This document discusses a method for selectively functionalizing gold-nickel nanorods fabricated using on-wire lithography (OWL). It proposes protecting portions of the nanorods from etching using self-assembled monolayers (SAMs) of mercaptohexanol (MHA), then selectively removing unprotected segments through wet etching. Optimized etchant parameters and etching times are determined using UV-Vis spectroscopy to monitor the process. Energy dispersive X-ray spectroscopy (EDS) analysis is used to confirm the presence of iron oxide nanoparticles selectively deposited on etched regions as a demonstration of the technique. Future work aims to optimize biomolecule coupling and selectively functionalize nanorods with DNA.
Optical and Dielectric Studies on Semiorganic Nonlinear Optical Crystal by So...ijrap
The field of nonlinear optics became practically a reality after the invention of laser. High performance electro-optic switching elements for telecommunication and optical information processing are based on materials with high nonlinear optical (NLO) properties. Single crystals of nonlinear optical material Llysine sulphate (LLS) are grown by slow evaporation technique. The crystal structure and lattice parameters are determined for the grown crystal by single X-ray diffraction studies. The wide transparency range of the crystals in the visible region of the electromagnetic spectrum is identified by the UV-Vis-NIR technique. The mechanical property of the grown crystal is determined by Vicker’s microhardness test. It is observed from the microhardness studies of the grown crystals that the hardness increases with increase in load. Meyer’s index n is calculated which proves that the material belongs to soft material category. The dielectric constant and dielectric loss are calculated by varying the frequencies at room temperature. The emission of green light on passing the Nd: YAG laser confirms the second harmonic generation (SHG) property of the crystals .The SHG efficiency of the crystals are found to be better than that of Potassium Di hydrogen Phosphate (KDP)
Optical and Dielectric Studies on Semiorganic Nonlinear Optical Crystal by So...ijrap
The field of nonlinear optics became practically a reality after the invention of laser. High performance electro-optic switching elements for telecommunication and optical information processing are based on materials with high nonlinear optical (NLO) properties. Single crystals of nonlinear optical material Llysine sulphate (LLS) are grown by slow evaporation technique. The crystal structure and lattice parameters are determined for the grown crystal by single X-ray diffraction studies. The wide transparency range of the crystals in the visible region of the electromagnetic spectrum is identified by the UV-Vis-NIR technique. The mechanical property of the grown crystal is determined by Vicker’s microhardness test. It is observed from the microhardness studies of the grown crystals that the hardness increases with increase in load. Meyer’s index n is calculated which proves that the material belongs to soft material category. The dielectric constant and dielectric loss are calculated by varying the frequencies at room temperature. The emission of green light on passing the Nd: YAG laser confirms the second harmonic generation (SHG) property of the crystals .The SHG efficiency of the crystals are found to be better than that of Potassium Di hydrogen Phosphate (KDP)
La gestión de los datos personales constituye uno de las más grande fuentes de poder y briqueza. El conocimiento disponible abre inmensas posibilidades también para el sector turístico, porque en esta batalla de la información también se decide la calidad de la experiencia turística para empresas y destinos turísticos.
La gestión de los datos personales constituye uno de las más grande fuentes de poder y briqueza. El conocimiento disponible abre inmensas posibilidades también para el sector turístico, porque en esta batalla de la información también se decide la calidad de la experiencia turística para empresas y destinos turísticos.
Guía de vídeomarketing para destinos turísticos - Tourist InfoInvattur
El Instituto Valenciano de Estudios Turísticos (Invat•tur) y la Agència Valenciana del Turisme editan la “Guía de vídeo marketing on line Red Tourist Info de la Comunitat Valenciana”, que persigue servir como documento base en la estrategia de comunicación y promoción a través del video en redes sociales de los destinos turísticos de la Comunitat Valenciana.
Más información: http://invattur.gva.es
Guía de geomarketing para destinos turísticos - Tourist InfoInvattur
El Instituto Valenciano de Estudios Turísticos (Invat•tur) y la Agència Valenciana del Turisme editan la “Guía de Geolocalización online de la Red Tourist Info de la
Comunitat Valenciana”, para ayudar a optimizar la referenciación geográfica on line de todas las oficinas de la Red Tourist Info en los mapas y canales sociales de Internet.
Más inforamción: http://invattur.gva.es
Strain effect in the crystal structure causes enhanced catalytic effect which is very beneficial for different process. In this Presentation it is discussed how the strain is generated and what is its effect.
This presentation describes the production of silver nanowires with different processes, comparing the polyol process and their applications in different fields.
NAMRC 2016_build height effect on the inconel 718 parts fabricated by selecti...Xiaoqing Wang
Full Paper:
X. Wang, T. Keya, K. Chou, Build Height Effect on the Inconel 718 Parts Fabricated by Selective Laser Melting, Procedia Manuf. 5 (2016) 1006–1017. doi:10.1016/j.promfg.2016.08.089.
Available at:
https://www.academia.edu/29967061/Build_Height_Effect_on_the_Inconel_718_Parts_Fabricated_by_Selective_Laser_Melting
The public trial lecture presented by Mohammadreza Nematollahi on 8th of October 2014 at Norwegian University of Science and Technology. The theoretical models and the experimental progress of highly mismatched alloys, as well as their optoelectronic applications are covered.
1. Selective Functionalization of OWL
Nanostrutures Using Simple Wet-Etchant
Techniques
William A. Gallopp, Skidmore College
Matthew J. Rycenga, Chemisty
Chad A. Mirkin, Chemistry
Northwestern University
2. Outline
• Motivation and strategy of selective functionalization
• Fabrication of nanorods (On Wire Lithography)
• Optimized etchant parameters
• Energy Dispersive Spectroscopy analysis of
selectively functionalized rods
3. What is Selective Functionalization?
The ability to control the molecular coverage
of a nanoparticle surface.
4. Selective Functionalization is Critical to
Nanotechnology
P. Muhlschlegel, et al. Science, 2005, 308, 1607Y. Xia, et al. Adv. Mater., 2008, 308, 1607
5. Etching Sonication
1. Dissolve Template
(NaOH )
Electrochemical Synthesis
Au or Ag
Ni
Au/Ti or SiO2
2. Disperse rods on Glass
Slides
Deposit Backing
(SiO2, metals)
Mirkin and coworkers, Science
On-Wire Lithography (OWL)
6. (Alumina Membrane)
HNO3
NaOH
Ag Evaporation
Ag Electrodeposition
Rinse
New Plating Sol’n
Reference electrode
Counter electrode
Working electrode
Rinse
New Plating Sol’n
Nanorod Fabrication
7. Length: 380 nm Au segment: 100 nm and 200 nm
Diameter: 55 nm Ni segment : 80 nm
8. Scale bars = 300 nm (top)
100 nm (bottom)
Nano Lett. 2007, 7, 3849
Currently No Control Over Functionalization
9. Proposed Strategy for Selective Functionalization
= Streptavidin-FeO3NPs (d = 10 nm)
HS O
O
O
O
O
O
N
H
O
S
NH
HN
O
Biotin thiol
MHA (Hydroxy thiol)
