Papers:
Quantitative Synchrotron Grazing Incidence X-ray Scattering and Reflectivity Analysis of Nano-structures and Patterns Supported with Substrates
Ree M., Yoon J., Heo K., Jin K.S., Jin S., Jin K.S., Jin S., Lee B., Park I., Park Y.H., Choi S.C., Kim G., Kim H., Kim J-S, Kim J., Kim K.W., Kim G., Kim H., Kim J-S, Kim J., Kim K.W., Oh W., Park I., Park Y.H., Hwang Y., Kim G., Kim H., Kim J-S, Kim J., Kim K.W., Kim G., Kim H., Kim J-S, Kim J., Kim K.W., Kim G., Kim H., Kim J-S, Kim J., Kim K.W., Chang T., Pohang University of Science & Technology, KR
Single-layer, multi-layer, and patterned nanostructures were fabricated with aids of substrates from various material systems (polymers, diblock copolymers, polymer blends, alumina precursors, silane precursor, etc.) using wet spin-coating and subsequent dry and thermal process, chemical [...]
3D structure of nano-scale materials by total x-ray scattering
Knowledge about the three-dimensional (3D) structure, including the type and positions of atomic/molecular units in space, is an important prerequisite to understanding, predicting and improving properties of materials. With common materials it is routinely obtained [...]
Determination of micro-structural properties with x-ray absorption fine structure
Han S.-W., Park S.H., Yu H.-J., Jeong E.-S., Kim S-H, Kim Y.J., Kim S-H, Kim Y.J., Yi G.-C., Chonbuk National University, KR
We studied the structural properties of ZnO nanostructures with x-ray absorption fine structure (XAFS) to understand the growth mechanism of vertically aligned ZnO nanorods of the average diameter of 50 - 150 nm. The orientation-dependent [...]
Nanoparticle Formation in Supercritical Fluids – The World’s First Real Time In-situ Investigation
Jensen H., Bremholm M., Nielsen R.P., Joensen K.D., Chen Y-S, Almer J., Søgaard E.G., Iversen B.B., Iversen S.B., Iversen B.B., Iversen S.B., SCF-Technologies, DK
In this study the world’s first real time in-situ simultaneous small angle x-ray scattering (SAXS) and wide angle x-ray scattering (WAXS) characterization of supercritical nanoparticle formation was performed. In previous supercritical studies the reaction is [...]
Lattice Engineered Nanoparticles
Nano-particulate oxides such as ZnO and TiO2 are receiving much attention as functional nanoparticles predominantly due to their increased efficiency in absorbing UV at small particle sizes. However, whilst protection against UV may be maintained [...]
Analytical Methods for Nanotechnology
Growth in the fabrication of micro- and nano- engineered materials and systems has led to increased demand for analytical and characterization methods for these materials and systems. Many of the new manufacturing methods are extensions [...]
How to SPION Glass Transitions
The magnetic properties of superparamagnetic iron oxide nanoparticles (SPIONs) have made them useful tools in a variety of applications ranging from drug delivery to magnetorheologic valving in microfluidic systems. The structure of SPIONs is typically [...]
Near-Field Raman and Luminescence Spectroscopies to evidence chemical heterogeneity of surfaces with sub-wavelength spatial resolution
Near-field scanning optical microscopy (NSOM or SNOM) offers the opportunity to collect optical information at a spatial scale well below the diffraction limit. Using a silica fiber tip coated with aluminum and having a small [...]
Analysis of Interfacial Water Structure close to Mixed Langmuir Monolayers by Sum-Frequency Spectroscopy
Sum frequency spectroscopy (SFS) in the OH stretching region was employed to obtain structural information about the interfacial water structure underneath Langmuir monolayers on H2O subphase. The films were composed by the model lipid dioctadecyldimethylammonium [...]
Correlated roughness in polymer film containing magnetic nanoparticles
Abul Kashem M.M., Perlich J., Schulz L., Roth S.V., Müller-Buschbaum P., Technische Universität München, DE
We have investigated the roughness correlation between the substrate and this new type of nanocomposite film, prepared by using diblock copolymer poly(styrene-b-isoprene) as matrix and iron oxide nanoparticles covered with polystyrene hairs from a-lithium polystyrene [...]
An All-Digital Cantilever Controller for MRFM and Scanned Probe Microscopy using a Combined DSP/FPGA Design
de Roover D., Porter II L.M., Emami-Naeini A., Marohn J.A., Kuehn S., Garner S., Smith D.D., SC Solutions, Inc., US
An all-digital cantilever controller for magnetic resonance force microscopy (MRFM) was developed through a close collaboration between SC Solutions, Cornell University, and the U.S. Army Research Laboratory. The advantage of an all-digital controller is its [...]
Highly sensitive Scanning Capacitance Microscope
Summary—Emerging nanotechnology and biotechnology are in direct need of metrology tools with better than 10 –nm spatial resolution that are capable of imaging surfaces and nanoembeded structures. Scanning local probe microscopy (SLPM) techniques have advanced [...]
Confocal Raman AFM, a powerful tool for the nondestructive characterization of heterogeneous materials
The Confocal Raman-AFM is a breakthrough in microscopy. It combines three measuring techniques in one instrument: a high resolution confocal optical microscope, an extremely sensitive Raman spectroscopy system, and an Atomic Force Microscope (AFM). Using [...]
The Casimir Force and quantum interaction between conducting macro-bodies at nanoscale distances
Petrov M., Petrov V., Petrov M., Petrov V., Bryksin V., Petter J., Tschudi T., Darmstadt Technical University, DE
We report for the first time on the optical detection of a periodical mechanical interaction between conducting macro-bodies induced by the periodical Casimir force. The influence of conductivity on the Casimir force has been analysed. [...]
Nanoscale Deformation Measurements for Reliability Assessment of MEMS and NEMS
Recent advances in microtechnology and the development of new electronics and micro/nanosystem devices in automotive industry, communication sector and life science have led to a strong need in material characterization on the micro and nano [...]
Effective Use of Focused Ion Beam (FIB) in Investigating Fundamental Mechanical Properties of Metals at the Nano-Scale
In this work, FIB is utilized in manufacturing of nano-pillars to investigate plasticity of metals at nano-scale. Gold nano-pillars were fabricated from bulk gold and epitaxial gold films on MgO substrates and subsequently compressed using [...]
Mechanical Properties of Polycrystalline 3C-SiC Heteroepitaxial Layers
Silicon carbide (SiC) is widely recognised as the leading candidate to replace silicon in Micro Electro-Mechanical Systems (MEMS) devices operating in harsh environments. The superiority of SiC over Si as regards mechanical, chemical and electronic [...]
Understanding and utilizing molecular constraints in nanoscale material designs
Challenges regarding nanoscale material designs often arise from the collision of two sets of critical length-scales; namely, device dimensions approach the length scale of molecular-level processes. On one hand, these finite size constraints cannot be [...]
Advanced CryoTEM and Tomography for Two- and Three-Dimensional Nano-Characterisation of Soft Matter
Sourty E., de Haas F., Frederik P.M., Frederik P.M., Loos J., Stokes D.J., Hubert D.H.W., FEI Company, NL
Recent advances in transmission electron microscopy (TEM) mean that we are able to achieve unprecedented resolution at the atomic level. Furthermore, improved methods for obtaining and reconstructing tilt series projections allow us to create high [...]
Characterisation of Native-State Soft Matter using ‘Multi-Mode’ Electron Microscopy
Soft condensed matter and complex fluids are of increasing technological significance. It is therefore crucial that we extend the capabilities of conventional solid state imaging and analytical techniques to include the observation of materials such [...]
Accommodation of Characterization Tools
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 [...]
The Impact of Advanced S/TEM on Atomic-Scale Characterisation and Analysis
As the limits of nanotechnology are expanded ever further, so too must we push back the frontiers of imaging and analysis. The need for tools that can deliver new, ultra-high resolution information is driving the [...]
In-situ Gas Injection-Heating Atomic Resolution TEM for Nanomaterials
In-situ gas environmental transmission electron microscopy (TEM) capability has been developed based on a Hitachi 300 kV high-resolution transmission electron microscope (H-9500) combined with a Hitachi gas injection-heating sample holder. This simple but high performance [...]
Image-based Nanocrystallography in Two and Three Dimensions with
It is well known that many nanocrystals can not be identified from their powder X-ray diffraction pattern as it is customary for collections of micrometer sized crystals. The crystallographic phase and shape of nanocrystals can, [...]
Characterisation of Electrical Fields of Buried Interdigitated Nanoscale Ti-Electrode Arrays by a Novel Atomic Force Microscopy Measurement Procedure and Their Fabrication by FIB Milling
The fabrication and characterisation of interdigitated titanium nanoelectrode arrays with 500nm and 50nm width and spacing is described in this work. The electrical-field above the fabricated 500nm electrodes can be sensed by means of a [...]
TEM Studies of Iron Oxide Nanoparticles for Cell Labeling and Magnetic Separation
One of the application areas for magnetic nanoparticles (MNPs) is in cell labeling and magnetic separation. This process involves tagging MNPs onto desired cells and then separating them from unwanted entities using a sensor which [...]
Structural Analysis of Ptx-Pd1-x Nanoparticles Supported on amorphous Silica by High Resolution Electron Microscopy
Bimetallic nanoparticles structures and properties are distinct from those of pure elemental clusters. Particularly nanoalloy clusters finely dispersed onto high surface area supports, play an important role in heterogeneous catalysis because the performance of a [...]
Real-Time In-Situ Measurement of Nanoparticle Size Distributions Using Electrical Mobility Technique
Electrical Mobility Technique for real-time sizing of aerosolized nanoparticles is described. Case studies of measurement of nanoparticles using electrical mobility and comparison of results with Scanning Electron Microscopy are shown.
Quantitative Synchrotron Grazing Incidence X-ray Scattering Analysis of Cylindrical Nanostructure in Supported Thin Films
Yoon J., Yang S.-Y., Lee B., Joo W.-C., Heo K., Kim J.K., Ree M., Pohang University of Science and Technology, KR
Grazing incidence X-ray scattering (GIXS) has emerged as a powerful technique for characterizing internal structure of hin film. The X-ray beam impinges at a grazing angle onto the sample slightly above the critical angle, so [...]
Synchrotron X-Ray Scattering Studies of Star-Shape Polymers
Jin K.S., Jin S., Higashihara T., Jin K.S., Jin S., Yoon J., Heo K., Kim J., Kim K.W., Kim J., Kim K.W., Hirao A., Ree M., Pohang University of Science and Technology, KR
The physical properties of well-defined star-shape polystyrenes with high number of arms (6 to 57 arms) in good and theta solvents were studied using synchrotron X-ray scattering. The scattering profiles for multi-armed polystyrenes shown the [...]
Preparation and Characterization of Mn and Co substituted nano particle ZnO
With a view to study the influence of nano size on various physical properties in general and ferromagnetic properties in particular, a series of oxide based diluted magnetic semiconductors were prepared by chemical routes such [...]
Characterization of Nanaoporous Low-Dielectric Constant SiCOH Films using Organosilane Precursor
Heo K., Park S.-G., Yoon J., Jin K.S., Jin S., Jin K.S., Jin S., Rhee S.W., Ree M., Pohang University of Science and Technology, KR
The grazing incidence small-angle X-ray scattering (GISAXS) and X-ray reflectivity (XR) analysis were performed to investigate the nanoporous structure of low dielectric constant carbon-doped silicon oxide (SiCOH) films, which were deposited with plasma enhanced chemical [...]
Nanometre particle sizing and stability measurement with tabletop PCCS
Modern materials very often derive their properties from nano-particles. This implements a fast growing demand for control of particle size in this field. The most popular technique to do so is PCS, photon correlation spectroscopy. [...]
In-plane Vibration Measurements of Micro Scale Devices Using Sub-Pixel Image Registration Algorithms and Stroboscopic Illumination
Rapid developments in micro devices created a necessity for reliable testing methods for characterization. There are several methods for vibration measurements but most of them use out-of-plane displacements. However, in most cases in-plane measurements are [...]
Microstructure and Pile-up effect on Nanoindentation measurements of FCC and BCC Metals
A study of effects of crystal orientation and pile-up on mechanical properties of Fe, Ni and Cu is made.
Application of Abductive Network and FEM to Predict the Stress-Strain Curve with strain hardening effect of Bulk Metals by Nanoindentation test
Finite element method (FEM) has been widely used for numerical simulation of indentation tests on bulk material in order to analyze its deformation response and investigate the influence of indenter geometry, friction and material elastic [...]
Nano-mechanical testing of Novel bioactive carbon nanotubes/HAP nano particles composite coatings
Hydroxyapatite (HAP) is an important material for biomedical implants, as its chemical composition is similar to that of bone tissue. Synthetic HAP is a biocompatible prosthetic material, bonding strongly to the bone and promoting the [...]
MEMS Reliability Assessment Program – Progress to Date
Micro-electromechanical systems (MEMS) are a technology that the Army and DOD rely on heavily to achieve their objectives. The MEMS devices within these systems will be required to last the lifetime of the weapon systems [...]
Predicting the Positive Effects of Combined Metallurgical and Thermo-Mechanical Impacts on the Reliability of Solder Joint Interconnections
Generally speaking, solder joints fail due to both fatigue and creep. Therefore both mechanisms are strongly considered by designers and manufacturers as an important design criteria. However, since most designers take parameters individually, their designs [...]
Structural Analysis of Platinum Paladium Nanoparticles Supported on amorphous Silica by High Resolution Electron Microscopy
Bimetallic nanoparticles structures and properties are distinct from those of pure elemental clusters. Particularly nanoalloy clusters finely dispersed onto high surface area supports, play an important role in heterogeneous catalysis because the performance of a [...]
Laser diffraction study of inverse opals
We discuss the experimental data on laser diffraction in tungsten oxide photonic crystal films with an inverse opal structure. The samples were prepared using deposition of monodisperse polystyrene microspheres onto a vertical glass substrate, infiltration [...]
Invertible Polymers for the Stabilization of Nanoparticles
A new range of amphiphilic polyesters with both hydrophilic and hydrophobic functionalities alternately distributed in the polymer backbone has been synthesized. These polyesters are soluble in aqueous and organic media, where they reveal inverse behavior [...]
Size Dependence Of Conjugation of Amyloid Beta Protein On Gold Colloidal Nanoparticles’ Surfaces
Sri Hartati D., Tsang W., Briglio N.M., MacCormac J.E., Yokoyama K., The State University of New York at Geneseo, US
Fibrillogenesis of amyloid beta (AB) monomers is a hallmark of Alzheimer’s disease. The initial stage of this process involves intermediates of Abeta aggregates; which have been the focus of many previous fibrillogenesis studies. We discovered [...]
Journal: TechConnect Briefs
Volume: 4, Technical Proceedings of the 2007 NSTI Nanotechnology Conference and Trade Show, Volume 4
Published: May 20, 2007
Industry sector: Advanced Materials & Manufacturing
Topic: Materials Characterization & Imaging
ISBN: 1-4200-6376-6