The influence of the dispersion method on the electrical properties of vapor-grown carbon nanofiber/epoxy compositesNanoscale Research Letters - Tập 6 - Trang 1-5 - 2011
Paulo Cardoso, Jaime Silva, Donald Klosterman, José A Covas, Ferrie WJ van Hattum, Ricardo Simoes, Senentxu Lanceros-Mendez
The influence of the dispersion of vapor-grown carbon nanofibers (VGCNF) on the electrical properties of VGCNF/Epoxy composites has been studied. A homogenous dispersion of the VGCNF does not imply better electrical properties. In fact, it is demonstrated that the most simple of the tested dispersion methods results in higher conductivity, since the presence of well-distributed nanofiber clusters ...... hiện toàn bộ
Study of the omnidirectional photonic bandgap for dielectric mirrors based on porous silicon: effect of optical and physical thicknessNanoscale Research Letters - Tập 7 - Trang 1-6 - 2012
Augusto David Ariza-Flores, Luis Manuel Gaggero-Sager, Vivechana Agarwal
We report the theoretical comparison of the omnidirectional photonic bandgap (OPBG) of one-dimensional dielectric photonic structures, using three different refractive index profiles: sinusoidal, Gaussian, and Bragg. For different values of physical thickness (PT) and optical thickness (OT), the tunability of the OPBG of each profile is shown to depend on the maximum/minimum refractive indices. Wi...... hiện toàn bộ
Size-Dependent Materials Properties Toward a Universal EquationNanoscale Research Letters - Tập 5 - Trang 1132-1136 - 2010
G Guisbiers
Due to the lack of experimental values concerning some material properties at the nanoscale, it is interesting to evaluate this theoretically. Through a “top–down” approach, a universal equation is developed here which is particularly helpful when experiments are difficult to lead on a specific material property. It only requires the knowledge of the surface area to volume ratio of the nanomateria...... hiện toàn bộ
Grain size-dependent magnetic and electric properties in nanosized YMnO3 multiferroic ceramicsNanoscale Research Letters - Tập 6 Số 1
T. C. Han, Wei‐Yen Hsu, Wei-Da Lee
AbstractMagnetic and electric properties are investigated for the nanosized YMnO3 samples with different grain sizes (25 nm to 200 nm) synthesized by a modified Pechini method. It shows that magnetic and electric properties are strongly dependent on the grain size. The magnetic characterization indicates that with increasing grain size, the ant...... hiện toàn bộ
Study of nanostructure growth with nanoscale apex induced by femtosecond laser irradiation at megahertz repetition rateNanoscale Research Letters - Tập 8 Số 1 - Trang 1-12 - 2013
Patel, Nikunj B, Tan, Bo, Venkatakrishnan, Krishnan
Leaf-like nanostructures with nanoscale apex are induced on dielectric target surfaces by high-repetition-rate femtosecond laser irradiation in ambient conditions. We have recently developed this unique technique to grow leaf-like nanostructures with such interesting geometry without the use of any catalyst. It was found to be possible only in the presence of background nitrogen gas flow. In this ...... hiện toàn bộ
Facile Synthesis of Monodisperse CdS Nanocrystals via MicroreactionNanoscale Research Letters - Tập 5 - Trang 130-137 - 2009
Zhen Wan, Hongwei Yang, Weiling Luan, Shan-tung Tu, Xinggui Zhou
CdS-based nanocrystals (NCs) have attracted extensive interest due to their potential application as key luminescent materials for blue and white LEDs. In this research, the continuous synthesis of monodisperse CdS NCs was demonstrated utilizing a capillary microreactor. The enhanced heat and mass transfer in the microreactor was useful to reduce the reaction temperature and residence time to synt...... hiện toàn bộ
Ultra-Sensitivity Glucose Sensor Based on Field EmittersNanoscale Research Letters - Tập 4 Số 10 - 2009
Huibiao Liu, Xuemin Qian, Shu Wang, Yuliang Li, Song Ye, Daoben Zhu
Abstract
A new glucose sensor based on field emitter of ZnO nanorod arrays (ZNA) was fabricated. This new type of ZNA field emitter-based sensor shows high sensitivity with experimental limit of detection of 1 nM glucose solution and a detection range from 1 nM to 50 μM in air at room temperature, which is lower than that of glucose sensors based on surfa...... hiện toàn bộ