176 Result(s)
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Article
Single enantiomers from a chiral-alcohol catalyst
Hydrogen bonding acts as a ubiquitous glue to sustain the intricate architecture and functionality of proteins, nucleic acids and many supramolecular assemblies1,2, but this weak interaction is seldom used as a f...
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A hemispherical electronic eye camera based on compressible silicon optoelectronics
The electronic eye camera shown on the cover is a notable advance in optoelectronics. Even with the latest technologies it is difficult to produce a device to match the feats of imaging achieved by the human e...
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Structure of the formate transporter FocA reveals a pentameric aquaporin-like channel
FocA is a representative member of the formate–nitrite transporter family, which transports short-chain acids in bacteria, archaea, fungi, algae and parasites. The structure and transport mechanism of the form...
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Structure of a fucose transporter in an outward-open conformation
MFS (major facilitator superfamily) transporters are an ancient and ubiquitous class of transport protein. After several decades of research, the structures of three MFS transporters were known — LacY and GlpT...
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Extended megadroughts in the southwestern United States during Pleistocene interglacials
Droughts lasting tens of years are known to have occurred in the southwestern United States during the past two millennia, but model simulations suggest that much longer 'megadroughts' might occur in a future,...
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Erratum: Extended megadroughts in the southwestern United States during Pleistocene interglacials
Nature 470, 518–521 (2011) In this Letter, the affiliations for authors Jaime Toney, Julianna Fessenden and Giday WoldeGabriel were listed incorrectly. The correct affiliations for all authors are as shown here.
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Three-dimensional nanonetworks for giant stretchability in dielectrics and conductors
The realization of levels of stretchability that extend beyond intrinsic limits of bulk materials is of great importance to stretchable electronics. Here we report large-area, three-dimensional nano-architectu...
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Open AccessProxy-to-proxy calibration: Increasing the temporal resolution of quantitative climate reconstructions
High-resolution paleoclimate reconstructions are often restricted by the difficulties of sampling geologic archives in great detail and the analytical costs of processing large numbers of samples. Using sedime...
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Open AccessInterplay between the Westerlies and Asian monsoon recorded in Lake Qinghai sediments since 32 ka
Two atmospheric circulation systems, the mid-latitude Westerlies and the Asian summer monsoon (ASM), play key roles in northern-hemisphere climatic changes. However, the variability of the Westerlies in Asia a...
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Open AccessGenome of the Chinese tree shrew
Chinese tree shrews (Tupaia belangeri chinensis) possess many features valuable in animals used as experimental models in biomedical research. Currently, there are numerous attempts to employ tree shrews as model...
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Stretchable batteries with self-similar serpentine interconnects and integrated wireless recharging systems
An important trend in electronics involves the development of materials, mechanical designs and manufacturing strategies that enable the use of unconventional substrates, such as polymer films, metal foils, pa...
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High performance piezoelectric devices based on aligned arrays of nanofibers of poly(vinylidenefluoride-co-trifluoroethylene)
Multifunctional capability, flexible design, rugged lightweight construction and self-powered operation are desired attributes for electronics that directly interface with the human body or with advanced robot...
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Digital cameras with designs inspired by the arthropod eye
Digital cameras with layouts inspired by the compound, hemispherical designs of arthropod eyes have been built by combining elastomeric optical elements with deformable arrays of thin silicon photodetectors.
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Open AccessSize, separation, structural order and mass density of molecules packing in water and ice
The structural symmetry and molecular separation in water and ice remain uncertain. We present herewith a solution to unifying the density, the structure order and symmetry, the size (H-O length dH) and the separ...
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Fractal design concepts for stretchable electronics
Stretchable electronics provide a foundation for applications that exceed the scope of conventional wafer and circuit board technologies due to their unique capacity to integrate with soft materials and curvil...
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3D multifunctional integumentary membranes for spatiotemporal cardiac measurements and stimulation across the entire epicardium
Means for high-density multiparametric physiological map** and stimulation are critically important in both basic and clinical cardiology. Current conformal electronic systems are essentially 2D sheets, whic...
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Asymmetric catalysis with N-heterocyclic carbenes as non-covalent chiral templates
N-heterocyclic carbenes are a class of persistent carbenes stabilized by adjacent heteroatoms that are part of a heterocycle. They play a central role in multiple enzymatic biosynthetic reactions that involve t.....
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Metal-templated chiral Brønsted base organocatalysis
Inert octahedral chiral-at-metal complexes are an emerging class of asymmetric catalysts that exploit the globular, rigid nature and stereochemical options of octahedral compounds. While the central transition...
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Conformable amplified lead zirconate titanate sensors with enhanced piezoelectric response for cutaneous pressure monitoring
The ability to measure subtle changes in arterial pressure using devices mounted on the skin can be valuable for monitoring vital signs in emergency care, detecting the early onset of cardiovascular disease an...
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Open AccessVersatile, kinetically controlled, high precision electrohydrodynamic writing of micro/nanofibers
Direct writing of hierarchical micro/nanofibers have recently gained popularity in flexible/stretchable electronics due to its low cost, simple process and high throughput. A kinetically controlled mechanoelec...
