controllable growth offlowerlike zno nanostructures by combining laser direct
controllable growth offlowerlike zno nanostructures by combining laser direct
... flowerlike ZnO nanos- tructures by combining laser direct writing and hydrothermal growth method. The control of the as-fabricated ZnO flowerlike structures can be achieved by altering hydrothermal growth ... Controllable growth of flowerlike ZnO nanostructures by combining laser direct writing and hydrothermal synthesis X.D. Guo a,b, ⁎ , ... apor-transport proc...
Ngày tải lên: 06/05/2014, 13:22
controllable synthesis of zno architectures by a surfactant-free hydrothermal process
... to top by four amine precursors by a s urfactant-free hydrothermal process. It suggests t hat dif- ferent amine precursors play an important role in controlling of ZnO structures possibly by tuning ... preferentially grows along the [0001] direction. The wurtzite structure of tower was further confirmed by the SAED pattern. Flowerlike ZnO bundles radially assembled by well-defined...
Ngày tải lên: 06/05/2014, 13:22
beam propagation modeling of modified volume fresnel zone plates fabricated by femtosecond laser direct writing
... theory. Light diffraction by a FZP can be explicitly calculated by the Rayleigh–Sommerfeld (RS) diffraction integral. Therefore, FZP diffraction by the Hankel BPM can be verified by comparing it to the ... can only be fabri- cated with small diffraction efficiency. The VFZP can be fabricated by femtosecond laser direct writing. This con- cept was experimentally demonstrated with a...
Ngày tải lên: 06/05/2014, 08:53
volume fresnel zone plates fabricated by femtosecond laser direct writing
... sample was irradiated by 90 fs pulses delivered by a Ti:sapphire amplified laser system at a central wave- length of 800 nm and 1 kHz repetition rate. The laser beam was attenuated by a polarizer before ... of direct laser fabrication of Fresnel zone plates inside fused silica have been reported for both amplitude- type zone plates 5 by utilizing scattering damage and phase-typ...
Ngày tải lên: 06/05/2014, 09:02
Temperature-Controlled Growth of Silicon-Based Nanostructures by Thermal Evaporation of SiO Powders
... Si wire is well-crystallized and has a growth direction close to 〈112〉, which is different from the 〈111〉 growth direction of the Si whiskers prepared by the metal-catalyzed VLS reaction. 7-10 From ... produced by this technique is comparable to those produced by traditional VLS 7-10 and laser ablation. 11-15 In thermal evaporation, oxides were found to play a dominant role in...
Ngày tải lên: 16/03/2014, 15:30
one-dimensional zno nanostructures solution growth and
... agent-assisted growth Capping agents can be included in the solution to modify the growth habits of the ZnO nanostructures [154]. Commonly used capping agents for hydro- thermal growth of ZnO nanostructures ... showed that the ZnO is a single crystal with the oriented growth direction along the [0001] direction. A growth mechanism was proposed based on the linkage/i...
Ngày tải lên: 06/05/2014, 13:26
Báo cáo khoa học: "Deep Syntactic Processing by Combining Shallow Methods" ppt
... Deep Syntactic Processing by Combining Shallow Methods P ´ eter Dienes and Amit Dubey Department of Computational Linguistics Saarland ... many types of EEs, we generalize Collins’ approach by enriching the anno- tation of non-terminals with the type of the EE in question (eg. WH–NP) by using different gap+ fea- tures ( gap+WH-NP ; ... to 98% if PSEUDOs are excluded. Most of the remai...
Ngày tải lên: 08/03/2014, 04:22
Báo cáo khoa học: "Improved Lexical Alignment by Combining Multiple Reified Alignments" potx
... Improved Lexical Alignment by Combining Multiple Reified Alignments Dan Tufiú Institute for Artificial Intelligence 13, “13 ... idea has been exploited by various NLP researchers in language model- ling, statistical POS tagging, parsing, etc. We developed two quite different word align- ers, driven by two distinct objectives: ... estimate different parameters of the MEBA aligner....
Ngày tải lên: 08/03/2014, 21:20
Báo cáo "The effect of Cu concentration in soil and phosphorous fertilizer on plant growth and Cu uptake by Brassia juncea L. grown on contaminated soils " doc
... applications on plant growth and Cu uptake by Brassica juncea L. Mature plants were harvested for the Cu accumulation analysis. The soil samples from each growing pot were extracted by HNO 3 0.43N ... has strong effects on Brassica juncea L. growth and the uptake rate of Cu by the plants. The height and the biomass of plants were reduced dramatically by 36% and 53% respectiv...
Ngày tải lên: 14/03/2014, 15:20
Growth of silicon nanostructures on graphite
... Tel.: +1-808-956-8941; nanostructures, synthesized Si nanocrystals by fax: +1-808-956-7107. E-mail addresses: paul.scheier@uibk.ac.at (P. Scheier), laser ablation and by thermal evaporation in ... combination of armchair and tions on the growth of Si nanostructures on HOPG zigzag directions in the 2D-graphite hexagonal as follows. The average silicon coverage varies by network yi...
Ngày tải lên: 16/03/2014, 15:34