Tip-enhanced ablation and ionization mass spectrometry for nanoscale chemical analysis.

abstract：:Focal adjustment and zooming are universal features of cameras and advanced optical systems. Such tuning is usually performed longitudinally along the optical axis by mechanical or electrical control of focal length. However, the recent advent of ultrathin planar lenses based on metasurfaces (metalenses), which opens ...

journal_title：Science advances

authors： She A,Zhang S,Shian S,Clarke DR,Capasso F

更新日期：2018-02-23 00:00:00

abstract：:Sodium/potassium-transporting adenosine triphosphatase (Na+/K+-ATPase) is one of the most abundant cell membrane proteins and is essential for eukaryotes. Endogenous negative regulators have long been postulated to play an important role in regulating the activity and stability of Na+/K+-ATPase, but characterization o...

journal_title：Science advances

authors： Chin AC,Gao Z,Riley AM,Furkert D,Wittwer C,Dutta A,Rojas T,Semenza ER,Felder RA,Pluznick JL,Jessen HJ,Fiedler D,Potter BVL,Snyder SH,Fu C

更新日期：2020-10-28 00:00:00

abstract：:Grippers are widely used for the gripping, manipulation, and assembly of objects with a wide range of scales, shapes, and quantities in research, industry, and our daily lives. A simple yet universal solution is very challenging. Here, we manage to address this challenge utilizing a simple shape memory polymer (SMP) b...

journal_title：Science advances

authors： Linghu C,Zhang S,Wang C,Yu K,Li C,Zeng Y,Zhu H,Jin X,You Z,Song J

更新日期：2020-02-14 00:00:00

abstract：:Engineering the thermal conductivity of amorphous materials is highly essential for the thermal management of future electronic devices. Here, we demonstrate the impact of ultrafine nanostructuring on the thermal conductivity reduction of amorphous silicon nitride (a-Si3N4) thin films, in which the thermal transport i...

journal_title：Science advances

authors： Tambo N,Liao Y,Zhou C,Ashley EM,Takahashi K,Nealey PF,Naito Y,Shiomi J

更新日期：2020-09-25 00:00:00

abstract：:LmrA is a bacterial ATP-binding cassette (ABC) multidrug exporter that uses metabolic energy to transport ions, cytotoxic drugs, and lipids. Voltage clamping in a Port-a-Patch was used to monitor electrical currents associated with the transport of monovalent cationic HEPES+ by single-LmrA transporters and ensembles o...

journal_title：Science advances

authors： Agboh K,Lau CHF,Khoo YSK,Singh H,Raturi S,Nair AV,Howard J,Chiapello M,Feret R,Deery MJ,Murakami S,van Veen HW

更新日期：2018-09-19 00:00:00

abstract：:In vitro selection of antibodies from large repertoires of immunoglobulin (Ig) combining sites using combinatorial libraries is a powerful tool, with great potential for generating in vivo scavengers for toxins. However, addition of a maturation function is necessary to enable these selected antibodies to more closely...

journal_title：Science advances

authors： Smirnov IV,Golovin AV,Chatziefthimiou SD,Stepanova AV,Peng Y,Zolotareva OI,Belogurov AA Jr,Kurkova IN,Ponomarenko NA,Wilmanns M,Blackburn GM,Gabibov AG,Lerner RA

更新日期：2016-10-19 00:00:00

abstract：:Recent research on piezoelectric materials is predominantly devoted to enhancing the piezoelectric coefficient, but overlooks its sign, largely because almost all of them exhibit positive longitudinal piezoelectricity. The only experimentally known exception is ferroelectric polymer poly(vinylidene fluoride) and its c...

journal_title：Science advances

authors： You L,Zhang Y,Zhou S,Chaturvedi A,Morris SA,Liu F,Chang L,Ichinose D,Funakubo H,Hu W,Wu T,Liu Z,Dong S,Wang J

更新日期：2019-04-19 00:00:00

abstract：:B cell activation is regulated by the stimulatory or inhibitory co-receptors of B cell receptors (BCRs). Here, we investigated the signaling mechanism of Fc receptor-like 1 (FcRL1), a newly identified BCR co-receptor. FcRL1 was passively recruited into B cell immunological synapses upon BCR engagement in the absence o...

journal_title：Science advances

authors： Zhao X,Xie H,Zhao M,Ahsan A,Li X,Wang F,Yi J,Yang Z,Wu C,Raman I,Li QZ,Kim TJ,Liu W

更新日期：2019-07-17 00:00:00

abstract：:Polyphosphate, an energy-rich polymer conserved in all kingdoms of life, is integral to many cellular stress responses, including nutrient deprivation, and yet, the mechanisms that underlie its biological roles are not well understood. In this work, we elucidate the physiological function of this polymer in the acclim...

journal_title：Science advances

authors： Sanz-Luque E,Saroussi S,Huang W,Akkawi N,Grossman AR

更新日期：2020-09-30 00:00:00

abstract：:Climatic conditions shift gradually over millennia, altering the rates at which carbon (C) is fixed from the atmosphere and stored in the soil. However, legacy impacts of past climates on current soil C stocks are poorly understood. We used data from more than 5000 terrestrial sites from three global and regional data...

journal_title：Science advances

authors： Delgado-Baquerizo M,Eldridge DJ,Maestre FT,Karunaratne SB,Trivedi P,Reich PB,Singh BK

更新日期：2017-04-12 00:00:00

abstract：:For natural microswimmers, the interplay of swimming activity and external flow can promote robust directed motion, for example, propulsion against (upstream rheotaxis) or perpendicular to the direction of flow. These effects are generally attributed to their complex body shapes and flagellar beat patterns. Using cata...

journal_title：Science advances

authors： Katuri J,Uspal WE,Simmchen J,Miguel-López A,Sánchez S

更新日期：2018-01-26 00:00:00

abstract：:Soft robotics may enable many new technologies in which humans and robots physically interact, yet the necessary high-performance soft actuators still do not exist. The optimal soft actuators need to be fast and forceful and have programmable shape changes. Furthermore, they should be energy efficient for untethered a...

journal_title：Science advances

authors： Davidson ZS,Shahsavan H,Aghakhani A,Guo Y,Hines L,Xia Y,Yang S,Sitti M

更新日期：2019-11-22 00:00:00

abstract：:By introducing a superconducting gap in Weyl or Dirac semimetals, the superconducting state inherits the nontrivial topology of their electronic structure. As a result, Weyl superconductors are expected to host exotic phenomena, such as nonzero-momentum pairing due to their chiral node structure, or zero-energy Majora...

journal_title：Science advances

authors： Bachmann MD,Nair N,Flicker F,Ilan R,Meng T,Ghimire NJ,Bauer ED,Ronning F,Analytis JG,Moll PJW

更新日期：2017-05-24 00:00:00

abstract：:Membrane proteins must balance the sequence constraints associated with folding and function against the hydrophobicity required for solvation within the bilayer. We recently found the expression and maturation of rhodopsin are limited by the hydrophobicity of its seventh transmembrane domain (TM7), which contains pol...

journal_title：Science advances

authors： Penn WD,McKee AG,Kuntz CP,Woods H,Nash V,Gruenhagen TC,Roushar FJ,Chandak M,Hemmerich C,Rusch DB,Meiler J,Schlebach JP

更新日期：2020-03-04 00:00:00

abstract：:The impact of the FMR1 premutation on human health is the subject of considerable controversy. A fundamental unanswered question is whether carrying the premutation allele is directly correlated with clinical phenotypes. A challenging problem in past genotype-phenotype studies of the FMR1 premutation is ascertainment ...

journal_title：Science advances

authors： Movaghar A,Page D,Brilliant M,Baker MW,Greenberg J,Hong J,DaWalt LS,Saha K,Kuusisto F,Stewart R,Berry-Kravis E,Mailick MR

更新日期：2019-08-21 00:00:00

abstract：:Peripheral blood mononuclear cells (PBMCs) may provide insight into the pathogenesis of Alzheimer's disease (AD) or Parkinson's disease (PD). We investigated PBMC samples from 132 well-characterized research participants using seven canonical immune stimulants, mass cytometric identification of 35 PBMC subsets, and si...

journal_title：Science advances

authors： Phongpreecha T,Fernandez R,Mrdjen D,Culos A,Gajera CR,Wawro AM,Stanley N,Gaudilliere B,Poston KL,Aghaeepour N,Montine TJ

更新日期：2020-11-25 00:00:00

abstract：:Modern tropical forests harbor an enormous diversity of squamates, but fossilization in such environments is uncommon and little is known about tropical lizard assemblages of the Mesozoic. We report the oldest lizard assemblage preserved in amber, providing insight into the poorly preserved but potentially diverse mid...

journal_title：Science advances

authors： Daza JD,Stanley EL,Wagner P,Bauer AM,Grimaldi DA

更新日期：2016-03-04 00:00:00

abstract：:Unraveling the genetic and epigenetic determinants of phenotypes is critical for understanding and re-engineering biology and would benefit from improved methods to separate cells based on phenotypes. Here, we report SPOTlight, a versatile high-throughput technique to isolate individual yeast or human cells with uniqu...

journal_title：Science advances

authors： Lee J,Liu Z,Suzuki PH,Ahrens JF,Lai S,Lu X,Guan S,St-Pierre F

更新日期：2020-10-23 00:00:00

abstract：:Holoprosencephaly (HPE) is a congenital forebrain defect often associated with embryonic lethality and lifelong disabilities. Currently, therapeutic and diagnostic options are limited by lack of knowledge of potential disease-causing mutations. We have identified a new mutation in the PRDM15 gene (C844Y) associated wi...

journal_title：Science advances

authors： Mzoughi S,Di Tullio F,Low DHP,Motofeanu CM,Ong SLM,Wollmann H,Wun CM,Kruszka P,Muenke M,Hildebrandt F,Dunn NR,Messerschmidt DM,Guccione E

更新日期：2020-01-10 00:00:00

abstract：:Here, an integrated cascade nanozyme with a formulation of Pt@PCN222-Mn is developed to eliminate excessive reactive oxygen species (ROS). This nanozyme mimics superoxide dismutase by incorporation of a Mn-[5,10,15,20-tetrakis(4-carboxyphenyl)porphyrinato]-based metal-organic framework compound capable of transforming...

journal_title：Science advances

authors： Liu Y,Cheng Y,Zhang H,Zhou M,Yu Y,Lin S,Jiang B,Zhao X,Miao L,Wei CW,Liu Q,Lin YW,Du Y,Butch CJ,Wei H

更新日期：2020-07-17 00:00:00

abstract：:A major challenge in modern physics is to accurately describe strongly interacting quantum many-body systems. One-dimensional systems provide fundamental insights because they are often amenable to exact methods. However, no exact solution is known for the experimentally relevant case of external confinement. We propo...

journal_title：Science advances

authors： Levinsen J,Massignan P,Bruun GM,Parish MM

更新日期：2015-07-24 00:00:00

abstract：:Starvation is probably the most common stressful situation in nature. In vertebrates, elevation of the biogenic amine norepinephrine levels is common during starvation. However, the precise role of norepinephrine in nutrient deprivation remains largely unknown. We report that in the free-living nematode Caenorhabditis...

journal_title：Science advances

authors： Tao J,Ma YC,Yang ZS,Zou CG,Zhang KQ

更新日期：2016-05-06 00:00:00

abstract：:Self-propelling micromotors are emerging as a promising micro- and nanoscale tool for single-cell analysis. We have recently shown that the field gradients necessary to manipulate matter via dielectrophoresis can be induced at the surface of a polarizable active ("self-propelling") metallodielectric Janus particle (JP...

journal_title：Science advances

authors： Wu Y,Fu A,Yossifon G

更新日期：2020-01-29 00:00:00

abstract：:Energy band engineering is of fundamental importance in nanoelectronics. Compared to chemical approaches such as doping and surface functionalization, electrical and optical methods provide greater flexibility that enables continuous, reversible, and in situ band tuning on electronic devices of various kinds. In this ...

journal_title：Science advances

authors： Wu E,Xie Y,Zhang J,Zhang H,Hu X,Liu J,Zhou C,Zhang D

更新日期：2019-05-03 00:00:00

abstract：:Changes in extreme weather, such as tropical cyclones, are one of the most serious ways society experiences the impact of climate change. Advance forecasted conditional attribution statements, using a numerical model, were made about the anthropogenic climate change influence on an individual tropical cyclone, Hurrica...

journal_title：Science advances

authors： Reed KA,Stansfield AM,Wehner MF,Zarzycki CM

更新日期：2020-01-01 00:00:00

abstract：:While the ecological impacts of fishing the waters beyond national jurisdiction (the "high seas") have been widely studied, the economic rationale is more difficult to ascertain because of scarce data on the costs and revenues of the fleets that fish there. Newly compiled satellite data and machine learning now allow ...

journal_title：Science advances

authors： Sala E,Mayorga J,Costello C,Kroodsma D,Palomares MLD,Pauly D,Sumaila UR,Zeller D

更新日期：2018-06-06 00:00:00

abstract：:Understanding the remarkable excitonic effects and controlling the exciton binding energies in two-dimensional (2D) semiconductors are crucial in unlocking their full potential for use in future photonic and optoelectronic devices. Here, we demonstrate large excitonic effects and gate-tunable exciton binding energies ...

journal_title：Science advances

authors： Qiu Z,Trushin M,Fang H,Verzhbitskiy I,Gao S,Laksono E,Yang M,Lyu P,Li J,Su J,Telychko M,Watanabe K,Taniguchi T,Wu J,Neto AHC,Yang L,Eda G,Adam S,Lu J

更新日期：2019-07-19 00:00:00

abstract：:NSF (N-ethylmaleimide-sensitive factor) and α-SNAP (α-soluble NSF attachment protein) bind to the SNARE (soluble NSF attachment protein receptor) complex, the minimum machinery to mediate membrane fusion, to form a 20S complex, which disassembles the SNARE complex for reuse. We report the cryo-EM structures of the α-S...

journal_title：Science advances

authors： Huang X,Sun S,Wang X,Fan F,Zhou Q,Lu S,Cao Y,Wang QW,Dong MQ,Yao J,Sui SF

更新日期：2019-04-10 00:00:00

abstract：:Ice-templating holds promise to become a powerful technique to construct high-performance bioinspired materials. Both ice nucleation and growth during the freezing process are crucial for the final architecture of the ice-templated material. However, effective ways to control these two very important factors are still...

journal_title：Science advances

authors： Zhao N,Li M,Gong H,Bai H

更新日期：2020-07-31 00:00:00

abstract：:Carbon deposits are well-known inhibitors of transition metal catalysts. In contrast to this undesirable behavior, here we show that epitaxial graphene grown on Ru(0001) promotes the reversible formation of a C-C bond between -CH2CN and 7,7,8,8-tetracyano-p-quinodimethane (TCNQ). The catalytic role of graphene is mult...

journal_title：Science advances

authors： Navarro JJ,Pisarra M,Nieto-Ortega B,Villalva J,Ayani CG,Díaz C,Calleja F,Miranda R,Martín F,Pérez EM,Vázquez de Parga AL

更新日期：2018-12-14 00:00:00