Papers:
TiO2 Nanoparticles Mixed MEH-PPV Hybrid Absorbing Layer
Conducting polymers/inorganic semiconductor nanoparticles composite are attracting attention due to their tunable optical and electrical properties. The properties of the hybrid layer processed from the blend solution depend on the degree of dispersion of nanoparticles [...]
Organic Solvent Dispersed TiO2 Nanocrystal Sol: Synthesis and Characterization
Rao Y.Q., Antalek B., Minter J., Mourey T., Blanton T., Slater G., Slater L., Slater G., Slater L., Fornalik J., Eastman Kodak Company, US
Anatase TiO2 nanocrystals with a mean diameter of about 10 nm were successfully synthesized through a non-aqueous sol gel route without the use of air free equipments. The nanocrystals were well dispersed in organic solvents [...]
Influence of Al-Doping on the Optical Properties of ZnO films
Al doped ZnO (AZO) thin films were deposited on glass substrates using the radio frequency reactive magnetron sputtering technique. The effect of Al concentration on the microstructure and the luminescence properties of the AZO thin [...]
Environmental Digital Pulsed Force Mode AFM in Biomedical Coatings Research
We report ongoing methodological developments using Digital Pulsed Force Mode AFM of model coatings containing the drug dexamethasone dispersed in polylactide (biodegradable), poly(butylmethacrylate) (PBMA), and PBMA/poly(laurel methacrylate) (PLMA) blends. Studies include (1) multi-technique analyses, understanding [...]
Characterization of Silane Nanoadhesion by means of Dynamic Force Spectroscopy
Ptak A., Makowski M., Niemier M., Cichomski M., Gojzewski H., Czajka R., Poznan University of Technology, PL
Using a modified atomic force microscope the nanoadhesion between a silicon tip and a monolayer of 1H, 1H, 2H, 2H-perfluorodecyl-trichlorosilane was measured at different loading rates. Adhesion force-versus-loading rate curves could be fitted with two [...]
Systematic Quantitative Characterization of Surface Nanostructures
In this paper, a systematic analysis technique is presented and applied to Atomic Force Microscopy (AFM) data. Our technique isolates surface nanostructures and extracts quantitative information such as their shape and size. Examples of features [...]
Scanning Probe Charge Reading of Ferroelectric Polarization with Nanoscale Resolution
Probe storage with epitaxial ferroelectric PbZr0.2Ti0.8O3 (PZT) media [1, 2] is a promising technology for terabyte/inch2 storage devices because nanoscale and nonvolatile polarizations may be reversibly written and read by a scanning probe tip. Piezoresponse [...]
Order Development in Polymer-Clay Nanocomposites: from Aqueous Gels to Multilayered Films
Stefanescu C., Stefanescu E.A., Stefanescu C., Stefanescu E.A., Daly W.H., Negulescu I.I., Virginia Commonwealth University, US
When passing a material through a semihyperbolic convergent die in an elongational rheometer, high degrees of order are induced in the material, and the entropy changes, indicative of orientation, can be calculated. The aim of [...]
Synthesis and Characterization of Metastable Nanocrystalline Cobalt
Applications of elemental cobalt are consequence of its phase-dependent magnetic properties; the anisotropic high-coercivity hcp-Co phase is preferred for permanent magnet applications, while the more symmetric low coercivity fcc- and, pseudo-cubic epsilon-Co can be used [...]
Enhanced oscillator strengths and optical parameters of doped ZnS bulk and nanophosphors
We synthesized, characterized, and investigated the oscillator-strength (OS), dipole-moment (DM) and integrated cross-section values (ICSVs) of singly (Mn) and doubly (Mn and Co or Ni) doped samples of ZnS bulk and nanophosphors. Although ZnS doped [...]
Fabrication of QD structures showing diode characteristics for electroluminescence (EL) and other applications
AlAmoody F., Rodriguez A., Papadimitrakopoulos F., Huang W., Ayers J., Jain F., University of Connecticut, US
The abstract talks about the estimation of the size of the cladded dots which are then used in fabrication of a diode like structure. It also talks about the nucleation of the dots with varying [...]
Complex Permittivity Measurements of Single-walled Carbon Nanotubes at Microwave Frequencies
In this work we have used a novel method for characterization of complex permittivity for nanotubes over the microwave frequencies. It uses dielectric resonance method and cavity pertrubation technique for extracting the complex permittivities of [...]
Characterization of graphene segregated on Ni
We report a surface segregation approach to synthesize high quality graphenes on Ni under ambient pressure. Graphenes were segregated from Ni surfaces by carbon dissolving at high temperature and cooling down with various cooling rates. [...]
High Resolution Surface Imaging Using a Carbon Nanotube Array with Pointed Height Distribution
In this paper, we discuss a new methodology to obtain high resolution electron micrographs of different materials using field emission from a pointed array of carbon nanotubes (CNTs) and a technique to map the surface [...]
Quantifying and enforcing the two-dimensional symmetry of scanning probe microscopy images of periodic objects
The defining features of a scanning probe microscope are a very fine probe that is scanned in two dimensions (2D), in very fine steps, very close to the surface of a sample, and a probe-sample [...]
In-Situ Nanomechanical-Electrical Testing of One-Dimensional Materials
One-dimensional nanomaterials including nanotubes are building blocks for constructing various complex nanodevices. Boron nitride (BN) nanotubes with structure similar to carbon nanotube are known to be among the strongest insulators in the world. In this [...]
Structural fingerprinting of nano-crystals based on high resolution transmission electron microscopy imaging: challenges and perspectives
The methods for structure identification and analysis of nanocrystalline particles are in high demand for nanotechnology and nanofabrication, areas that require fast, reliable and robust metrologies for nanometer-sized objects. High-resolution (HR) transmission electron microscopy (TEM) [...]
Gold Nanoparticle-Assisted AFM Study of DNA Damage and Repair
The purpose of this research is to investigate gold nanoparticles as a potential scaffold for the characterization of DNA damage and repair using atomic force microscopy techniques. The procedure consists of functionalizing the surface of [...]
Measurement of Structural and Mechanical Property of Live Mesangial Cell (MC) by Atomic Force Microscopy (AFM)
Lee G.J., Lee S-H., Park E.J., Park H.K., Park J.H., Lee G.J., Lee S-H., Lim J.E., Eo Y.H., Han J.H., Choi S., Park E.J., Park H.K., Park J.H., Shin Y.A., Jin H.S., Hong K.W., Oh B.S., Park E.J., Park H.K., Park J.H., Kyung Hee University, KR
Atomic force microscopy (AFM) has become an important device to visualize various cells and biological materials for non-invasive imaging. The major advantage of AFM compared to the conventional optical and electron microscopes is its convenience. [...]
Photoluminescence Studies of Zn-ZnO Inorganic/ SDS Organic Nanocomposite Materials Synthesized by Laser Ablation at Different Temperature
Materials at the nanoscale have shown their importance in the fabrication of electronic, optoelectronic, sensing, and energy storing and harvesting devices. They act also vital role in the fluorescent tagging, fluorescence microscopy and imagine. Fluorescent [...]
Evaluation of Uncertainty in Nanoparticle Size Measurement by Electro-gravitational Aerosol Balance
A primary standard of particle size ranging from 100 nm to 500 nm in number mean diameter, based on the electro-gravitational aerosol balance, has been developed in Center for Measurement Standards of Industrial Technology Research [...]
Crack Healing and Crack Closure Retardation Effect Through Release of Liquid Monomer in the Wake of Crack
Of late a new paradigm of materials design, that of biomimicry, has gained wide attention for its promise to design and develop new synthetic materials exploiting lightweight, failure resistant and multifunctional properties of biological materials. [...]
Obtaining and Characterization of Tin Powders by Reactive Milling in Air
TiN powder was obtained by reactive milling of a titanium powder in air. The Ti powder was milled in an attrition mill. Characterization of the powders was carried out by means of X-ray diffraction (XRD), [...]
Growth, Electrical and Optical Properties of SnO2:F on ZnO , Si and Porous Si Structure
Ferreira da Silva A., Castro Meira M.V., Persson C., Gutman N., Sa’ar A., Klason P., Willander M., Canestraro C.D., Moreno T.V., Roman L.S., Universidade Federal da Bahia, BR
1- Instituto de Física, Universidade Federal da Bahia, Ondina, Salvador-Ba,40210-340, Brazil 2- CETEC-Universidade Federal do Recôncavo da Bahia, Cruz das Almas-Ba, 44380-000, Brazil 3- Department of Materials Science and Engineering, Royal Institute of Technology,SE-100 44 [...]
The Effect of Microstructure on I-V Properties in Si/SiO2 Film
P-type Si(100) wafers with 8~11 Ω•cm resistivity were used as substrates. The Si substrates were put into the magnetron sputtering device (JGP560B), and three kinds of Si/SiO2 film were fabricated using the R.F magnetron sputtering [...]
Dispersed stabilized Pt nanoparticles synthesized from an organometallic precursor
Ramírez-Meneses E., Torres-Huerta A., Domínguez-Crespo M.A., Montiel-Palma V., Hernández-Tapia G., Cicata - IPN Unidad Altamira, MX
In electrocatalysis, carbon materials have been generally employed to support metallic nanoparticles for electrochemical applications. Many methods to prepare CNTs supported metal nanoparticles including electrochemical, microwave irradiation and wet chemical methods have been reported in [...]
Real-Time Characterization of Polymer Film Degradation with Quartz Crystal Microbalance with Dissipation Monitoring
There is a growing need for new technologies to quantitatively measure the surface properties of material interfaces. One technique in particular, the Quartz Crystal Microbalance with Dissipation Monitoring (QCM-D), fulfills the need for monitoring real-time [...]
Improving the structural characterization of supported on glass gold nanoparticles using Atomic Force Microscopy at vacuum
Muñoz Aguirre N., Rivera López J.E., Martínez Pérez L., Tamayo Meza P., Instituto Politecnico Nacional, MX
Surface characteristics of gold nanoparticles [1] at ambient conditions and in vacuum of the order of 10-4 Torr are compared using Atomic Force Microscopy topographic images in tapping mode. Figure 1 shows the improvement of [...]
Fabrication and characterization of nano-structured ferromagnetic Ti1-xFexO2 thin films
Apetrei R., Negrila C., Macovei D., Dascaleanu V., Teodorescu C.-M., Luca D., Alexandru Ioan Cuza University, RO
Ti1-xFexO2, 300 nm thin films with x ranging between 0.0 and 0.6, have been fabricated by RF magnetron sputtering. Specimen characterization was done by XPS, AFM, XRD,UV-Vis spectrometry, MOKE, and XANES/EXAFS techniques. The AFM and [...]
Synthesis and characterization of polypyrrole nanowires using alternating amphiphilic copolymer nanotubes as templates
It has been reported that poly(styrene-alt-maleic anhydride) (SMA) chains would self-assembled into a nanotube in aqueous solution at pH7 by associating through a linear conformation which favours the association of the chains by decreasing the [...]
Preparation of Y3Al5O12:Eu3+ waveguide films by sol-gel method
García Hernández M., García-Murillo A., de J. Carrillo Romo F., Torres Orozco C., García Hernández M., García-Murillo A., Ramírez-Meneses E., Cicata - IPN Unidad Altamira, MX
In this work, Y3Al5O12:Eu3+ (5 mol% Eu3+) optical thick films were obtained by sol-gel process. The films were dip-coated by dip-coating technique. The synthesis was accomplished using metal organic precursors, such as Al(tri-sec-butoxide) Al(OC4H9)3, yttrium [...]
Variable temperature measurements in cryogenic probe stations; forces on the probes
Electrical property measurements of nanoscale materials are important for characterization and understanding of materials and devices. Equally important is to measure these properties at various temperatures. We present results using a new probe design that [...]
Functional nanowire microscopy tip
Kim J., Shin Y-H, Yun J.H., Han C-S, Hyun M.S., Korea Institute of Machinery and Materials (KIMM), KR
Excellent electric conductive nickel silicide (NiSi) nanowire (NW) was aligned on a conventional Si tip and performed as an electric force microscopy (EFM) probe. Single crystalline structured NiSi NW was grown in plasma-enhanced chemical vapor [...]
Analytical Transmission Electron Microscopy characterization of nano-structured materials
This article reviews applications of analytical transmission electron microscopy (TEM) to characterize nano-structured materials and devices. Several practical examples are provided that show the diverse imaging and microanalysis mechanisms available in a modern TEM. By [...]
Effects of centrifugation on the carboxyl modified single-walled carbon nanotubes suspension
Lee B.C., Lee J.A., Lee S.M., Lee Y-H, Lee B.C., Lee J.A., Lee S.M., Lee Y-H, Lee B.C., Lee J.A., Lee S.M., Lee Y-H, Paek K-K, Ju B.K., Lee B.C., Lee J.A., Lee S.M., Lee Y-H, Korea Institute of Science and Technology(KIST), KR
In this paper, the properties of supernatant samples obtained go through steps of acids oxidation and centrifugation is characterized by UV-VIS-NIR spectroscopy and Raman spectroscopy. The ultraviolet-visible-near infrared absorption spectra of each sample show the [...]
The Role of Carbon Nanotubes in Enhancing the Effects of Chemotherapeutic Agents in Cancer Treatment
Nanotoxicology is an important field of study that fills the knowledge gap concerning the introduction of nanomaterials into human cells, their interactions with biological systems, and the assessment of their risks to living organisms. In [...]
Fracture of a 08KP Steel in Nano-Fragmented State
The evaluation of the resistance to the fracture toughness of metals and metal composites that work in the plastic regime require of the using of highly complex experimental methods and analysis which are not at [...]
Characterization of Intracellular Biogenic Crystals Synthesized by Freshwater Magnetotactic Bacteria (MTBs)
Intracellular biogenic crystals synthesized by freshwater magnetotactic bacteria (MTBs) from Colombia were characterized. MTBs were separated from water/sediment samples using a magnetic field of 6 Gauss. Bacteria were observed by transmission electronic microscopy (TEM). Bacterial [...]
Characterisation of Nanoparticle Dispersions by Size and Scattering Intensity Simultaneously
A novel extension to the Nanoparticle Tracking and Analysis (NTA) technique is described. Previously a nanoparticle dispersion’s size distribution could be measured by simultaneously tracking many particles and directly (unlike DLS/SLS) calculating the particle size [...]
Structural Fingerprinting of Nanocrystals in the Transmission Electron Microscope
Three novel strategies for the structurally identification of nanocrystals in a Transmission Electron Microscope (TEM) are presented. Either a single High-Resolution Transmission Electron Microscopy (HRTEM) image or a single Precession Electron Diffractogram (PED) can be [...]
Automated Crystal Orientation and Phase Mapping of Iron Oxide Nano-Crystals in a Transmission Electron Microscope
An automated technique for the crystal phase and orientation mapping of polycrystalline materials in a TEM has recently beam developed. This technique is based on template matching of experimental electron diffraction spot patterns to their [...]
Accommodation of Characterization Tools: Understanding the Building Vibration, Stray Electromagnetic Fields and Acoustic Interference to Avoid Catastrophic Inferences in New Building Construction or Building Renovations
Characterization tools are the cornerstone to nanoscale research including microscopy (TEM, SEM, AFM and Aberration Corrected Electron Microscopy), spectroscopy/spectrometry (NMR, FTIR, Acoustic), and advanced nano mechanical (nano scale manipulations) tools. Characterization tools are highly sensitive [...]
Journal: TechConnect Briefs
Volume: 1, Nanotechnology 2009: Fabrication, Particles, Characterization, MEMS, Electronics and Photonics
Published: May 3, 2009
Industry sector: Advanced Materials & Manufacturing
Topic: Materials Characterization & Imaging
ISBN: 978-1-4398-1782-7