Particle & Particle Systems Characterization
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Best of Particle - Enjoy Free Access
The Best of Particle compiles a selection of recently published interesting articles dealing with the synthesis, characterization, and application of particles in a variety of systems and devices.
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Recently Published Articles
- Secondary Interactions of Graphene Oxide on Liquid Crystal Formation and Stability
Jun Young Oh, Jisoo Park, Yo Chan Jeong, Jae Ho Kim, Seung Jae Yang and Chong Rae Park
Version of Record online: 24 FEB 2017 | DOI: 10.1002/ppsc.201600383
The influence of secondary interactions is discussed for their role in the self-assembly and stabilization of graphene oxides (GOs). Highly oxidized GOs show self-segregation and orientation behavior, which result in a liquid crystal (LC) phase. The strong hydrogen bonding networks between GOs in water enable the stabilization of GO LC dispersions for a long period.
- Liquid Crystals of Graphene Oxide: A Route Towards Solution-Based Processing and Applications
Jizhen Zhang, Shayan Seyedin, Zhoujie Gu, Nisa Salim, Xungai Wang and Joselito M. Razal
Version of Record online: 23 FEB 2017 | DOI: 10.1002/ppsc.201600396
Recent advancements in synthesis, processing, and applications of graphene oxide liquid crystals are summarized. The challenges and opportunities in effective utilization of graphene oxide liquid crystals for fabrication of various 1D, 2D, and 3D pristine and composite architectures with highly tailored microstructures are discussed. Guidelines are provided for the fabrication of the next-generation graphene-based structures with superior properties suitable for practical applications.
- Dielectrophoretic Condensation and Tailored Phase Separation in Graphene Oxide Liquid Crystals
Seung-Ho Hong, Tian-Zi Shen, Bomi Lee and Jang-Kun Song
Version of Record online: 21 FEB 2017 | DOI: 10.1002/ppsc.201600344
Dielectrophoresis-induced spatial phase separation is demonstrated in graphene oxide (GO) liquid crystal dispersions. The local GO concentration can be arbitrarily controlled within a cell using field-induced local condensation, thereby yielding phase separation between the nematic region and isotropic or biphasic regions. The field-induced nematic phase shows good alignment along the field direction and is wrinkled along the perpendicular direction.
- Silver–Copper Hollow Nanoshells as Phase-Transfer Reagents and Catalysts in the Reduction of 4-Nitroaniline
Limei Chen, Peiguang Hu, Yi Peng, Jia En Lu, Mauricio D. Rojas-Andrade and Shaowei Chen
Version of Record online: 21 FEB 2017 | DOI: 10.1002/ppsc.201600358
Hollow nanoshells consisting of segregated nanocrystalline domains of Ag and CuO are prepared by a facile one-pot reduction process. The nanocavity may be exploited for the encapsulation of target molecules and phase-transfer between water and organic media by deliberate surface functionalization. Furthermore, the nanoshells exhibit apparent catalytic activity toward NaBH4 reduction of 4-nitroaniline to p-phenylenediamine.
- Plasmonic Particles with Unique Optical Interaction and Mechanical Motion Properties
Jiafang Li, Jing Liu, Ximin Tian and Zhi-Yuan Li
Version of Record online: 21 FEB 2017 | DOI: 10.1002/ppsc.201600380
Unique optical interaction and mechanical motion properties of plasmonic particles are reviewed. Efficient fluorescence enhancement of dye molecules and surface plasmon amplification in metal nanoparticles with gain are presented. Strong correlation between elastic Rayleigh scattering and inelastic Raman scattering is introduced in SERS and TERS nanosystems. Surface-plasmon-enhanced optical force and torque of metal particles are reported with non-intrusive optical tweezers.