Results 121 to 130 of about 327,024 (264)

Nonlinear reversal of photoexcitation on the attosecond time scale improves ultrafast X-ray diffraction images. [PDF]

Nat Commun
Ulmer A, Ho PJ, Langbehn B, Kuschel S, Hecht L, Obaid R, Dold S, Driver T, Duris J, Lin MF, Cesar D, Franz P, Guo Z, Hart PA, Kamalov A, Larsen KA, Li X, Meyer M, Nakahara K, Radloff RG, Robles R, Rönnebeck L, Sudar N, Summers AM, Young L, Walter P, Cryan JP, Bostedt C, Rupp D, Marinelli A, Gorkhover T.   +30 more
europepmc   +1 more source

Operando Tracking of Oxygen‐Vacancy Dynamics and Negative Capacitance in Ca‐Doped BiFeO3

Advanced Functional Materials, EarlyView.
Operando electrochemical impedance spectroscopy, combined with electrocoloration, enables a direct correlation between real‐space ionic redistribution and the corresponding frequency‐domain electrical response. In lateral Ca‐doped BiFeO3 devices, time‐resolved impedance snapshots capture the evolution from bulk‐dominated mixed conduction to an ...
Jeonghun Suh, Heung‐Sik Park, Jong‐Sook Lee, Chan‐Ho Yang   +3 more
wiley   +1 more source

Tracking Thermal Transport in Colloidal Quantum Dot Films Using in Situ Time-Resolved X-ray Diffraction. [PDF]

Nano Lett
Wieman E, Nagelj N, Curling E, Chen L, Yu J, Alivisatos AP, Lindenberg AM, Diroll BT, Olshansky JH, Ma J, Guzelturk B, Cotts BL.   +11 more
europepmc   +1 more source

Noise‐Limited Bit Precision in Ferroelectric Synaptic Transistors for High‐Resolution Neuromorphic Computing

Advanced Functional Materials, EarlyView.
Low‐frequency noise spectroscopy defines the resolvable conductance states of synaptic FeFETs by coupling read‐current fluctuation with usable dynamic range. The resulting noise‐limited bit precision establishes a universal, device‐agnostic reliability metric beyond the memory window, enabling quantitative benchmarking and rational design of high ...
Jaehong Park, Yeonseop Shin, Changhyeon Han, Sangwoo Kim, Eunchan Park, Youngchan Cho, Jaehong Min, Hyunjun Ahn, Jaekyoung Park, Cheol‐Woong Yang, Jangsaeng Kim, Daewoong Kwon, Wonjun Shin   +12 more
wiley   +1 more source

Resonant X-Ray Diffraction of Conjugated Polymers at the Selenium K-Edge. [PDF]

Macromol Rapid Commun
Freychet G, Kirby N, Gebert M, Kim YH, He Q, Heeney M, McNeill CR.   +6 more
europepmc   +1 more source

Electrostatic Superlattices Beyond 1:1 Stoichiometry

Advanced Functional Materials, EarlyView.
Polymer‐mediated charge regulation drives two hierarchical routes to higher‐stoichiometry nanoparticle superlattices. Tuning the polymer's molecular weight promotes progressive interstitial filling, transforming ZnS into the fully occupied CaF2${\rm CaF}_2$ lattice. Exchanging polymer assignment between large and small nanoparticles instead breaks CsCl
Binay P. Nayak, Prapti Kakkar, Wesley P. Korba, Honghu Zhang, Wenjie Wang, Surya K. Mallapragada, Alex Travesset, David Vaknin   +7 more
wiley   +1 more source

Sulfur‐Free Ultrahigh‐Refractive‐Index Polymers Enabled by Densely Packed Oxygen‐Bridged Dibenzofuran‐Cardo Architectures

Advanced Functional Materials, EarlyView.
A new class of sulfur‐free, oxygen‐bridged dibenzofuran‐based polymers is developed for ultrahigh‐refractive‐index applications. The rigid π‐extended architecture and enhanced molecular polarizability enable exceptional optical performance, combining refractive indices up to 1.848 with high Abbe numbers and full visible transparency. This work offers a
Hend A. Hegazy, Gyeongsoo Kim, Sooyoung Lee, Mohamed R. Elmasry, Youn‐Chul Kim, Changsik Song   +5 more
wiley   +1 more source

Spatiotemporal mapping of anisotropic thermal transport in GaN thin films via ultrafast X-ray diffraction. [PDF]

Nat Commun
Nguyen T, Fu C, Cheng M, Li B, Espedal TE, Chen Z, Qiao K, Neeraj K, Chotrattanapituk A, Cordova Carrizales D, Rha E, Liu T, Kajale SN, Sarkar D, Walko DA, Wen H, Boriskina SV, Kim J, Li M.   +18 more
europepmc   +1 more source

Spatially Regulated Lithium Plating via Li2O‐Rich Interphase Enables Durable Fast‐Charging Hybrid Lithium Batteries

Advanced Functional Materials, EarlyView.
A Li2O‐rich solid electrolyte interphase (SEI) is engineered on graphite through a propylene carbonate‐based electrolyte to spatially regulate Li plating. The homogeneous interphase lowers Li nucleation barriers, promotes conformal Li deposition around graphite particles, and suppresses dendritic accumulation, enabling durable hybrid Li‐ion/Li‐metal ...
Robert Kuphal, Jingjing Liu, Junxiang Liu, Tao Ma, Yi Ding, Mahmood Haq, Satish Udpa, Stephen J. Harris, Chengcheng Fang   +8 more
wiley   +1 more source

Gas-controlled capillary spinner for time-resolved powder X-ray diffraction under dynamic conditions. [PDF]

J Appl Crystallogr
Kawaguchi S, Takemoto M, Kobayashi S, Kubota Y.   +3 more
europepmc   +1 more source