Filters








13,860 Hits in 6.5 sec

Evolving SAXS versatility: solution X-ray scattering for macromolecular architecture, functional landscapes, and integrative structural biology

Chris A Brosey, John A Tainer
2019 Current Opinion in Structural Biology  
Small-angle X-ray scattering (SAXS) has emerged as an enabling integrative technique for comprehensive analyses of macromolecular structures and interactions in solution.  ...  Here, we discuss evolving SAXS theory, methods, and applications that extend the field of small-angle scattering beyond simple shape characterization.  ...  Acknowledgements Our work on SAXS analysis is supported by National Institutes of Health (NIH) grants (P01 CA92584, R35 CA220430), the Cancer Prevention and Research Institute of Texas (RR140052 and RP180813  ... 
doi:10.1016/j.sbi.2019.04.004 pmid:31204190 pmcid:PMC6778498 fatcat:z5tdy4ffynevjg26p2a4fnzyr4

Core structure of latent heavy-ion tracks in {100} LiF derived by small-angle X-ray scattering

Sameer Abu Saleh, Yehuda Eyal
2007 Journal of Applied Crystallography  
Radial electron densities within 27-111 mm-long ion damage trails, 'latent ion tracks', created in {100} LiF by irradiation with GeV Pb and U projectiles, have been derived by means of small-angle X-ray  ...  scattering.  ...  This work was supported by grant 23/03 of the Israel Science Foundation, and by the S. Langberg Nuclear Research Fund at the Technion.  ... 
doi:10.1107/s0021889807000064 fatcat:yxuoj34genc35frai7r6wpocha

Small Angle X-Ray Scattering Technique for the Particle Size Distribution of Nonporous Nanoparticles

A. Agbabiaka, M. Wiltfong, C. Park
2013 Journal of Nanoparticles  
A small angle X-ray scattering technique is a promising method used for characterizing nanoparticle sizes. It has distinctive advantages over other techniques such as electron microscope techniques.  ...  In this paper, we review the state-of-the-art methods for determining the sizes of nanoparticles with small angle X-ray experiments and discuss the advantages and limitations of the state-of-the-art methods  ...  [21] , differential mobility analysis, dynamic light scattering (DLS) [22] , and small angle X-ray scattering (SAXS).  ... 
doi:10.1155/2013/640436 fatcat:imdz4d6cfvhzndsh3h6hsxcuuu

Superresolution Fluorescence Microscopy within a Scanning Electron Microscope

Craig L. Hetherington, Connor G. Bischak, Claire E. Stachelrodt, Jake T. Precht, Zhe Wang, Darrell G. Schlom, Naomi S. Ginsberg
2015 Biophysical Journal  
The Electron Microscopy DataBank (EMDB) is growing rapidly, accumulating biological structural data obtained cryo-electron microscopy (cryo-EM).  ...  Examples of search results from different types of query structures are discussed.  ...  Small angle X-ray and neutron scattering (SAS) experiments and molecular modelling offer powerful tools to understand protein behaviour in solution.  ... 
doi:10.1016/j.bpj.2014.11.1054 fatcat:gzqcbhktsjdxhpz6db4belv6au

Femtosecond manipulation of spins, charges, and ions in nanostructures, thin films, and surfaces

F. Carbone, M. Hengsberger, L. Castiglioni, J. Osterwalder
2017 Structural Dynamics  
electronic and structural dynamics in surfaces and adsorbate layers, the light-induced control of collective electronic modes in nanowires and thin films, and the real-space/real-time evolution of the  ...  In this review, we describe the use of time-resolved electron-based methods to address specific questions such as the ordering properties of self-assembled nanoparticles supracrystals, the interplay between  ...  DYNAMICAL IMAGING OF IONS, FS SMALL ANGLE ELECTRON DIFFRACTION, AND X-RAY DIFFRACTIVE IMAGING To retrieve the dynamical ordering/disordering properties of a self-assembled supracrystal of coated gold NPs  ... 
doi:10.1063/1.4995541 pmid:29308416 pmcid:PMC5736395 fatcat:tpjswsxhqzhjjkufqlexo3sws4

Structure-Property Relationships in Waspaloy via Small Angle Scattering and Electrical Resistivity Measurements [chapter]

Ricky L. Whelchel, Rosario A. Gerhardt, Ken Littrell
2012 Superalloy 718 and Derivatives  
Particle size distributions of γ' phase were obtained for Waspaloy specimens aged at 725°C and 800°C for times ranging from 120 s to approximately 1x10 6 s through fitting small angle neutron scattering  ...  The electrical response was modeled utilizing a microstructural model that accounts for conduction electron scattering from both precipitates and solute atoms.  ...  Department of Energy.  ... 
doi:10.1002/9781118495223.ch65 fatcat:7zi4546g2nflpow37q2ow4uqxi

Peptide−Silica Hybrid Networks: Biomimetic Control of Network Mechanical Behavior

Aysegul Altunbas, Nikhil Sharma, Matthew S. Lamm, Congqi Yan, Radhika P. Nagarkar, Joel P. Schneider, Darrin J. Pochan
2009 ACS Nano  
The physical characterization of the hybrid networks via electron microscopy and small-angle scattering is detailed and correlated with changes in the network mechanical behavior.  ...  The nanostructure and consequent mechanical characteristics of these hybrid networks can be modulated by changing the stoichiometric parameters of the sol--gel process.  ...  Small-angle X-ray scattering (SAXS) and small-angle neutron scattering (SANS) were utilized to globally quantify changes in the local structure of silicified MAX1 (via TEOS) and silicified MAX8 (via TMOS  ... 
doi:10.1021/nn901226h pmid:20028097 pmcid:PMC3488860 fatcat:u2zmaargp5gkhluu2hovoz33j4

Supramolecular Properties of the Proline-Rich γ -Zein N-Terminal Domain

Marcelo J. Kogan, Ionara Dalcol, Pau Gorostiza, Carmen Lopez-Iglesias, Ramon Pons, Miquel Pons, Fausto Sanz, Ernest Giralt
2002 Biophysical Journal  
In a preliminary recent work we used atomic force microscopy to study the surface organization of the octamer and transmission electron microscopy to visualize aggregates of the peptide from aqueous solution  ...  Fibrils formed on graphite are generated by assembly of solution micelles. Based on the results of these studies, we focused exclusively on the micellar model.  ...  We thank David Bellido for assistance with transmission electronic microscopy experiments at Serveis Científico-tècnics of the Universitat de Barcelona.  ... 
doi:10.1016/s0006-3495(02)75243-0 pmid:12124299 pmcid:PMC1302221 fatcat:5eudhqr7cjesfnbaxcp2xnprw4

Scanning X-Ray Nanodiffraction on Dictyostelium discoideum

Marius Priebe, Marten Bernhardt, Christoph Blum, Marco Tarantola, Eberhard Bodenschatz, Tim Salditt
2014 Biophysical Journal  
In addition to nanobeam small-angle x-ray scattering, we have evaluated the x-ray differential phase contrast in view of the projected electron density.  ...  The spatially resolved small-angle x-ray scattering signal shows characteristic streaklike patterns in reciprocal space, which we attribute to fiber bundles of the actomyosin network.  ...  We further acknowledge Simon Castorph for help in implementing the streak diffraction model, as well as Bastian Hartmann for many technical contributions in instrumentation and the experimental setup.  ... 
doi:10.1016/j.bpj.2014.10.027 pmid:25468345 pmcid:PMC4255453 fatcat:byavwkgo4bdahhkoarxeee4x2a

Detection of Ring and Adatom Defects in Activated Disordered Carbon via Fluctuation Nanobeam Electron Diffraction

Andrew V. Martin, Espen D. Bøjesen, Timothy C. Petersen, Cheng Hu, Mark J. Biggs, Matthew Weyland, Amelia C. Y. Liu
2020 Small  
These observations support models of disordered porous carbons based on curved graphene networks and explain how large amounts of free volume can be created with surprisingly small changes in the average  ...  To address this, the measurement of the 3D pair-angle distribution function using nanodiffraction patterns from high-energy electrons is demonstrated.  ...  Early structural models for these carbons based on x-ray diffraction measurements and high resolution transmission electron microscopy (HRTEM) characterised the initial structure in terms of basic structural  ... 
doi:10.1002/smll.202000828 pmid:32383542 fatcat:f4daujghafhwfhhhk4atprzkme

Application of small-angle X-ray and neutron scattering techniques to the characterisation of starch structure: A review

Jaroslav Blazek, Elliot Paul Gilbert
2011 Carbohydrate Polymers  
Keywords: Small-angle X-ray scattering Small-angle neutron scattering Starch Structure Review Lamella Model Granule a b s t r a c t Scattering methods offer the unique potential to indirectly probe materials  ...  The most significant achievement of small-angle scattering techniques in starch science has been the quantification of the lamellar architecture of semicrystalline growth rings in native starch granules  ...  electron densities) on the small-angle scattering curve.  ... 
doi:10.1016/j.carbpol.2011.02.041 fatcat:rbtjrp5gkbdtjf3ahdickoakwe

GISAXS View of Induced Morphological Changes in Nanostructured CeVO4Thin Films

Magdy Lučić Lavčević, Aleksandra Turković, Pavo Dubček, Zorica Crnjak Orel, Bojan Orel, Sigrid Bernstorff
2011 Journal of Nanomaterials  
An analysis of morphological modifications in these films, induced by ultrasonication, annealing, and introduction of lithium ions, was performed, using the grazing-incidence small-angle X-ray scattering  ...  The GISAXS results are discussed and related with complementary examinations of the same films in real space, performed by scanning electron microscopy on a different length scale.  ...  , Education and Sport of the Republic of Croatia.  ... 
doi:10.1155/2011/303808 fatcat:ckqjrmrsufbtrjkg53yymhept4

Scanning electron microscope measurement of width and shape of 10 nm patterned lines using a JMONSEL-modeled library

J.S. Villarrubia, A.E. Vladár, B. Ming, R.J. Kline, D.F. Sunday, J.S. Chawla, S. List
2015 Ultramicroscopy  
Keywords: Critical dimension (CD); critical dimension small angle x-ray scattering (CD-SAXS); dimentional metrology; model-based metrology; scanning electron microscopy (SEM); transmission electron microscopy  ...  Profiles thereby determined agreed with those determined by transmission electron microscopy and critical dimension small-angle x-ray scattering to better than 1 nm.  ...  Results will be given in Sec. 6 and compared to independent determinations of pitch, width, and shape by transmission electron microscopy (TEM) cross section and critical dimension small angle x-ray  ... 
doi:10.1016/j.ultramic.2015.01.004 pmid:25747180 fatcat:ny3kapjavrajdi6i22knrldow4

Rapid interpretation of small-angle X-ray scattering data

Marie Weiel, Ines Reinartz, Alexander Schug, Alexey Onufriev
2019 PLoS Computational Biology  
Small-angle X-ray scattering (SAXS) is an experimental technique for structural characterization of macromolecules in solution and enables time-resolved analysis of conformational changes under physiological  ...  Dynamically fitting an initial structure towards a scattering intensity, such simulations produce atomistic models in agreement with the target data.  ...  Acknowledgments We would like to thank Alexander Björling for giving helpful advice and providing valuable support with the scattering-guided MD software package.  ... 
doi:10.1371/journal.pcbi.1006900 pmid:30901335 pmcid:PMC6447237 fatcat:oxvap56krbfgbatohoqpvuryqm

On X-ray scattering model for single particles, Part I: The legacy of protein crystallography [article]

Aliakbar Jafarpour
2014 arXiv   pre-print
The scattering model of protein crystallography is valid for very small crystals or those like crystalized biomolecules with small coherent subunits.  ...  Emerging coherent X-ray scattering patterns of single particles have shown dominant morphological signatures in agreement with predictions of the scattering model used for conventional protein crystallography  ...  Coherent scattering from individual identical objects at different orientations and the incoherent addition of these patterns is the basis of Small-Angle X-ray Scattering or SAXS [41] .  ... 
arXiv:1407.6595v2 fatcat:gu6as65dnfb67krebjvd4eshea
« Previous Showing results 1 — 15 out of 13,860 results