Results 31 to 40 of about 151,125 (267)

Self-Seeded MOCVD Growth and Dramatically Enhanced Photoluminescence of InGaAs/InP Core–Shell Nanowires

Nanoscale Research Letters, 2018
We report on the growth and characterization of InGaAs/InP core–shell nanowires on Si–(111) substrates by metal-organic chemical vapor deposition (MOCVD).
Xianghai Ji, Xiren Chen, Xiaoguang Yang, Xingwang Zhang, Jun Shao, Tao Yang   +5 more
doaj   +1 more source

Atomic Identification of Interfaces in Individual Core@shell Quantum Dots

Advanced Science, 2021
CdSe@CdS Core@shell quantum dots (QDs) have been widely studied in recent years, due to their architecture which allows to tailor properties by controlling structure and composition.
Guiju Liu, Wenshuang Liang, Xuyan Xue, Federico Rosei, Yiqian Wang   +4 more
doaj   +1 more source

Exploring the Enhancement of Exchange Bias in Innovative Core/Shell/Shell Structures: Synthesis and Magnetic Properties of Co-Oxide/Co and Co-Oxide/Co/Co-Oxide Inverted Nanostructures

Nanomaterials, 2023
In this study, we investigate the enhancement of exchange bias in core/shell/shell structures by synthesizing single inverted core/shell (Co-oxide/Co) and core/shell/shell (Co-oxide/Co/Co-oxide) nanostructures through a two-step reduction and oxidation ...
Maral Ghoshani, Morteza Mozaffari, Mehmet Acet, Mahshid Hosseini, Daryoosh Vashaee   +4 more
doaj   +1 more source

Preventing the Galvanic Replacement Reaction toward Unconventional Bimetallic Core–Shell Nanostructures

Molecules, 2023
A bimetallic core–shell nanostructure is a versatile platform for achieving intriguing optical and catalytic properties. For a long time, this core–shell nanostructure has been limited to ones with noble metal cores.
Kai Liu, Zhun Qiao, Chuanbo Gao
doaj   +1 more source

TO THE PROBLEM OF STABILITY/INSTABILITY OF BIMETALLIC STRUCTURES Co (CORE)/ Au (SHELL) AND Au (CORE)/ Co (SHELL): ATOMISTIC SIMULATION

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2019
In this work, we performed atomistic modeling of the behavior of Co (core) – Au (shell) and Au (core) – Co (shell) during thermal exposure in order to study the stability/instability problem for the above nanostructures using the tight binding potential ...
N.Yu. Sdobnyakov, V.M. Samsonov, A.Yu. Kolosov, S.A. Vasilyev, V.S. Myasnichenko, D.N. Sokolov, K.G. Savina, A.D. Veselov   +7 more
doaj   +1 more source

Sequential Growth of Uniform β-NaYF4@β-NaLnF4 (Ln = Y, Lu, Yb) Microcrystals with Luminescent Properties of Multicolor Tuning and Dual-Mode Emission

Nanomaterials, 2017
We synthesized the uniform core-shell microstructured compounds with hexagonal phase NaYF4:Er/Yb microrods as the core and hexagonal phase NaLnF4 (NaYbF4, NaLuF4:Yb/Tm, NaYF4:Yb/Er, NaYF4:Eu) as the shell based on the hydrothermal reaction.
Dandan Ju, Feng Song, Yingdong Han, Wenjing Cui, Aihua Zhou, Shujing Liu, Xueqin Wang, Ming Feng, Chengguo Ming   +8 more
doaj   +1 more source

Core–Shell Particles: From Fabrication Methods to Diverse Manipulation Techniques

Micromachines, 2023
Core–shell particles are micro- or nanoparticles with solid, liquid, or gas cores encapsulated by protective solid shells. The unique composition of core and shell materials imparts smart properties on the particles.
Ajeet Singh Yadav, Du Tuan Tran, Adrian J. T. Teo, Yuchen Dai, Fariba Malekpour Galogahi, Chin Hong Ooi, Nam-Trung Nguyen   +6 more
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

Core–Shell WS2@WTe2/MoTe2 Nanotubes

Small Structures
WTe2 and MoTe2 are materials with a layered structure (2D materials) belonging to the transition metal dichalcogenide family of compounds. Their topological 1T′ polytype has not been fabricated and studied in a 1D nanotubular structure, so far.
Vojtech Kundrat, Lothar Houben, Jakub Zalesak, David Holec, Iddo Pinkas, Reshef Tenne   +5 more
doaj   +1 more source