Nanoscale chemical imaging by photoinduced force microscopy.

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：:Detecting associations between genomic changes and phenotypic differences is fundamental to understanding how phenotypes evolved. By systematically screening for parallel amino acid substitutions, we detected known as well as novel cases (Strc, Tecta, and Cabp2) of parallelism between echolocating bats and toothed wha...

journal_title：Science advances

authors： Lee JH,Lewis KM,Moural TW,Kirilenko B,Borgonovo B,Prange G,Koessl M,Huggenberger S,Kang C,Hiller M

更新日期：2018-09-26 00:00:00

abstract：:Driven by advances in materials and computer science, researchers are attempting to design systems where the computer and material are one and the same entity. Using theoretical and computational modeling, we design a hybrid material system that can autonomously transduce chemical, mechanical, and electrical energy to...

journal_title：Science advances

authors： Fang Y,Yashin VV,Levitan SP,Balazs AC

更新日期：2016-09-02 00:00:00

abstract：:The polar nature of the C═O bond commonly allows it to undergo direct attack by nucleophiles at the electrophilic carbon atom in which ketones and aldehydes act as alkyl carbocation equivalents. In contrast, transformations in which ketones and aldehydes act as alkyl radical equivalents (generated in carbonyl carbon) ...

journal_title：Science advances

authors： Dong J,Wang Z,Wang X,Song H,Liu Y,Wang Q

更新日期：2019-10-11 00:00:00

abstract：:Transplantation with donor corneas is the mainstay for treating corneal blindness, but a severe worldwide shortage necessitates the development of other treatment options. Corneal perforation from infection or inflammation is sealed with cyanoacrylate glue. However, the resulting cytotoxicity requires transplantation....

journal_title：Science advances

authors： McTiernan CD,Simpson FC,Haagdorens M,Samarawickrama C,Hunter D,Buznyk O,Fagerholm P,Ljunggren MK,Lewis P,Pintelon I,Olsen D,Edin E,Groleau M,Allan BD,Griffith M

更新日期：2020-06-17 00:00:00

abstract：:The ongoing conservation treatment program of the Ghent Altarpiece by Hubert and Jan Van Eyck, one of the iconic paintings of the west, has revealed that the designs of the paintings were changed several times, first by the original artists, and then during later restorations. The central motif, The Lamb of God, repre...

journal_title：Science advances

authors： Van der Snickt G,Dooley KA,Sanyova J,Dubois H,Delaney JK,Gifford EM,Legrand S,Laquiere N,Janssens K

更新日期：2020-07-29 00:00:00

abstract：:Band structure theory plays an essential role in exploring physics in both solid-state systems and photonics. Here, we demonstrate a direct experimental measurement of the dynamic band structure in a synthetic space including the frequency axis of light, realized in a ring resonator under near-resonant dynamic modulat...

journal_title：Science advances

authors： Li G,Zheng Y,Dutt A,Yu D,Shan Q,Liu S,Yuan L,Fan S,Chen X

更新日期：2021-01-08 00:00:00

abstract：:Meteorite impact craters are one of the most common geological features in the solar system. An impact event is a near-instantaneous process that releases a huge amount of energy over a very small region on a planetary surface. This results in characteristic changes in the target rocks, from vaporization and melting t...

journal_title：Science advances

authors： Osinski GR,Ferrière L

更新日期：2016-08-05 00:00:00

abstract：:The natural selection and the evolutionary optimization of complex shapes in nature are closely related to their functions. Mechanostabilization of shape of biological structure via morphogenesis has several beautiful examples. With the help of simple mechanics-based modeling and experiments, we show an important caus...

journal_title：Science advances

authors： Tiwary CS,Kishore S,Sarkar S,Mahapatra DR,Ajayan PM,Chattopadhyay K

更新日期：2015-05-15 00:00:00

abstract：:The basic physics of earthquakes is such that strong ground motion cannot be expected from an earthquake unless the earthquake itself is very close or has grown to be very large. We use simple seismological relationships to calculate the minimum time that must elapse before such ground motion can be expected at a dist...

journal_title：Science advances

authors： Minson SE,Meier MA,Baltay AS,Hanks TC,Cochran ES

更新日期：2018-03-21 00:00:00

abstract：:Like most homeostatic systems, adiposity in mammals is defended between upper and lower boundary conditions. While leptin and melanocortin-4 receptor (MC4R) signaling are required for defending energy set point, mechanisms controlling upper and lower homeostatic boundaries are less well understood. In contrast to the ...

journal_title：Science advances

authors： Ghamari-Langroudi M,Cakir I,Lippert RN,Sweeney P,Litt MJ,Ellacott KLJ,Cone RD

更新日期：2018-08-22 00:00:00

abstract：:Super-resolution nanoscopy based on wide-field microscopic imaging provided high efficiency but limited resolution. Here, we demonstrate a general strategy to push its resolution down to ~50 nm, which is close to the range of single molecular localization microscopy, without sacrificing the wide-field imaging advantag...

journal_title：Science advances

authors： Liu C,Liu W,Wang S,Li H,Lv Z,Zhang F,Zhang D,Teng J,Zheng T,Li D,Zhang M,Xu P,Gong Q

更新日期：2020-04-17 00:00:00

abstract：:Cues sent by political elites are known to influence public attitudes and behavior. Polarization in elite rhetoric may hinder effective responses to public health crises, when accurate information and rapid behavioral change can save lives. We examine polarization in cues sent to the public by current members of the U...

journal_title：Science advances

authors： Green J,Edgerton J,Naftel D,Shoub K,Cranmer SJ

更新日期：2020-07-10 00:00:00

abstract：:Fluid catalytic cracking (FCC) particles account for 40 to 45% of worldwide gasoline production. The hierarchical complex particle pore structure allows access of long-chain feedstock molecules into active catalyst domains where they are cracked into smaller, more valuable hydrocarbon products (for example, gasoline)....

journal_title：Science advances

authors： Meirer F,Kalirai S,Morris D,Soparawalla S,Liu Y,Mesu G,Andrews JC,Weckhuysen BM

更新日期：2015-04-03 00:00:00

abstract：:Conjugated polymer-polyelectrolyte blends combine and couple electronic semiconductor functionality with selective ionic transport, making them attractive as the active material in organic biosensors and bioelectronics, electrochromic displays, neuromorphic computing, and energy conversion and storage. Although extens...

journal_title：Science advances

authors： Tybrandt K,Zozoulenko IV,Berggren M

更新日期：2017-12-15 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：:We examine the low-temperature states supported by the quasiperiodic host-guest structure of elemental bismuth at high pressure, Bi-III. Our electronic transport and magnetization experiments establish Bi-III as a rare example of type II superconductivity in an element, with a record upper critical field of ~ 2.5 T, u...

journal_title：Science advances

authors： Brown P,Semeniuk K,Wang D,Monserrat B,Pickard CJ,Grosche FM

更新日期：2018-04-13 00:00:00

abstract：:Discovery of new adsorbent materials with a high CO2 working capacity could help reduce CO2 emissions from newly commissioned power plants using precombustion carbon capture. High-throughput computational screening efforts can accelerate the discovery of new adsorbents but sometimes require significant computational r...

journal_title：Science advances

authors： Chung YG,Gómez-Gualdrón DA,Li P,Leperi KT,Deria P,Zhang H,Vermeulen NA,Stoddart JF,You F,Hupp JT,Farha OK,Snurr RQ

更新日期：2016-10-14 00:00:00

abstract：:Many applications in modern technology, such as self-cleaning surfaces and digital microfluidics, require control over individual fluid droplets on flat surfaces. Existing techniques may suffer from side effects resulting from high electric fields and high temperatures. Here, we introduce a markedly different method, ...

journal_title：Science advances

authors： De Jong E,Wang Y,Den Toonder JMJ,Onck PR

更新日期：2019-06-14 00:00:00

abstract：:Adoptive cell transfers have emerged as a disruptive approach to treat disease in a manner that is more specific than using small-molecule drugs; however, unlike traditional drugs, cells are living entities that can alter their function in response to environmental cues. In the present study, we report an engineered p...

journal_title：Science advances

authors： Shields CW 4th,Evans MA,Wang LL,Baugh N,Iyer S,Wu D,Zhao Z,Pusuluri A,Ukidve A,Pan DC,Mitragotri S

更新日期：2020-04-29 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：:The homotrimeric molecular chaperone Skp of Gram-negative bacteria facilitates the transport of outer membrane proteins across the periplasm. It has been unclear how its activity is modulated during its functional cycle. Here, we report an atomic-resolution characterization of the Escherichia coli Skp monomer-trimer t...

journal_title：Science advances

authors： Mas G,Burmann BM,Sharpe T,Claudi B,Bumann D,Hiller S

更新日期：2020-10-21 00:00:00

abstract：:The high-lying vibrational states of the magnesium dimer (Mg2), which has been recognized as an important system in studies of ultracold and collisional phenomena, have eluded experimental characterization for half a century. Until now, only the first 14 vibrational states of Mg2 have been experimentally resolved, alt...

journal_title：Science advances

authors： Yuwono SH,Magoulas I,Piecuch P

更新日期：2020-04-03 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：: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

abstract：:We propose a method to use artificial neural networks to approximate light scattering by multilayer nanoparticles. We find that the network needs to be trained on only a small sampling of the data to approximate the simulation to high precision. Once the neural network is trained, it can simulate such optical processe...

journal_title：Science advances

authors： Peurifoy J,Shen Y,Jing L,Yang Y,Cano-Renteria F,DeLacy BG,Joannopoulos JD,Tegmark M,Soljačić M

更新日期：2018-06-01 00:00:00

abstract：:Mucoadhesive particles (MAP) have been widely explored for pulmonary drug delivery because of their perceived benefits in improving particle residence in the lungs. However, retention of particles adhesively trapped in airway mucus may be limited by physiologic mucus clearance mechanisms. In contrast, particles that a...

journal_title：Science advances

authors： Schneider CS,Xu Q,Boylan NJ,Chisholm J,Tang BC,Schuster BS,Henning A,Ensign LM,Lee E,Adstamongkonkul P,Simons BW,Wang SS,Gong X,Yu T,Boyle MP,Suk JS,Hanes J

更新日期：2017-04-05 00:00:00

abstract：:Intrinsically disordered regions (IDRs) of proteins are implicated in key macromolecular interactions. However, the molecular forces underlying IDR function within multicomponent assemblies remain elusive. By combining thermodynamic and structural data, we have discovered an allostery-based mechanism regulating the so...

journal_title：Science advances

authors： Blus BJ,Koh J,Krolak A,Seo HS,Coutavas E,Blobel G

更新日期：2019-11-27 00:00:00

abstract：:Transplanting beneficial bacteria to the gut microbiome can positively modulate the bacterial composition and remains of great interest in prevention and treatment. However, environmental assaults and rapid transit times in the gastrointestinal (GI) tract result in low oral bioavailability and limited intestinal colon...

journal_title：Science advances

authors： Wang X,Cao Z,Zhang M,Meng L,Ming Z,Liu J

更新日期：2020-06-24 00:00:00

abstract：:Key issues for Na-ion batteries are the development of promising electrode materials with favorable sites for Na+ ion intercalation/deintercalation and an understanding of the reaction mechanisms due to its high activation energy and poor electrochemical reversibility. We first report a layered H0.43Ti0.93Nb1.07O5 as ...

journal_title：Science advances

authors： Park H,Kwon J,Choi H,Song T,Paik U

更新日期：2017-10-06 00:00:00