar Das, Joseph T. Batley, Kathryn L. Krycka, Julie A. Borchers, Patrick Quarterman, Caroline Korostynski, My Nguyen, Ishita Kamboj, Eray S. Aydil, Chris Leighton
Summary: Advances in the synthesis and characterization of colloidal magnetic nanoparticles have provided insights into their complex magnetic behavior and potential applications. This study focuses on the synthesis and characterization of Ni nanoparticles and reveals the presence of a non-ferromagnetic Ni phosphide shell. It also demonstrates bulk-like ferromagnetism in the Ni core and negligible interparticle magnetic interactions. These findings contribute to the understanding of synthesis-structure-property relationships in metallic magnetic nanoparticles and highlight the power of polarized SANS measurement and analysis in magnetic nanoparticle science and technology.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Analytical
Seema Thakral, Kyungtae Kim
Summary: Small-angle scattering (SAS) is a versatile analytical technique that provides detailed structural information at the nanometer scale. It has diverse applications in pharmaceutical material characterization, including identification of liquid-crystalline mesophase of drugs, study of excipient microstructure influence, and optimization of solid dispersions and protein-based therapeutics formulations.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
I. M. Tucker, A. Burley, R. E. Petkova, S. L. Hosking, J. Penfold, R. K. Thomas, P. X. Li, J. R. P. Webster, R. Welbourn, J. Doutch
Summary: The study investigates the adsorption properties of Glycyrrhizic acid, a monodesmosidic triterpenoid saponin extracted from Licorice root, and its self-assembly behavior in solution. It was found that gelation has minimal impact on adsorption, only resulting in a rougher surface texture on a macroscopic length scale. The study also compares the globular micelles formed in aqueous solution with the structure of other saponin micelles, showing only minimal micelle growth with the addition of gelling agents.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Changsheng Zhang, Junming Gou, Junjie Yang, Tianyu Ma, Liangwei Sun, Guangai Sun, Qiang Tian, Guanyun Yan, Liang Chen, Pei Zhang, Yi Liu
Summary: This study investigates the underlying mechanism of large magnetostriction in Fe-Ga alloys through in-situ magnetic small-angle neutron scattering (SANS). The results reveal that the reorientation of nanodomains relevant to face-centered-tetragonal L6 0 nanoprecipitates occurs at relatively lower fields than that of the magnetic domains, contributing to the low-field-triggered large magnetostriction. It is also found that the correlation length can be effectively tuned by simple heat-treatment, which enhances the magnetostriction without enlarging the triggering field.
Article
Chemistry, Physical
Rasmus Palm, Riinu Harmas, Eneli Hark, Ben Kent, Heisi Kurig, Miriam Koppel, Margarita Russina, Indrek Tallo, Tavo Romann, Jitendra Mata, Kenneth Tuul, Enn Lust
Summary: The study explored the impact of synthesis conditions on the formation of porous and graphitic structures of carbon materials, showing that lower synthesis temperatures result in predominantly nano-scale cylindrical geometries, while higher temperatures promote the formation of slit-like structures.
Article
Medicine, Research & Experimental
Peter H. Gilbert, Zhenhuan Zhang, Ken K. Qian, David P. Allen, Rachel Ford, Norman J. Wagner, Yun Liu
Summary: This study investigates the incompatibility of nonionic surfactant Polysorbate 80 (PS80) with antimicrobial agent m-cresol in pharmaceutical formulation. The storage temperature, ionic strength, and component concentration were found to affect the kinetics of micelle aggregation. The cause, coalescence mechanism, and aggregate structure were revealed through small-angle neutron scattering (SANS) analysis. The phase diagram of PS80/m-cresol solution stability and the necessary component concentrations for producing stable formulations were established.
MOLECULAR PHARMACEUTICS
(2022)
Article
Materials Science, Ceramics
Mbaye Ndour, Laurent Chaput, Philippe Jund
Summary: This study prepared ten small size samples of amorphous silica containing 78 atoms using classical molecular dynamics and the BKS empirical potential. The structural characteristics of these samples were found to be in good agreement with experimental data, and dynamical properties were also relatively well compared with neutron scattering experiments. These small dynamically stable structures can be used to study more complicated physical properties, such as thermal conductivity or diffusivity, at a reduced computational cost.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Chemistry, Multidisciplinary
Xin Zhang, Jinxu Zhang, Hua Yang, Chunyong He, Yubin Ke, Seema Singh, Gang Cheng
Summary: This study extracted lignins from different plants to establish a general pattern of their structure in several solvents. Small-angle neutron scattering was used to observe lignin molecules and aggregates. The study obtained important factors affecting the uses of LNPs from SANS data for the first time, and discovered a large hydration shell around LNPs in aqueous solutions.
Article
Chemistry, Physical
Abigail Barclay, Birthe B. Kragelund, Lise Arleth, Martin Cramer Pedersen
Summary: Recent advances in protein expression protocols have allowed for the investigation of structurally complex and disordered biomolecules using small-angle scattering experiments. A modeling scheme has been developed that combines classical form factor based modeling with spherical harmonics-based formulation to accurately calculate scattering profiles from these complex samples. The scheme can account for flexible domains and other structurally elaborate components, and we demonstrate its utility through a case study on a growth hormone receptor membrane protein. We also explore how the scattering profiles vary under different contrasts and discuss the implications for data modeling.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Elisabeth Kadletz, Wim G. Bouwman, Catherine Pappas
Summary: A novel spin echo small-angle neutron scattering (SESANS) concept based on a rotationally symmetric magnetic field geometry is introduced in this paper. The setup and performance of the instrument are presented, along with a comparison between radial and linear SESANS. The results indicate that radial SESANS is only sensitive to scattering along the radial direction.
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2022)
Article
Chemistry, Physical
J. Penfold, R. K. Thomas, P. X. Li
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2015)
Article
Chemistry, Multidisciplinary
Javier Iglesias-Fernandez, Leonardo Darre, Axel Kohlmeyer, Robert K. Thomas, Hsin-Hui Shen, Carmen Domene
Article
Chemistry, Multidisciplinary
Jeffrey Penfold, Robert K. Thomas, Peixun Li, Hui Xu, Ian M. Tucker, Jordan T. Petkov, Devinderjit S. Sivia
Article
Chemistry, Multidisciplinary
Ian M. Tucker, Jordan T. Petkov, Jeffrey Penfold, Robert K. Thomas, Andrew R. Cox, Nick Hedges
Article
Chemistry, Physical
Jeffrey Penfold, Robert K. Thomas, Peixun Li
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2016)
Article
Chemistry, Physical
I. M. Tucker, J. T. Petkov, J. Penfold, R. K. Thomas, A. R. Cox, N. Hedges
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2016)
Article
Chemistry, Physical
Jeffrey Penfold, Robert K. Thomas, Peixun Li
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2016)
Article
Chemistry, Physical
Ning Ning Li, Robert K. Thomas, Adrian R. Rennie
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2016)
Article
Chemistry, Physical
Robert Bradbury, Jeffrey Penfold, Robert K. Thomas, Ian M. Tucker, Jordan T. Petkov, Craig Jones
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2016)
Article
Chemistry, Physical
Robert Brabury, Jeffrey Penfold, Robert K. Thomas, Ian M. Tucker, Jordan T. Petkov, Craig Jones
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2016)
Article
Chemistry, Physical
Peixun Li, Kun Ma, Robert K. Thomas, Jeffrey Penfold
JOURNAL OF PHYSICAL CHEMISTRY B
(2016)
Article
Chemistry, Multidisciplinary
J. Penfold, R. K. Thomas, P. Li, S. N. Batchelor, I. M. Tucker, A. W. Burley
Article
Chemistry, Multidisciplinary
Kun Ma, Pei Xun Li, Chu Chuan Dong, Robert K. Thomas, Jeffrey Penfold
Article
Chemistry, Physical
J. R. Liley, J. Penfold, R. K. Thomas, I. M. Tucker, J. T. Petkov, P. S. Stevenson, I. M. Banat, R. Marchant, M. Rudden, A. Terry, I. Grillo
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2017)
Article
Chemistry, Physical
Jessica R. Liley, Robert K. Thomas, Jeffrey Penfold, Ian M. Tucker, Jordan T. Petkov, Paul Stevenson, John R. P. Webster
JOURNAL OF PHYSICAL CHEMISTRY B
(2017)