3D photonic bandgap materials fabricated self assembled colloidal microspheres as the template

... afford 3D PCs with a full PBG, it is still far away from practical applications because of the main two issues associated with self- assembled 3D PBG materials One is the domain size of a self- assembled ... formation (A) The thickness of the carbon layer is the same as the diameter of the spheres (B) The thickness of the carbon layer is less than the diamete...

Ngày tải lên: 16/09/2015, 08:29

... FABRICATION OF 3D PHOTONIC CRYSTALS WITH SELF- ASSEMBLED COLLOIDAL SPHERES AS THE TEMPLATE WANG LIKUI (PhD, NUS) DEPARTMENT OF CHEMICAL AND BIOMOLECULAR ENGINEERING NATIONAL UNIVERSITY OF SINGAPORE ... The TEOS amounts used in the synthesis of seeds and the final beads and the sizes of them Table 4.2 The sizes and the monodispersities of the PS...

Ngày tải lên: 11/09/2015, 09:01

... control of the thiols in the binary mixture solution of SH- and CH3-terminated silanes Nanoscale Res Lett (2009) 4:1319–1323 Conclusions We have introduced a method to control the average spacing between ... between aligned OMCVD-grown Au NPs by varying the volume% of SH-terminated silane in a binary mixture of SH- and CH3-terminated groups CH...

Ngày tải lên: 22/06/2014, 00:20

... and Physics 113 (2009) 389–394 391 Fig FE-SEM images of the ZnO 3D nanostructures synthesized at different pH: (a) pH 9.0; (b) pH 9.5; (c) pH 10.0; (d) pH 10.5; (e) pH 11.0; (f) pH 11.5; (g) pH ... Room-temperature photoluminescence spectra from the ZnO 3D nanostructures grown in solutions of different pH ( ex = 266 nm) quality of self-assembled ZnO...

Ngày tải lên: 06/05/2014, 13:24

... Conclusions In conclusion, we have studied a novel type of strain-free GaAs quantum dots which are fabricated by filling of selfassembled nanoholes generated by local droplet etching Using appropriate process ... of 7.6 nm [25] Finally, the QDs were capped by a 120-nm-thick Al0.35Ga0.65 As barrier Types of GaAs Quantum Dots Fig a Top view AFM image of an AlGaAs su...

Ngày tải lên: 21/06/2014, 17:20

... the structural properties over a wide range by adjusting the materials and the process parameters Self-assembled quantum dots are created by filling of nanoholes in AlGaAs with GaAs Dependent ... publications A first functionalization of the nanoholes, the fabrication of a novel type of very uniform, strain-free GaAs QDs by filling of LDE nanoholes in AlGaAs with GaA...

Ngày tải lên: 22/06/2014, 00:20

... urea and ammonia play important roles in the formation of 3D flower-like hierarchical b-Ni(OH)2 hollow architectures By calcining the as-prepared flower-like b-Ni(OH)2 hollow architectures, hierarchical ... concerning the synthesis of Ni(OH)2 and NiO hollow architectures and their interesting properties For example, Wang’s group synthesized hollow architectures...

Ngày tải lên: 22/06/2014, 01:20

... Terminator 3” movie Nanotechnology Language Yow! •Nanobio •Nanodots •Nanowires •Nanoelectronics •Nanobots •Nanomaterials •Nanochondria Figure 1.4: Searching for nanotechnology Definition “Nanotechnology ... • Mandal, Deendayal; Bolander, Mark E.; Mukhopadhyay, Debrabrata; Sarkar, Gobinda; • Mukherjee, Priyabrata (2006, January) The use of Microorganisms for the formation of metal nanoparticle...

Ngày tải lên: 15/03/2014, 23:51

... [10±13] and thermal evaporation [14±17] are two methods normally used for the synthesis of SiNWs The key point in these two methods is the formation of a sucient amount of silicon atoms and/ or silicon ... made of a Si core and a SiO2 sheath The one-dimensional growth of SiNWs is facilitated by the SiO2 sheath that con®nes the lateral growth of SiNWs, and the...

Ngày tải lên: 16/03/2014, 15:06

... separation of 5–20 mm with GaN powders, only some SiOx bundles were grown, while not well-aligned 2D arrays Hence, the relative placement of Si Fig SEM images of 2D close-packed arrays of SiOx nanowire ... consequently leading to a dense growth and self- assembly of SiOx nanowires Conclusions In summary, novel 2D ordered arrays self- assembled by SiOx...

Ngày tải lên: 16/03/2014, 15:11

... sharp diffraction peaks (Fig 1a) are observed, indicative of high-degree crystallinity On the other hand, the as-synthesized h- WO3 with the NH4 + -based EDTA sample showed broader peaks with ... urchin-like (NH4 + -based EDTA) and (c) JCPDS card # 3 3-1 387, hydrothermally synthesized at 180 ◦ C for h solutions are shown in Fig For the as-synthesized h- WO3 with Na+ -based EDTA...

Ngày tải lên: 19/03/2014, 16:48

... equation The scalar wave theory of photonic band structure did not agree well with experiment For example, it predicted photonic band gaps in the dielectric-sphere structure of Plate I, whereas none ... band structure that is best described as semimetallic The empirical search for a photonic band gap led nowhere until we tested the structure shown in Plate II This is the spheric...

Ngày tải lên: 01/04/2014, 00:33

... Numata S Shinkai · M Steinhart · T Yamamoto 123 The series Advances in Polymer Science presents critical reviews of the present and future trends in polymer and biopolymer science including chemistry, ... supplementary information Papers are accepted for Advances in Polymer Science in English In references Advances in Polymer Science is abbreviated Adv Polym Sci and...

Ngày tải lên: 04/06/2014, 15:04

... considering the optical and electrical interactions in assemblies formed of metal nanoparticles, thus introducing some of the fundamental properties behind the function of above mentioned devices Metallic ... introduces the basis for the optical properties of both single nanoparticles and interacting particle clusters The optical spectrum of silver nanoparticles and nanopar...

Ngày tải lên: 04/06/2014, 15:05

... Raman enhancement of rhodamine adsorbed on Ag nanoparticles self-assembled into nanowire-like arrays Marianthi Panagopoulou1, Nikolaos Pantiskos1, Panos ... discussion Randomly distributed Ag nanoparticles Randomly distributed Ag nanoparticles were studied as a function of deposition time, in order to obtain the optimum evaporation condition, concerning ... AFM...

Ngày tải lên: 18/06/2014, 22:20