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1 Deep-subwavelength features of photonic skyrmions in a confined electromagnetic field with orbital angular momentum 2019-04-16             

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Deep-subwavelength features of photonic skyrmions in a confined electromagnetic field with orbital angular momentum

Deep-subwavelength features of photonic skyrmions in a confined electromagnetic field with orbital angular momentum, Published online: 15 April 2019; doi:10.1038/s41567-019-0487-7

Magnetic textures known as skyrmions have gathered much attention in recent years. It is now shown that focused vector beams can also give rise to photonic skyrmion-like structures.

2 Emergence of the geometric phase from quantum measurement back-action 2019-04-16             

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Emergence of the geometric phase from quantum measurement back-action

Emergence of the geometric phase from quantum measurement back-action, Published online: 15 April 2019; doi:10.1038/s41567-019-0482-z

Following a closed evolution in the Hilbert space, the state vector of a quantum system accumulates a geometric phase factor. A series of weak measurements reveal the origin of this in the back-action of any quantum measurement.

3 Large and reversible myosin-dependent forces in rigidity sensing 2019-04-09             

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Large and reversible myosin-dependent forces in rigidity sensing

Large and reversible myosin-dependent forces in rigidity sensing, Published online: 08 April 2019; doi:10.1038/s41567-019-0477-9

High-resolution experiments attribute surprisingly large forces to the molecular motors helping a cell sense its surroundings. A two-state theory interprets the contractile properties of these motors as emergent features of their collective behaviour.

4 Symmetry-enhanced discontinuous phase transition in a two-dimensional quantum magnet 2019-04-09             

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Symmetry-enhanced discontinuous phase transition in a two-dimensional quantum magnet

Symmetry-enhanced discontinuous phase transition in a two-dimensional quantum magnet, Published online: 08 April 2019; doi:10.1038/s41567-019-0484-x

A phase transition often implies symmetry breaking in the system. However, an unconventional first-order phase transition is predicted, where higher-order symmetry than that of the underlying Hamiltonian emerges exactly at the phase boundary.

5 Wound healing coordinates actin architectures to regulate mechanical work 2019-04-09             

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Wound healing coordinates actin architectures to regulate mechanical work

Wound healing coordinates actin architectures to regulate mechanical work, Published online: 08 April 2019; doi:10.1038/s41567-019-0485-9

When a wound heals, different types of branched and bundled actin structure form, each designed to perform a specific function. Experiments and theory now suggest that the actin architecture depends on the stiffness of the cell’s surroundings.

6 Stable coherent terahertz synchrotron radiation from controlled relativistic electron bunches 2019-04-09             

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Stable coherent terahertz synchrotron radiation from controlled relativistic electron bunches

Stable coherent terahertz synchrotron radiation from controlled relativistic electron bunches, Published online: 08 April 2019; doi:10.1038/s41567-019-0488-6

A feedback loop based on chaos control theory permits the generation of stable and coherent terahertz radiation from relativistic electron bunches in synchrotron light sources.

7 Stronger than they look 2019-04-09             

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Stronger than they look

Stronger than they look, Published online: 08 April 2019; doi:10.1038/s41567-019-0492-x

An experimental study of living cells suggests that single myosin molecules are capable of generating unusually large forces. The observation is supported by a theoretical model — and demonstrates the complexity of in vivo force generation.

8 Thirst regulates motivated behavior through modulation of brainwide neural population dynamics 2019-04-05             

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Physiological needs produce motivational drives, such as thirst and hunger, that regulate behaviors essential to survival. Hypothalamic neurons sense these needs and must coordinate relevant brainwide neuronal activity to produce the appropriate behavior. We studied dynamics from ~24,000 neurons in 34 brain regions during thirst-motivated choice behavior, as mice consumed water and became sated. Water-predicting sensory cues elicited activity that rapidly spread throughout the brain of thirsty animals. These dynamics were gated by a brainwide mode of population activity that encoded motivational state. Focal optogenetic activation of hypothalamic thirst-sensing neurons, after satiation, returned global activity to the pre-satiation state. Thus, motivational states specify initial conditions determining how a brainwide dynamical system transforms sensory input into behavioral output.

9 Two-dimensional skyrmion bags in liquid crystals and ferromagnets 2019-04-02             

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Two-dimensional skyrmion bags in liquid crystals and ferromagnets

Two-dimensional skyrmion bags in liquid crystals and ferromagnets, Published online: 01 April 2019; doi:10.1038/s41567-019-0476-x

Structures containing multiple skyrmions inside a larger skyrmion—called skyrmion bags—are experimentally created in liquid crystals and theoretically predicted in magnetic materials. These may have applications in information storage technology.

10 We like to share 2019-04-02             

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We like to share

We like to share, Published online: 01 April 2019; doi:10.1038/s41567-019-0503-y

Nature Physics is one of 23 Springer Nature journals involved in a pilot scheme to make published papers readily available via ResearchGate.

 
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