"Lens" effect in directed assembly of nanowires on gradient molecular patterns.
نویسندگان
چکیده
We report a new phenomenon, named here as the "lens" effect, in the directed-assembly process of nanowires (NWs) on self-assembled monolayer (SAM) patterns. In this process, the adsorption of NWs is focused in the nanoscale regions at the center of microscale SAM patterns with gradient surface molecular density just like an optical lens focuses light. As a proof of concepts, we successfully demonstrated the massive assembly of V2O5 NWs and single-walled carbon nanotubes (swCNTs) with a nanoscale resolution using only microscale molecular patterning methods. This work provides us with important insights about the directed-assembly process, and from a practical point of view, it allows us to generate nanoscale patterns of NWs over a large area for mass fabrication of NW-based devices.
منابع مشابه
Macroscopic highly aligned DNA nanowires created by controlled evaporative self-assembly.
By subjecting DNA aqueous solution to evaporate in a curve-on-flat geometry that was composed of either a spherical lens or a cylindrical lens situated on a flat substrate, a set of highly aligned DNA nanowires in the forms of spokes and parallel stripes over a macroscopic area (i.e., millimeter scale) were successfully created. The DNA molecules were stretched and aligned on polymer-coated sub...
متن کاملمطالعه اثر پوشانندگی سطح بر خواص مکانیکی و اپتیکی نانوسیمهای اکسید روی
In this work, on the basis of density functional theory and the generalized gradient approximation (GGA) we optimized the electronic structure of the unsaturated and hydrogen saturated ZnO nanowires with [0001] orientation. Studying the effects of a uniaxial strain on the nanowires, we calculated the Young’s modulus and the effective piezoelectric coefficient of the nanowires. Furthermore, the...
متن کاملInterface structure governed by plastic and structural dissimilarity in perovskite La0.7Sr0.3MnO3 nanodots on rock-salt MgO substrates
Related Articles In situ study of self-assembled GaN nanowires nucleation on Si(111) by plasma-assisted molecular beam epitaxy Appl. Phys. Lett. 100, 212107 (2012) A master-equation approach to simulate kinetic traps during directed self-assembly J. Chem. Phys. 136, 184109 (2012) Physics of shell assembly: Line tension, hole implosion, and closure catastrophe J. Chem. Phys. 136, 184507 (2012) E...
متن کاملEngineering Nano-aggregates: β-Cyclodextrin Facilitates the Thiol-Gold Nanoparticle Self-Assembly
The structure and morphology of nonmaterial formed by colloidal synthesis represent a subject of interest as it is a factor deciding the physicochemical properties and biological applications of nanostructures. Among various nanoparticles, gold can develop fractal assembled patterns. Herein, we report a nano-aggregate of a thiol-on-gold self-assembled structure and the influence of β-cyclodextr...
متن کاملPreparation and Characterization of Tin Oxide Nanowires
The aim of this research is preparation of SnO2 nanowires by means of Thermal chemical reaction vapor transport deposition (TCRVTD) method from SnO powders. The morphology, chemical composition and microstructure properties of the nanowires are characterized using field emission scanning electron microscope (FE-SEM), EDS, and XRD. The XRD diffraction patterns reveal that the SnO2 nanowires have...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- The journal of physical chemistry. B
دوره 110 21 شماره
صفحات -
تاریخ انتشار 2006