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Showing 1 to 12 of 234 entries
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Anisotropic de Gennes Narrowing in Confined Fluids.

Physical review letters

Nygård K, Buitenhuis J, Kagias M, Jefimovs K, Zontone F, Chushkin Y.
PMID: 27152823
Phys Rev Lett. 2016 Apr 22;116(16):167801. doi: 10.1103/PhysRevLett.116.167801. Epub 2016 Apr 21.

The collective diffusion of dense fluids in spatial confinement is studied by combining high-energy (21 keV) x-ray photon correlation spectroscopy and small-angle x-ray scattering from colloid-filled microfluidic channels. We find the structural relaxation in confinement to be slower compared...

Exponential protection of zero modes in Majorana islands.

Nature

Albrecht SM, Higginbotham AP, Madsen M, Kuemmeth F, Jespersen TS, Nygård J, Krogstrup P, Marcus CM.
PMID: 26961654
Nature. 2016 Mar 10;531(7593):206-9. doi: 10.1038/nature17162.

Majorana zero modes are quasiparticle excitations in condensed matter systems that have been proposed as building blocks of fault-tolerant quantum computers. They are expected to exhibit non-Abelian particle statistics, in contrast to the usual statistics of fermions and bosons,...

Facing Asymmetry: Nordic Intellectuals and Center-Periphery Dynamics in European Cultural Space.

Journal of the history of ideas

Nygård S, Strang J.
PMID: 27763373
J Hist Ideas. 2016;77(1):75-97. doi: 10.1353/jhi.2016.0006.

This article addresses the role of asymmetry in the interaction between intellectual fields in Europe in the late nineteenth and early twentieth centuries. By focusing on the spatial and temporal hierarchies implicit in the ways intellectuals from the Nordic...

Projected treatment capacity needs in sierra leone.

PLoS currents

White RA, MacDonald E, de Blasio BF, Nygård K, Vold L, Røttingen JA.
PMID: 25685632
PLoS Curr. 2015 Jan 30;7. doi: 10.1371/currents.outbreaks.3c3477556808e44cf41d2511b21dc29f.

BACKGROUND: The ongoing outbreak of Ebola Virus Disease in West Africa requires immediate and sustained input from the international community in order to curb transmission. The CDC has produced a model that indicates that to end the outbreak by...

Growth of InAs Wurtzite Nanocrosses from Hexagonal and Cubic Basis.

Nano letters

Krizek F, Kanne T, Razmadze D, Johnson E, Nygård J, Marcus CM, Krogstrup P.
PMID: 28895746
Nano Lett. 2017 Oct 11;17(10):6090-6096. doi: 10.1021/acs.nanolett.7b02604. Epub 2017 Sep 22.

Epitaxially connected nanowires allow for the design of electron transport experiments and applications beyond the standard two terminal device geometries. In this Letter, we present growth methods of three distinct types of wurtzite structured InAs nanocrosses via the vapor-liquid-solid...

Giant fluctuations and gate control of the g-factor in InAs nanowire quantum dots.

Nano letters

Csonka S, Hofstetter L, Freitag F, Oberholzer S, Schönenberger C, Jespersen TS, Aagesen M, Nygård J.
PMID: 18937519
Nano Lett. 2008 Nov;8(11):3932-5. doi: 10.1021/nl802418w. Epub 2008 Oct 21.

We study the g-factor of discrete electron states in InAs nanowire based quantum dots. The g values are determined from the magnetic field splitting of the zero bias anomaly due to the spin 1/2 Kondo effect. Unlike to previous...

Colloidal monolayer trapped near a charged wall: a synchrotron x-ray diffraction study.

Physical review letters

Satapathy DK, Bunk O, Jefimovs K, Nygård K, Guo H, Diaz A, Perret E, Pfeiffer F, David C, Wegdam GH, van der Veen JF.
PMID: 18851466
Phys Rev Lett. 2008 Sep 26;101(13):136103. doi: 10.1103/PhysRevLett.101.136103. Epub 2008 Sep 24.

Using x-ray diffraction from microfluidic channel arrays, we have determined concentration profiles of charge-stabilized silica colloids (radius 60+/-2 nm) confined between two like-charged dielectric walls at a few hundred nanometer distance. In solutions of very low ionic strength, strongly...

Junctions in axial III-V heterostructure nanowires obtained via an interchange of group III elements.

Nano letters

Krogstrup P, Yamasaki J, Sørensen CB, Johnson E, Wagner JB, Pennington R, Aagesen M, Tanaka N, Nygård J.
PMID: 19842690
Nano Lett. 2009 Nov;9(11):3689-93. doi: 10.1021/nl901348d.

We present an investigation of the morphology and composition of novel types of axial nanowire heterostructures where Ga(x)In(1-x)As is used as barrier material in InAs nanowires. Using aberration-corrected scanning transmission electron microscopy and energy dispersive X-ray analysis we demonstrate...

Influence of the oxide layer for growth of self-assisted InAs nanowires on Si(111).

Nanoscale research letters

Madsen MH, Aagesen M, Krogstrup P, Sørensen C, Nygård J.
PMID: 21880130
Nanoscale Res Lett. 2011 Aug 31;6:516. doi: 10.1186/1556-276X-6-516.

The growth of self-assisted InAs nanowires (NWs) by molecular beam epitaxy (MBE) on Si(111) is studied for different growth parameters and substrate preparations. The thickness of the oxide layer present on the Si(111) surface is observed to play a...

Three-dimensional multiple-order twinning of self-catalyzed GaAs nanowires on Si substrates.

Nano letters

Uccelli E, Arbiol J, Magen C, Krogstrup P, Russo-Averchi E, Heiss M, Mugny G, Morier-Genoud F, Nygård J, Morante JR, Fontcuberta I Morral A.
PMID: 21823613
Nano Lett. 2011 Sep 14;11(9):3827-32. doi: 10.1021/nl201902w. Epub 2011 Aug 11.

In this paper we introduce a new paradigm for nanowire growth that explains the unwanted appearance of parasitic nonvertical nanowires. With a crystal structure polarization analysis of the initial stages of GaAs nanowire growth on Si substrates, we demonstrate...

Beam-induced damage on diffractive hard X-ray optics.

Journal of synchrotron radiation

Nygård K, Gorelick S, Vila-Comamala J, Färm E, Bergamaschi A, Cervellino A, Gozzo F, Patterson BD, Ritala M, David C.
PMID: 20975225
J Synchrotron Radiat. 2010 Nov;17(6):786-90. doi: 10.1107/S0909049510028487. Epub 2010 Sep 02.

The issue of beam-induced damage on diffractive hard X-ray optics is addressed. For this purpose a systematic study on the radiation damage induced by a high-power X-ray beam is carried out in both ambient and inert atmospheres. Diffraction gratings...

The complexity in the implementation process of empowerment-based chronic kidney care: a case study.

BMC nursing

Nygårdh A, Malm D, Wikby K, Ahlström G.
PMID: 25104917
BMC Nurs. 2014 Jul 30;13:22. doi: 10.1186/1472-6955-13-22. eCollection 2014.

BACKGROUND: This study is part of an interactive improvement intervention aimed to facilitate empowerment-based chronic kidney care using data from persons with CKD and their family members. There are many challenges to implementing empowerment-based care, and it is therefore...

Showing 1 to 12 of 234 entries