11/04/2022
Digging out structural changes of surrounded proteins
Modeling when micelles surrounding membrane proteins can be ignored as well as when — and how — they must be dealt with during time-resolved X-ray solution scattering.
Structural Dynamics
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Structural Dynamics aims at capitalizing on the recent developments in experimental and theoretical methods and techniques that allow a visualization of the electronic and geometric structural changes in “real-time” of chemical, biological and condensed matter systems. The community of scientists and engineers working on structural dynamics in such diverse systems often use similar instrumentation
and methods. The journal welcomes articles dealing with fundamental problems of electronic and structural dynamics that are tackled by new methods such as:
- Time-resolved X-ray and electron diffraction and scattering
- Coherent diffractive imaging
- Time-resolved X-ray spectroscopies (absorption, emission, resonant inelastic scattering, etc.)
- Time-resolved Electron Energy Loss Spectroscopy (EELS) and electron microscopy
- Time-resolved photoelectron spectroscopies (UPS, XPS, ARPES, etc.)
- Multidimensional spectroscopies in the infrared, the visible and the ultraviolet
- Nonlinear spectroscopies in the VUV, the soft and the hard X-ray domains
- Theory and Computational methods and algorithms for the analysis and description of structural dynamics and their associated experimental signals. These new methods are enabled by new instrumentation such as:
- X-ray free electron lasers, which provide flux, coherence and time resolution
- New sources of ultrashort electron pulses
New sources of ultrashort Vacuum Ultraviolet (VUV) to hard X-ray pulses, such as high harmonic generation (HHG) sources or plasma-based sources
- New sources of ultrashort infrared and terahertz (THz) radiation
- New detectors for X-rays and electrons
- New sample handling and delivery schemes
- New computational capabilities
The journal welcomes articles that deal either with scientific or technical aspects of these new methods and instruments. Experimental papers are expected to be brought into relation with theory, and theoretical papers should be connected to present or future experiments. The journal accepts Short Communications, Topical Reviews and Regular Articles in the following subjects:
- Experimental Methodologies
- Theory and Modelling
- Surfaces and Interfaces
- Materials
- Liquids and Solutions
- Biological Systems
10/10/2022
Physical Science Publishing - AIP Publishing LLC
Physical Science Publishing - AIP Publishing LLC
AIP Publishing is a trusted source of research journals, conference proceedings, and essential information for physical scientists everywhere.
07/20/2022
A kiloelectron-volt ultrafast electron micro-diffraction apparatus using low emittance semiconductor photocathodes
A new ultrafast electron diffraction apparatus uses low emittance photocathodes to perform sub-picosecond electron diffraction on micron-scale samples.
We report the design and performance of a time-resolved electron diffraction apparatus capable of producing intense bunches with simultaneously single digit micrometer probe size, long coherence le...
07/12/2021
Probing the small-scale protein motions with a laboratory X-ray
Probing the small-scale protein motions with a laboratory X-ray
An ordinary laboratory X-ray could be used to characterize the molecular motions of a wide variety of biological molecules.
07/12/2021
Emerging indicator of protein dynamics demonstrates good reproducibility and sensitivity to differences in atomic motions
Emerging indicator of protein dynamics demonstrates good reproducibility and sensitivity to differences in atomic motions
Data, theory, and analysis reveal signatures of atomic motions in diffuse X-ray scattering, an emerging crystallography signal.
03/25/2021
Photodissociation of aqueous I 3 − observed with liquid-phase ultrafast mega-electron-volt electron diffraction
Following recent advances in liquid phase MeV Ultrafast Electron Diffraction, the first experiments on solvated molecules are presented. The speed of photodissociation of I3- in water is revealed.
Developing femtosecond resolution methods for directly observing structural dynamics is critical to understanding complex photochemical reaction mechanisms in solution. We have used two recent deve...
02/19/2021
Geometric machine learning algorithm helps sieve through structural data of tiny biological objects
Geometric machine learning algorithm helps sieve through structural data of tiny biological objects
By fusing manifold embedding with machine learning, the researchers create an algorithm that can pick out X-ray diffraction patterns of single particles from an ocean of data.
12/29/2020
Make the right measurement: Discovery of an allosteric inhibition site for p300-HAT
Make the right measurement: Discovery of an allosteric inhibition site for p300-HAT
Histone acetyltransferases (HATs) and histone deacetylases (HDACs) catalyze the dynamic and reversible acetylation of proteins, an epigenetic regulatory mechanism associated with multiple cancers. ...
12/18/2020
Evaluation of serial crystallographic structure determination within megahertz pulse trains
Evaluation of serial crystallographic structure determination within megahertz pulse trains
The new European X-ray Free-Electron Laser (European XFEL) is the first X-ray free-electron laser capable of delivering intense X-ray pulses with a megahertz interpulse spacing in a wavelength rang...
12/14/2020
Liquid-like and rigid-body motions in molecular-dynamics simulations of a crystalline protein
Liquid-like and rigid-body motions in molecular-dynamics simulations of a crystalline protein
To gain insight into crystalline protein dynamics, we performed molecular-dynamics (MD) simulations of a periodic 2 × 2 × 2 supercell of staphylococcal nuclease. We used the resulting MD trajectori...
12/10/2020
A tool for visualizing protein motions in time-resolved crystallography
A tool for visualizing protein motions in time-resolved crystallography
Time-resolved serial femtosecond crystallography (TR-SFX) at an x-ray free electron laser enables protein structural changes to be imaged on time-scales from femtoseconds to seconds. It can, howeve...
12/09/2020
A tool for visualizing protein motions in time-resolved crystallography
A tool for visualizing protein motions in time-resolved crystallography
Time-resolved serial femtosecond crystallography (TR-SFX) at an x-ray free electron laser enables protein structural changes to be imaged on time-scales from femtoseconds to seconds. It can, howeve...
11/25/2020
Real-time tracking of protein unfolding with time-resolved x-ray solution scattering
Real-time tracking of protein unfolding with time-resolved x-ray solution scattering
The correct folding of proteins is of paramount importance for their function, and protein misfolding is believed to be the primary cause of a wide range of diseases. Protein folding has been inves...
11/19/2020
Enhanced dynamics in the anomalous melting regime of DMPG lipid membranes
Enhanced dynamics in the anomalous melting regime of DMPG lipid membranes
Like many soft materials, lipids undergo a melting transition associated with a significant increase in their dynamics. At temperatures below the main melting transition (Tm), all molecular and col...
11/16/2020
Femtosecond spin voltage measurement helps pull spintronics into the ultrafast domain
Femtosecond spin voltage measurement helps pull spintronics into the ultrafast domain
Observing a shift in the chemical potential of one spin direction after ultrafast demagnetization allows authors to determine the magnitude of a femtosecond spin voltage.
11/12/2020
Generation of a large compressive strain wave in graphite by ultrashort-pulse laser irradiation
Generation of a large compressive strain wave in graphite by ultrashort-pulse laser irradiation
We have studied strain wave generation in graphite induced by an intense ultrashort laser pulse. The study was performed in the intensity regime above the ablation threshold of graphite. The aim wa...
11/06/2020
Local photo-mechanical stiffness revealed in gold nanoparticles supracrystals by ultrafast small-angle electron diffraction
Local photo-mechanical stiffness revealed in gold nanoparticles supracrystals by ultrafast small-angle electron diffraction
We demonstrate that highly ordered two-dimensional crystals of ligand-capped gold nanoparticles display a local photo-mechanical stiffness as high as that of solids such as graphite. In out-of-equi...
11/02/2020
Local photo-mechanical stiffness revealed in gold nanoparticles supracrystals by ultrafast small-angle electron diffraction
Local photo-mechanical stiffness revealed in gold nanoparticles supracrystals by ultrafast small-angle electron diffraction
We demonstrate that highly ordered two-dimensional crystals of ligand-capped gold nanoparticles display a local photo-mechanical stiffness as high as that of solids such as graphite. In out-of-equi...
10/27/2020
Ultrafast structural dynamics of photo-reactions observed by time-resolved x-ray cross-correlation analysis
Ultrafast structural dynamics of photo-reactions observed by time-resolved x-ray cross-correlation analysis
We applied angular X-ray Cross-Correlation analysis (XCCA) to scattering images from a femtosecond resolution X-ray free-electron laser pump-probe experiment with solvated PtPOP {[Pt2(P2O5H2)4]4–} ...
10/26/2020
Rapid cooling technique increases nanoparticle beam density for imaging
Rapid cooling technique increases nanoparticle beam density for imaging
Researchers have developed a technique that could improve the reproducibility and efficiency of imaging shock-frozen, isolated, biological, and artificial nanoparticles.
10/22/2020
Method for developing a sub-10 fs ultrafast electron diffraction technology
Method for developing a sub-10 fs ultrafast electron diffraction technology
The experimental observation of femtosecond dynamics in atoms and molecules by stroboscopic technologies utilizing x ray or electron flashes has attracted much attention and has rapidly developed. ...
10/19/2020
Automated tool takes guesswork out of interpreting global structural change in proteins
Automated tool takes guesswork out of interpreting global structural change in proteins
A script detects and correlates electron density changes in a protein from time-resolved crystallography data.
10/16/2020
Imaging plasma formation in isolated nanoparticles with ultrafast resonant scattering
Imaging plasma formation in isolated nanoparticles with ultrafast resonant scattering
We have recorded the diffraction patterns from individual xenon clusters irradiated with intense extreme ultraviolet pulses to investigate the influence of light-induced electronic changes on the s...
10/09/2020
Structural dynamics of incommensurate charge-density waves tracked by ultrafast low-energy electron diffraction
Structural dynamics of incommensurate charge-density waves tracked by ultrafast low-energy electron diffraction
We study the non-equilibrium structural dynamics of the incommensurate and nearly commensurate charge-density wave (CDW) phases in 1T- TaS 2. Employing ultrafast low-energy electron diffraction wit...
10/06/2020
Electrolytes suppress segmental movement in microgels
Electrolytes suppress segmental movement in microgels
A better understanding of the microgel-electrolyte interaction could advance microgel design for drug delivery and other applications.
10/05/2020
Probing nanoscale thermal transport in a GaAs/AlGaAs heterostructure
Probing nanoscale thermal transport in a GaAs/AlGaAs heterostructure
Directly monitoring the lattice temperature evolution in the time domain using ultrafast electron diffraction reveals a decrease in thermal boundary resistance for high temperatures.
10/02/2020
Determination of the dehydration pathway in a flexible metal–organic framework by dynamic in situ x-ray diffraction
Determination of the dehydration pathway in a flexible metal–organic framework by dynamic in situ x-ray diffraction
Understanding guest exchange processes in metal–organic frameworks is an important step toward the rational design of functional materials with tailor-made properties. The dehydration of the flexib...
09/28/2020
Researchers watch protein unfolding in real-time with X-ray solution scattering
Researchers watch protein unfolding in real-time with X-ray solution scattering
Researchers were able to observe the structural dynamic changes of the protein apomyoglobin in solution during folding using X-ray solution scattering.
09/25/2020
Simultaneously probing the absorption of two different materials in a tri-layer system
Simultaneously probing the absorption of two different materials in a tri-layer system
Measurements of absorption at the M-edge of iron and nickel with absolute timing provide greater insight into ultrafast magnetization in related materials.
09/14/2020
Probing magnetization dynamics with nanometer scale sensitivity
Probing magnetization dynamics with nanometer scale sensitivity
A technique that uses resonant small-angle X-ray scattering and near-field masks allows for the study of non-local magnetization dynamics on a nanometer length and femtosecond timescale.
09/14/2020
Origin of core-to-core x-ray emission spectroscopy sensitivity to structural dynamics
Origin of core-to-core x-ray emission spectroscopy sensitivity to structural dynamics
Recently, coherent structural dynamics in the excited state of an iron photosensitizer was observed through oscillations in the intensity of Kα x-ray emission spectroscopy (XES). Understanding the ...
09/03/2020
Simulation of time-resolved x-ray absorption spectroscopy of ultrafast dynamics in particle-hole-excited 4‐(2-thienyl)-2,1,3-benzothiadiazole
Simulation of time-resolved x-ray absorption spectroscopy of ultrafast dynamics in particle-hole-excited 4‐(2-thienyl)-2,1,3-benzothiadiazole
To date, alternating co-polymers based on electron-rich and electron-poor units are the most attractive materials to control functionality of organic semiconductor layers in which ultrafast excited...
08/31/2020
Hole dynamics in a photovoltaic donor-acceptor couple revealed by simulated time-resolved X-ray absorption spectroscopy
Hole dynamics in a photovoltaic donor-acceptor couple revealed by simulated time-resolved X-ray absorption spectroscopy
Theoretical and experimental methodologies that can characterize electronic and nuclear dynamics, and the coupling between the two, are needed to understand photoinduced charge transfer in molecula...
08/21/2020
Toward time-resolved laser T-jump/X-ray probe spectroscopy in aqueous solutions
Toward time-resolved laser T-jump/X-ray probe spectroscopy in aqueous solutions
Most chemical and biochemical reactions in nature and in industrial processes are driven by thermal effects that bring the reactants above the energy barrier for reaction. In aqueous solutions, thi...
08/10/2020
Advances and opportunities in ultrafast X-ray crystallography and ultrafast structural optical crystallography of nuclear and electronic protein dynamics
Advances and opportunities in ultrafast X-ray crystallography and ultrafast structural optical crystallography of nuclear and electronic protein dynamics
Both nuclear and electronic dynamics contribute to protein function and need multiple and complementary techniques to reveal their ultrafast structural dynamics response. Real-space information obt...
07/29/2020
Evaluation of serial crystallographic structure determination within megahertz pulse trains
Evaluation of serial crystallographic structure determination within megahertz pulse trains
The new European X-ray Free-Electron Laser (European XFEL) is the first X-ray free-electron laser capable of delivering intense X-ray pulses with a megahertz interpulse spacing in a wavelength rang...
07/22/2020
Imaging phonon dynamics with ultrafast electron microscopy: Kinematical and dynamical simulations
Imaging phonon dynamics with ultrafast electron microscopy: Kinematical and dynamical simulations
Ultrafast x-ray and electron scattering techniques have proven to be useful for probing the transient elastic lattice deformations associated with photoexcited coherent acoustic phonons. Indeed, fe...
07/17/2020
Liquid-like and rigid-body motions in molecular-dynamics simulations of a crystalline protein
Liquid-like and rigid-body motions in molecular-dynamics simulations of a crystalline protein
To gain insight into crystalline protein dynamics, we performed molecular-dynamics (MD) simulations of a periodic 2 × 2 × 2 supercell of staphylococcal nuclease. We used the resulting MD trajectori...
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Thank you Structural Dynamics for sponsoring . Structural Dynamics aims at capitalizing on the recent developments in experimental and theoretical methods and techniques that allow a visualization of the electronic and geometric structural changes in “real-time” of chemical, biological and condensed matter systems. The community of scientists and engineers working on structural dynamics in such diverse systems often use similar instrumentation and methods. Learn more at https://aca.scitation.org/journal/sdy
Catch up on the latest in Biological Systems from Structural Dynamics.
Earth System Dynamics
https://dx.doi.org/10.2139/ssrn.3639915
19 Pages Posted: 27 Jul 2020
Zhen Chu
Independent
Date Written: 2018
Abstract
This article is about the earth's origin, formation and evolution of. The content involves the dynamic earth, deep earth structure, evolution mechanism, geomagnetic origin. According to the < inertial force equation [J] theory of inference: Venus and the earth has a collision probability. Then on the earth looking basis. Found exactly the same lithosphere strength of satellite magnetic anomaly map and Karman vortex theory and tectonic. Furthermore, reveal the celestial and terrestrial Mesozoic in the Pacific 15°N, 175°W, a collision occurs. To decipher the history of the earth, including orogenic ocean basin, mineralization, disaster and soon.
https://dx.doi.org/10.2139/ssrn.3639915
19 Pages Posted: 27 Jul 2020
Zhen Chu
Independent
Date Written: 2018
Abstract
This article is about the earth's origin, formation and evolution of. The content involves the dynamic earth, deep earth structure, evolution mechanism, geomagnetic origin. According to the < inertial force equation [J] theory of inference: Venus and the earth has a collision probability. Then on the earth looking basis. Found exactly the same lithosphere strength of satellite magnetic anomaly map and Karman vortex theory and tectonic. Furthermore, reveal the celestial and terrestrial Mesozoic in the Pacific 15°N, 175°W, a collision occurs. To decipher the history of the earth, including orogenic ocean basin, mineralization, disaster and soon.
Earth System Structure
https://dx.doi.org/10.2139/ssrn.3640056
12 Pages Posted: 27 Jul 2020 Last revised: 1 Aug 2020
Zhen Chu
Independent
Multiple version iconThere are 5 versions of this paper
Date Written: July 1, 2020
Abstract
The magnetic field and structure of the Earth is a major theoretical problem in geophysics. The 3D model of the Earth system is reconstructed by using the thermo-electro-magnetic principle, the Earth's magnetic field standard reference field IGRF12 model and the earth pipeline theory, combined with the principle of fluid dynamics cylinder flow similarity experiment. Through the theoretical derivation and actual observation and experiment, the relationship between the core-crustal column and the crust is constructed. Study the mantle flow to generate a magnetic field and generate a gravity process. Explore the geomagnetic mechanism and earth structure of the mantle flow in the operation of the Earth system.
https://dx.doi.org/10.2139/ssrn.3640056
12 Pages Posted: 27 Jul 2020 Last revised: 1 Aug 2020
Zhen Chu
Independent
Multiple version iconThere are 5 versions of this paper
Date Written: July 1, 2020
Abstract
The magnetic field and structure of the Earth is a major theoretical problem in geophysics. The 3D model of the Earth system is reconstructed by using the thermo-electro-magnetic principle, the Earth's magnetic field standard reference field IGRF12 model and the earth pipeline theory, combined with the principle of fluid dynamics cylinder flow similarity experiment. Through the theoretical derivation and actual observation and experiment, the relationship between the core-crustal column and the crust is constructed. Study the mantle flow to generate a magnetic field and generate a gravity process. Explore the geomagnetic mechanism and earth structure of the mantle flow in the operation of the Earth system.
Read the latest in Biological Systems from Structural Dynamics!
The latest in Biological Systems from Structural Dynamics!
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A Featured Article published in Structural Dynamics!
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The most important tale is that- The God does not exist but we found the Allah/God Partially.
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