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Showing 1 to 12 of 677 entries
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The role of dendritic inhibition in shaping the plasticity of excitatory synapses.

Frontiers in neural circuits

Bar-Ilan L, Gidon A, Segev I.
PMID: 23565076
Front Neural Circuits. 2013 Apr 03;6:118. doi: 10.3389/fncir.2012.00118. eCollection 2012.

Using computational tools we explored the impact of local synaptic inhibition on the plasticity of excitatory synapses in dendrites. The latter critically depends on the intracellular concentration of calcium, which in turn, depends on membrane potential and thus on...

Sparsity-based super-resolved coherent diffraction imaging of one-dimensional objects.

Nature communications

Sidorenko P, Kfir O, Shechtman Y, Fleischer A, Eldar YC, Segev M, Cohen O.
PMID: 26345495
Nat Commun. 2015 Sep 08;6:8209. doi: 10.1038/ncomms9209.

Phase-retrieval problems of one-dimensional (1D) signals are known to suffer from ambiguity that hampers their recovery from measurements of their Fourier magnitude, even when their support (a region that confines the signal) is known. Here we demonstrate sparsity-based coherent...

Interplay between evanescence and disorder in deep subwavelength photonic structures.

Nature communications

Herzig Sheinfux H, Kaminer I, Genack AZ, Segev M.
PMID: 27708260
Nat Commun. 2016 Oct 06;7:12927. doi: 10.1038/ncomms12927.

Deep subwavelength features are expected to have minimal impact on wave transport. Here we show that in contrast to this common understanding, disorder can have a dramatic effect in a one-dimensional disordered optical system with spatial features a thousand...

Ypt/Rab GTPases regulate two intersections of the secretory and the endosomal/lysosomal pathways.

Cellular logistics

Lipatova Z, Segev N.
PMID: 25610722
Cell Logist. 2014 Jul 03;4(3):e954870. doi: 10.4161/21592780.2014.954870. eCollection 2014.

A prevailing question in the Ypt/Rab field is whether these conserved GTPases are specific to cellular compartments. The established role for Ypt1 and its human homolog Rab1 is in endoplasmic reticulum (ER)-to-Golgi transport. More recently these regulators were implicated...

Molecular beam brightening by shock-wave suppression.

Science advances

Segev Y, Bibelnik N, Akerman N, Shagam Y, Luski A, Karpov M, Narevicius J, Narevicius E.
PMID: 28345047
Sci Adv. 2017 Mar 08;3(3):e1602258. doi: 10.1126/sciadv.1602258. eCollection 2017 Mar.

Supersonic beams are a prevalent source of cold molecules used in the study of chemical reactions, atom interferometry, gas-surface interactions, precision spectroscopy, molecular cooling, and more. The triumph of this method emanates from the high densities produced in relation...

Wavefront shaping through emulated curved space in waveguide settings.

Nature communications

Sheng C, Bekenstein R, Liu H, Zhu S, Segev M.
PMID: 26899285
Nat Commun. 2016 Feb 22;7:10747. doi: 10.1038/ncomms10747.

The past decade has witnessed remarkable progress in wavefront shaping, including shaping of beams in free space, of plasmonic wavepackets and of electronic wavefunctions. In all of these, the wavefront shaping was achieved by external means such as masks,...

Distinguishing Self-Assembled Pyrene Structures from Exfoliated Graphene.

Langmuir : the ACS journal of surfaces and colloids

Varenik M, Green MJ, Regev O.
PMID: 27723350
Langmuir. 2016 Oct 18;32(41):10699-10704. doi: 10.1021/acs.langmuir.6b03379. Epub 2016 Oct 10.

Sonication-assisted graphene production from graphite is a popular lab-scale approach in which ultrasound energy breaks down graphite sheets into graphene flakes in aqueous medium. Dispersants (surfactant molecules) are incorporated into the solution to prevent individual graphene flakes from reaggregating....

Concurrence of High Fat Diet and APOE Gene Induces Allele Specific Metabolic and Mental Stress Changes in a Mouse Model of Alzheimer's Disease.

Frontiers in behavioral neuroscience

Segev Y, Livne A, Mints M, Rosenblum K.
PMID: 27656136
Front Behav Neurosci. 2016 Sep 05;10:170. doi: 10.3389/fnbeh.2016.00170. eCollection 2016.

Aging is the main risk factor for neurodegenerative diseases, including Alzheimer's disease (AD). However, evidence indicates that the pathological process begins long before actual cognitive or pathological symptoms are apparent. The long asymptomatic phase and complex integration between genetic,...

Graphite-to-Graphene: Total Conversion.

Advanced materials (Deerfield Beach, Fla.)

Buzaglo M, Bar IP, Varenik M, Shunak L, Pevzner S, Regev O.
PMID: 27991687
Adv Mater. 2017 Feb;29(8). doi: 10.1002/adma.201603528. Epub 2016 Dec 19.

The rush to develop graphene applications mandates mass production of graphene sheets. However, the currently available complex and expensive production technologies are limiting the graphene commercialization. The addition of a protective diluent to graphite during ball-milling is demonstrated to...

Non-diffracting multi-electron vortex beams balancing their electron-electron interactions.

Nature communications

Mutzafi M, Kaminer I, Harari G, Segev M.
PMID: 28935885
Nat Commun. 2017 Sep 21;8(1):650. doi: 10.1038/s41467-017-00651-z.

The wave-like nature of electrons has been known for almost a century, but only in recent years has the ability to shape the wavefunction of EBeams (Electron-Beams) become experimentally accessible. Various EBeam wavefunctions have been demonstrated, such as vortex,...

PS/CTAB/silica composites from room temperature polymerization of high internal phase emulsion gels.

Journal of colloid and interface science

Zhang T, Xu G, Li ZF, Regev O, Maddumaarachchi M, Blum FD.
PMID: 25897852
J Colloid Interface Sci. 2015 Aug 01;451:161-9. doi: 10.1016/j.jcis.2015.04.002. Epub 2015 Apr 06.

Polystyrene (PS)/cetyltrimethylammonium bromide (CTAB)/silica composites were prepared by CTAB-catalyzed in-situ polymerization of high internal phase emulsion gels (HIPE gels) at room temperature. The room temperature approach in HIPE gels yielded mono-dispersed PS/CTAB/silica spherical composite particles with sizes of 121...

Composite multihump vector solitons carrying topological charge.

Physical review letters

Musslimani ZH, Segev M, Christodoulides DN, Soljacic M.
PMID: 11017469
Phys Rev Lett. 2000 Feb 07;84(6):1164-7. doi: 10.1103/PhysRevLett.84.1164.

We propose composite solitons carrying topological charge: multicomponent two dimensional [ (2+1)D] vector (Manakov-like) solitons for which at least one component carries topological charge. These multimode solitons can have a single hump or exhibit a multihump structure. The "spin"...

Showing 1 to 12 of 677 entries