A nanoscopic probing technique to measure voltage drop across an operating device in cryogenic temperature condition has been developed and established. The cross section surface of the terahertz (THz) quantum cascade laser (QCL) was profiled [...]
We report on the first time application of Ballistic Electron/Hole Emission Microscopy (BEEM/BHEM) to imaging and spectroscopy of metal NCs in the ultrathin dielectric films. We studied the yttria stabilized zirconia (YSZ) films (12% mol. [...]
Internal structure of nanocrystals can be extracted from Pair Distribution Function, which is obtained by Fourier transform of the diffraction data. Such a transform, G(r), contains complete information on inter-atomic distances present in the investigated [...]
This work brings a new and improving method to the determination of multimodal and polydisperse particle size distribution by Dynamic Light Scattering. In this context, we develop a Bayesian method for the estimation of the [...]
X-ray reflectometry is a highly sensitive non-destructive method of the electron density profile determination in multilayer nanostructures. To evaluate the density variation with depth from the reflectivity data one uses traditionally the least squares method. [...]
A major drawback of using metal oxide nanoparticles as contrast agent in MRI is related to their low saturation magnetization mainly due to their particle size. The current works seeks to solve this problem by [...]
Study of plasmonic nanoparticles and their interaction with biomolecules has attracted great deal of attention due to potential utility in a wide variety of areas, such as drug nanocarrier systems. However, to enable full exploitation [...]
The outstanding optical and antibacterial properties of silver nanoparticles have attracted great deal of interest amongst nanobiotechnologists. Designing hybrid systems of nanoparticles and biomolecules as drug nanocarriers of enhanced properties has paved the way for [...]
Silver nanoparticles show enhanced properties, when supported onto a substrate and incorporated into organic or inorganic matrix. Their remarkable properties are shape and size dependent. Ethylene glycol and its polymers are environment friendly or environmentally [...]
A methodology has been developed to measure mass, size and density of the core and the shell of a core-shell nanoparticle for the first time. The FFF-based methodology allows for the measurement of the mass [...]
The structure, the state of interfaces and magnetoresistance of [Co(1.5nm)/Cu(0.9nm)]n superlattices have been studied. The magnetoresistance decreases with the growth of n from 38% for n = 10 to 24% for n = 40. TEM [...]
Our results are based on the use of the analysis techniques such as the Auger Electron Spectroscopy (AES) and the Electron Energy Loss Spectroscopy (EELS) which are well appropriated to study the surface of point [...]
Despite some reports regarding the obtaining of magnetite or maghemite by thermal treatment of siderite, none of them refer to porosity developed in these iron oxides after the thermal treatment. We present here a case [...]
The development of standardized and optimized methods to monitor the behavior of engineered nanomaterials (ENMs) in complex environments is considered a critical component in ENM risk assessment. Robust, rigorously optimized methods are currently lacking, in [...]
The photo-generation carriers’ transport characteristics in CdTe quantum dots (QDs) capped by ligand were probed using a combination of surface photovoltaic (Figure 1) and photoacoustic techniques. The results confirmed that the QDs were composed of [...]
An acoustoelectric effect has been experimentally studied in a graphene film fabricated on the top of a piezoelectric crystal of the lanthanum–gallium silicate family Ca3TaGa3Si2O14 (CTGS) grown by the Czochralski method. The unit-cell parameters were [...]
Reliable methods for studying the magnetization dynamics of metal ferrite nanoparticles (NP) are needed, as these particles are attractive candidates for biomedical applications such as in targeted drug delivery, imaging, and magnetic hyperthermia. We investigate [...]
A major challenge in monitoring indoor exposures to nanoparticles is the selection and effective use of suitable instrumentation. Comparability, portability, response time, and reliability are important selection criteria in addition to reasonable cost. Amongst these [...]
The characterization of micro and nano particles suspensions is still a challenge, especially if very low concentration of particles mixtures are concerned. To reach this aim, optical techniques are attractive because they provide a fast [...]
, Bonevich J.E.
, Gorham J.M.
, Guthrie W.F.
, Hackley V.A.
, Liu J.
, MacCuspie R.I.
, Murphy K.E.
, Winchester M.R.
, National Institute of Standards and Technology, US
In this study we use a conventional inductively coupled plasma mass spectrometer operated in single particle mode (spICP-MS) to simultaneously characterize the size distribution and dissolved silver fraction of a new candidate silver nanoparticle reference [...]
Hemoglobin has a very strong affinity with oxygen and thus is a good catalyst to carry oxygen for many oxidation reactions. Many researchers have explored this property of hemoglobin to develop sensors for the detection [...]
For synthesizing uniform sub-100-nm Si nanowires (NWs), we introduce a metal-assisted chemical etching (MCE)-based facile and high-yield route, employing simple thermal annealing and vacuum deposition processes. Under rapid thermal annealing, an ultrathin Ag film on [...]
Magnetic nanowires, nanodots and nanoparticles are an important class of nanostructured magnetic materials. These structures are ideal candidates for important technological applications in spintronics, high density recording media, microwave electronics, permanent magnets, and for medical [...]
Journal: TechConnect Briefs
Volume: 1, Nanotechnology 2014: Graphene, CNTs, Particles, Films & Composites
Published: June 15, 2014
Industry sector: Advanced Materials & Manufacturing
Topics: Materials Characterization & Imaging