Results 211 to 220 of about 1,165,166 (303)

Ion Concentration and Voltage Imaging With Fluorescent Nanodiamonds

Advanced Materials, EarlyView.
We demonstrate reversible switching between the fluorescent NV0 and the dark NV+ state, in sub‐30 nm FNDs via surface oxidation and hydrogenation, respectively. In an electrochemical cell, we show that the fluorescence from hydrogenated particles enables all‐optical imaging of voltages and ion concentrations at the micrometer scale.
Patrick Voorhoeve, Alessandro Mameli, Hiroshi Abe, Takeshi Ohshima, Qiang Sun, Anita Quigley, Rob Kapsa, Nikolai Dontschuk, Philipp Reineck   +8 more
wiley   +1 more source

Engineering Properties of GeSi Alloy Quantum Dots by High-Temperature Annealing. [PDF]

Nanomaterials (Basel)
Luo W, Yin Y, Huang Q, Yang J, Zhan Y, Liu Z, Jiang Z, Zheng C, Zhong Z.   +8 more
europepmc   +1 more source

Moiré‐Induced Symmetry Breaking of Charge Order in van der Waals Heterostructures

Advanced Materials, EarlyView.
A uniaxial moiré potential in misfit (MS)1+δTaS2 heterostructures selectively reshape charge order: the embedded 1H‐TaS2 layer hosts an incommensurate charge‐density wave, fragmented into nanometer domains and stripped of threefold symmetry. Superconductivity, however, remains uniform and fully gapped, revealing heterosymmetry stacking as a selective ...
Sandra Sajan, Laura Pätzold, Tarushi Agarwal, Clara Pfister, Haojie Guo, Sisheng Duan, P. V. Sruthibhai, Mariana Rossi, Maria N. Gastiasoro, Sara Barja, Ravi P. Singh, Tim Wehling, Miguel M. Ugeda   +12 more
wiley   +1 more source

Steric Effect-Controlled Atomic Passivation of Colloidal InAs Quantum Dots for Infrared Photodetectors. [PDF]

Small
Lee IS, Cho G, Ahn Y, Yang M, Jeong S, Jee S, Jung Y, Kim HS, Baek SW.   +8 more
europepmc   +1 more source

2D Abrupt Nano‐Junctions Blending sp–sp2 Bonds on Atomically Precise Heterostructures

Advanced Materials, EarlyView.
A lateral heterostructure between atomically precise sp–sp2$^2$ metalated graphdiyne and sp2$^2$ graphene nanoribbons is realized by on‐surface synthesis and investigated by STM and DFT. The impact of on‐surface synthesis byproducts on covalent junction formation yield is unveiled.
Alice Cartoceti, Simona Achilli, Masoumeh Alihosseini, Adriana E. Candia, Enrico Beltrami, Paolo D'Agosta, Alessio Orbelli Biroli, Francesco Sedona, Andrea Li Bassi, Jorge Lobo‐Checa, Carlo S. Casari   +10 more
wiley   +1 more source

Quantifying the Electrical Excitation Level of Quantum Dots for Mitigating Electroluminescent Efficiency Roll-Off. [PDF]

Adv Mater
Cai Q, He Y, Zhu M, Lou Z, Ma Z, Fan C, Si J, He H, Ye Z, Dai X.   +9 more
europepmc   +1 more source

Side‐Chain‐Induced Interlayer Slipping in Metalloporphyrin COFs Enables Microenvironment and Spin‐State Regulation for Photocatalytic CO2 Reduction

Advanced Materials, EarlyView.
Alkoxy chain length drives a continuous transition from eclipsed AA to a serrated, slipped AA* configuration over Co‐porphyrin COFs. A moderate slip both contracts the pore channel to enrich CO2 and suppress hydrogen evolution, and enhances collective high‐spin of Co sites, which delivers a record CO production rate with high selectivity.
Jie He, Qingxuan Chen, Minxian Zhang, Wenhao Zhao, Aoni Xu, Jinqiang Zhang, Hongqi Sun, Shaobin Wang, Xiaoguang Duan   +8 more
wiley   +1 more source

Precursor Coordination Engineering Enables Epitaxial-Level Carrier Densities in HgTe Colloidal Quantum Dots. [PDF]

Adv Mater
Hu Z, Liu J, Qin Y, Long Y, Ye L, Lin N, Di Y, Han M, Zhou G, Ba K, Chen Y, Wang X, Guo T, Chu J, Wang J.   +14 more
europepmc   +1 more source

Polar Wurtzite NbAlN: A Transition‐Metal Nitride Alloy for Polarization‐Engineered GaN Heterostructures

Advanced Materials, EarlyView.
A novel polar wurtzite alloy, NbAlN, is demonstrated as a transition‐metal‐containing polar barrier for GaN heterostructures. Nb atoms form coherent nanoscale enrichment within the wurtzite lattice without disrupting metal polarity. This study demonstrates that transition metals can be integrated into polar nitrides to enable polarization‐related ...
Atsushi Kobayashi, Souta Kurogi, Tomoya Okuda, Riku Kikuchi, Yusuke Wakamoto, Kouei Kubota, Hikaru Sasaki, Kazuhisa Ikeda, Kanako Shojiki, Takahiro Kawamura, Toru Akiyama, Takehito Seki, Takuya Maeda   +12 more
wiley   +1 more source

Strongly Confined Bismuth Antimonide Quantum Dots. [PDF]

ACS Mater Au
Khadka M, Subedi R, Zhou Q, Lu X, Agyei-Mensah JA, José-Yacamán M, Lang G, Herth E, Guisbiers G.   +8 more
europepmc   +1 more source