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Showing 1 to 12 of 382 entries
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Visualization of dislocation dynamics in colloidal crystals

Computer and Information Science and Engineering Minority-Serving Institutions Research Expansion Program AND Program Evaluation

Cohen I, Schall P, Weitz DA.
GSID: fncaUMA2eM4J
P Schall, I Cohen, DA Weitz, F Spaepen - Science, 2004 - science.org

The dominant mechanism for creating large irreversible strain in atomic crystals is the motion of dislocations, a class of line defects in the crystalline lattice. Here we show that the motion of dislocations can also be observed in strained...

01-03 fMRI in schizophrenia and cannabis users.

Acta neuropsychiatrica

Cohen M, Carr V, Ward PB, Ehlkes T, Johnston P, Thienel R, Schall U.
PMID: 27397344
Acta Neuropsychiatr. 2006 Dec;18(6):314. doi: 10.1017/S0924270800031859.

No abstract available.

Large-scale virtual screening on public cloud resources with Apache Spark.

Journal of cheminformatics

Capuccini M, Ahmed L, Schaal W, Laure E, Spjuth O.
PMID: 28316653
J Cheminform. 2017 Mar 06;9:15. doi: 10.1186/s13321-017-0204-4. eCollection 2017.

BACKGROUND: Structure-based virtual screening is an in-silico method to screen a target receptor against a virtual molecular library. Applying docking-based screening to large molecular libraries can be computationally expensive, however it constitutes a trivially parallelizable task. Most of the...

Terahertz and mid-infrared plasmons in three-dimensional nanoporous graphene.

Nature communications

D'Apuzzo F, Piacenti AR, Giorgianni F, Autore M, Guidi MC, Marcelli A, Schade U, Ito Y, Chen M, Lupi S.
PMID: 28345584
Nat Commun. 2017 Mar 27;8:14885. doi: 10.1038/ncomms14885.

Two-dimensional (2D) graphene emerged as an outstanding material for plasmonic and photonic applications due to its charge-density tunability, high electron mobility, optical transparency and mechanical flexibility. Recently, novel fabrication processes have realised a three-dimensional (3D) nanoporous configuration of high-quality...

Universal slip dynamics in metallic glasses and granular matter - linking frictional weakening with inertial effects.

Scientific reports

Denisov DV, Lőrincz KA, Wright WJ, Hufnagel TC, Nawano A, Gu X, Uhl JT, Dahmen KA, Schall P.
PMID: 28262791
Sci Rep. 2017 Mar 06;7:43376. doi: 10.1038/srep43376.

Slowly strained solids deform via intermittent slips that exhibit a material-independent critical size distribution. Here, by comparing two disparate systems - granular materials and bulk metallic glasses - we show evidence that not only the statistics of slips but...

Critical Casimir interactions between colloids around the critical point of binary solvents.

Soft matter

Stuij SG, Labbé-Laurent M, Kodger TE, Maciołek A, Schall P.
PMID: 28574564
Soft Matter. 2017 Aug 09;13(31):5233-5249. doi: 10.1039/c7sm00599g.

Critical Casimir interactions between colloidal particles arise from the confinement of fluctuations of a near-critical solvent in the liquid gap between closely-spaced particles. So far, the comparison of theoretical predictions and experimental measurements of critical Casimir forces (CCFs) has...

DOOMED: Direct Online Optimization of Modeling Errors in Dynamics.

Big data

Ratliff N, Meier F, Kappler D, Schaal S.
PMID: 27992267
Big Data. 2016 Dec;4(4):253-268. doi: 10.1089/big.2016.0041.

It has long been hoped that model-based control will improve tracking performance while maintaining or increasing compliance. This hope hinges on having or being able to estimate an accurate inverse dynamics model. As a result, substantial effort has gone...

Totally asymmetric simple exclusion process simulations of molecular motor transport on random networks with asymmetric exit rates.

Physical review. E, Statistical, nonlinear, and soft matter physics

Denisov DV, Miedema DM, Nienhuis B, Schall P.
PMID: 26651730
Phys Rev E Stat Nonlin Soft Matter Phys. 2015 Nov;92(5):052714. doi: 10.1103/PhysRevE.92.052714. Epub 2015 Nov 19.

Using the totally asymmetric simple-exclusion-process and mean-field transport theory, we investigate the transport in closed random networks with simple crossing topology-two incoming, two outgoing segments, as a model for molecular motor motion along biopolymer networks. Inspired by in vitro...

Infrared evidence of a Slater metal-insulator transition in NaOsO₃.

Scientific reports

Vecchio IL, Perucchi A, Di Pietro P, Limaj O, Schade U, Sun Y, Arai M, Yamaura K, Lupi S.
PMID: 24141899
Sci Rep. 2013 Oct 21;3:2990. doi: 10.1038/srep02990.

The magnetically driven metal-insulator transition (MIT) was predicted by Slater in the fifties. Here a long-range antiferromagnetic (AF) order can open up a gap at the Brillouin electronic band boundary regardless of the Coulomb repulsion magnitude. However, while many...

Is imitation learning the route to humanoid robots?.

Trends in cognitive sciences

Schaal S.
PMID: 10354577
Trends Cogn Sci. 1999 Jun;3(6):233-242. doi: 10.1016/s1364-6613(99)01327-3.

This review investigates two recent developments in artificial intelligence and neural computation: learning from imitation and the development of humanoid robots. It is postulated that the study of imitation learning offers a promising route to gain new insights into...

Auditory event-related potential indices of fronto-temporal information processing in schizophrenia syndromes: valid outcome prediction of clozapine therapy in a three-year follow-up.

The international journal of neuropsychopharmacology

Schall U, Catts SV, Karayanidis F, Ward PB.
PMID: 11281974
Int J Neuropsychopharmacol. 1999 Jun;2(2):83-93. doi: 10.1017/S1461145799001418.

Reliability, specificity, and validity of three event-related potential (ERP) indices of non-attended and attended auditory information processing [the mismatch negativity (MMN), the novelty-P3a and the target-P3b] were assessed in 21 healthy subjects and 25 schizophrenic patients while performing a...

Brilliant, coherent far-infrared (THz) synchrotron radiation.

Physical review letters

Abo-Bakr M, Feikes J, Holldack K, Kuske P, Peatman WB, Schade U, Wüstefeld G, Hübers HW.
PMID: 12689227
Phys Rev Lett. 2003 Mar 07;90(9):094801. doi: 10.1103/PhysRevLett.90.094801. Epub 2003 Mar 06.

A new technology for generating steady state, brilliant, broadband, coherent, far-infrared (FIR) radiation in electron storage rings is presented, suitable for FIR spectroscopy. An FIR power increase of up to 100 000 compared to the normal, incoherent synchrotron radiation...

Showing 1 to 12 of 382 entries