ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMelting Point Depression and Kinetic Effects of Cooling on Crystallization in Poly(vinylidene fluoride)-Poly(methyl methacrylate) MixturesT. Nishi T. WangCite this: Macromolecules 1975, 8, 6, 909–915Publication Date (Print):November 1, 1975Publication History Published online1 May 2002Published inissue 1 November 1975https://pubs.acs.org/doi/10.1021/ma60048a040https://doi.org/10.1021/ma60048a040research-articleACS PublicationsRequest reuse...

We report nanoscale mechanical heterogeneity of a metallic glass characterized by dynamic force microscopy. Apparent energy dissipation with variation ~12%, originating from nonuniform distribution local viscoelasticity, was observed. The correlation length the measured to be ~2.5 nm, consistent dimension shear transformation zones for plastic flow. This study provides first experimental evidence on viscoelastic in glasses and may fill gap between atomic models macroscopic properties.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermally Induced Phase Separation Behavior of Compatible Polymer MixturesT. Nishi, T. Wang, and K. KweiCite this: Macromolecules 1975, 8, 2, 227–234Publication Date (Print):March 1, 1975Publication History Published online1 May 2002Published inissue 1 March 1975https://pubs.acs.org/doi/10.1021/ma60044a025https://doi.org/10.1021/ma60044a025research-articleACS PublicationsRequest reuse permissionsArticle Views2332Altmetric-Citations325LEARN ABOUT...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Study of Compatible Polymer MixturesT. K. Kwei, T. Nishi, and R. F. RobertsCite this: Macromolecules 1974, 7, 5, 667–674Publication Date (Print):September 1, 1974Publication History Published online1 May 2002Published inissue 1 September 1974https://pubs.acs.org/doi/10.1021/ma60041a023https://doi.org/10.1021/ma60041a023research-articleACS PublicationsRequest reuse permissionsArticle Views681Altmetric-Citations252LEARN ABOUT THESE METRICSArticle...

This Perspective summarizes the recent advances and perspective in three-dimensional (3D) imaging techniques their applications to polymer nanostructures, e.g., microphase-separated structures of block copolymers. We place particular emphasis on method transmission electron microtomography (TEMT). As a result some developments TEMT, it is now possible obtain truly quantitative 3D images nanostructures with subnanometer resolution. The introduction scanning optics TEMT has made large volumes...

There is a possibility that the phase separation process coupled with other ordering processes such as crystallization. New types of behavior during crystallization in polymer blends diagram are presented probably for first time. Two different nonequilibrium phenomena take place simultaneously and new structures dynamics pattern formation observed result competition between these two phenomena.

In this study, we obtained dielectric elastomer composites with controllable and actuated properties by using a biomimetic method. We used dopamine (DA) to simultaneously coat the graphene oxide (GO) partially reduce GO self-polymerization of DA on GO. The poly(dopamine) (PDA) coated (GO-PDA) was assembled around rubber latex particles hydrogen bonding interaction between carboxyl groups carboxylated nitrile (XNBR) imino or phenolic hydroxyl GO-PDA during compounding, forming segregated...

Macroscopic supramolecular assembly is a promising method for manufacturing macroscopic, ordered structures tissue-engineering scaffolds. A flexible spacing coating shown to overcome undesired surface and size effects enable of macroscopic cubes with host/guest groups. The assembled pairs disassembled upon introduction competitive guest molecules, thereby demonstrating multivalent mechanism.

A dielectric elastomer actuator with excellent electromechanical performance was fabricated by incorporating modified barium titanate into slide-ring materials necklace-like molecular structure.

The glass transition temperature at the surface of polymer film is studied by coarse-grained molecular dynamics simulation. By analysis segmental motion, temperatures region and that in bulk are determined separately. found to be lower than region. weight dependence obtained simulation agrees well with scanning force microscopic measurements.

Local phase separation at the growth front of a spherulite has been found during crystallization in polymer mixture poly(\ensuremath{\epsilon}-caprolactone) and polystyrene. The phenomenon can be qualitatively explained by coupling between preferential rejection impurities (polystyrene) existence diagram. This unusual clearly shows that there is an impurity-rich layer on spherulite. A nonlinear shape instability have also this system. They are discussed basis formation growing interface. We...

Adsorption of Ga on the hydrogen terminated Si(100)–2×1–H surface has been investigated by scanning tunneling microscopy (STM). We have found that thermally deposited atoms preferentially adsorb hydrogen-missing dangling bonds and impurities. desorb STM current fabricate atomic-scale dangling-bond wires, in similar way as was reported Lyding et al. [Appl. Phys. Lett. 64 (1994) 2010]. In order to more detailed bond structures, several methods manipulating (detaching, attaching moving)...

Digital image analysis (DIA) is applied to extract various types of physical information from an high-order structures in polymer systems observed under optical microscope. DIA can be analyze the pattern formation phenomena general. Various numerical operations real and wave-number space make it possible unobtainable by other methods, such as use light scattering. The possibility valuable are presented with examples. technique itself useful not only but also fields studies liquid crystals,...

The electronic structure of [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) was studied using ultraviolet photoelectron spectroscopy vapor and thin film inverse photoemission film. threshold ionization energy PCBM found to be 7.17±0.04 eV in gas phase 5.96±0.02 solid phase. electron affinity 3.9±0.1 These values are 0.4−0.6 smaller than C60. density functional theory calculations gave consistent results with these trends suggested that the donation from side chain C60 backbone raised...

High-speed and high-definition in situ Raman imaging was used to investigate the local state-of-charge (SOC) distribution a LiCoO2 cathode during charge/discharge cycling. The SOC varied significantly as function of location on electrode surface processes broadened after This change is caused by an increase electronic resistance between particles. technique enabled observation Li+ transport

A novel dielectric composite with high constant (<italic>k</italic>), low loss, elastic modulus and large actuated strain at a electric field was prepared by simple, low-cost efficient method.

Abstract Polymer crystals are characterized by strong anisotropy of binding forces among units, i.e., the intrachain force constant f is much larger than interchain g . The anisotropic lattice reduced to an isotropic one, in which each point represents N * units (segment) along chain axis [ = 2( / ) 1/2 ]. Vibrational modes correspond original lattice, whose frequencies governed potential. Anharmonicity crystalline field assumed be related predominantly with alone. Thermodynamic and...