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Showing 1 to 20 of 69 for “"ISAM"”.
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Interferometric Synthetic Aperture Microscopy (ISAM) Reconstruction and Characterization in a High Numerical Aperture System
… Interferometric synthetic aperture microscopy (ISAM) is a newer technique that can overcome the typical dependence between lateral resolution and depth-of-focus of an optical coherence tomography (OCT) imaging system by offering spatially invariant resolution within the whole 3D data set, …
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Construction of an Optical Quarter-Wave Stack Using the ISAM (Ionic Self-Assembled Multilayers) Technique
… known as Ionic Self-Assembled Multilayers or ISAM deposition. This technique takes advantage of the electrostatic attraction between oppositely charged materials and ideally results in a uniform nanoparticle film whose thickness and optical properties can be tightly controlled. Deposition of a …
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Estimation of the global carbon fluxes due to agricultural management activities using a land surface model (ISAM)
Agricultural activities contribute to global greenhouse gas (GHG) emissions and climate. The worldwide hike in the food demand due to the rapidly growing population over time has intensified agricultural activities, resulting in a significant amount of GHG emissions (e.g., CO2, CH4, and N2O). …
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The Application of Thin Film Ionic Self-assembled Multilayer (ISAM) Nanostructures in Electromechanical Bending Actuators and Micro-fabricated Gas Chromatography (uGC) Devices
Ionic self-assembled multilayer (ISAM) thin film nanostructures, including highly porous and conductive gold nanoparticles (GNP), and highly porous and thermally stable silica nanoparticles (SNP), were fabricated via the layer-by-layer (LbL) self-assembly technique. Their application in ionic …
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Multifocal interferometric synthetic aperture microscopy
… interferometric synthetic aperture microscopy (ISAM) to optical coherence tomography (OCT) data collected with multiple positions of the focal plane. Multifocal ISAM achieves spatially invariant resolution like ISAM by applying the solution of the inverse problem to the forward model for each …
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Sensitivity control of optical fiber biosensors utilizing turnaround point long period gratings with self-assembled polymer coatings
… to show that Ionic Self-Assembled Multilayers (ISAMs) adsorbed on Long Period Gratings (LPGs) can serve as a highly sensitive, robust, inexpensive optical-based biosensor platform. The ISAM technique is a layer-by-layer deposition method that builds nanometer-thick films based on the principle …
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Non-Gaussian Factor Graph Inference for Robotic Navigation
… efficient incremental updates similar to iSAM2, albeit in the more challenging non-Gaussian setting. With this conditional sampling framework, we use normalizing flows to learn local conditional distributions on cliques of the Bayes tree. The normalizing flows exploit the expressive power …
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Quantifying biophysical and biogeochemical influence on northern high latitudes greenhouse gases dynamics
… model, the Integrated Science Assessment Model (ISAM), to explore how the physical and chemical interactions within the atmosphere-land-soil continuum determined the production, transport and flux of GHGs from site to regional and global scales. I focused on the impacts of three key GHGs that can …
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Ionic Self-Assembled Multilayers Adsorbed on Long Period Fiber Gratings for Use as Biosensors
… non-portable. Ionic Self-Assembled Multilayers (ISAMs) adsorbed on Long Period Fiber Gratings (LPGs) provides an attractive platform for building optical sensors, which could potentially overcome the disadvantages of SPR biosensors. The ISAM technique is a type of layer-by-layer deposition …
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Self-organization on Nanoparticle Surfaces for Plasmonic and Nonlinear Optical Applications
… with ionic self-assembled multilayer (ISAM) films, tuning the geometry of the particles to make their plasmonic resonances overlap with the frequency of optical excitation. The designed hybrid metallic/organic nanostructures exhibited large enhancements of the efficiency of second …
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Improvement of the Optical and Mechanical Properties of Silica Nanoparticle Ionic Self-Assembled Multilayer Anti-Reflection Coatings on Glass and Polycarbonate Substrates
… polycation known as diazo-resin (DAR) is used in ISAM deposition with the modified silica nanoparticles. Subsequent exposure to UV converts the ionic bonds between the DAR and sulfonate groups into covalent ones. The second method to improve the mechanical strength is to heat the ISAM silica …
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An Integrated Modeling Study of Ocean Circulation, the Ocean Carbon Cycle, Marine Ecosystems, and Climate Change
… earth system model of intermediate complexity, ISAM-2.5D (Integrated Science Assessment Model). First, through the simulation of radiocarbon (in terms of Delta14C) it is demonstrated that the inclusion of isopycnal diffusion and a parameterization of eddy-induced circulation in the ISAM-2.5D …
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Iterative Engineering, System Confidence, and In-space Servicing Assembly & Manufacturing
… In-space Servicing, Assembly, and Manufacturing (ISAM) has ignited new prospects for system architectures, designs, and applications. Until now, iterative engineering has only leveraged in designing robust space systems to be resilient and self-reliant in post-launch deployment/operations. ISAM …
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Second-Order Nonlinear Optical Characteristics of Nanoscale Self-Assembled Multilayer Organic Films
Ionically self-assembled monolayer (ISAM) films are typically an assemblage of oppositely charged polymers built layer by layer through Coulombic attraction utilizing an environmentally friendly process to form ordered structures that are uniform, molecularly smooth and physically robust. ISAM …
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Nonlinear Optical Properties and Structural Characteristics of Ionically Self-Assembled Nanoscale Polymer Films Influenced by Ionic Concentration and Incorporation of Monomer Chromophores
Ionically self-assembled monolayer (ISAM) films are typically an assemblage of oppositely charged polymers built layer by layer through coulombic attraction utilizing an environmentally friendly process to form ordered structures that are uniform, molecularly smooth, and physically robust. ISAM …
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Properties of Nanoscale Biomaterials for Cancer Detection and Other Applications
… experiments of ionic self-assembled multilayer (ISAM) films have been reported examining their survivability through repeated thermal cycles from -20° C to 120° C in ambient atmospheric conditions. The films were constructed from alternating layers of Nile Blue A and gold nanoparticles which …
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Nanocomposite of ZrO2/Polymer Thin-Film Coatings by the Ionically Self-Assembled Monolayer Technique
… by the Ionically Self-Assembled Monolayer (ISAM) technique. Particle size distribution was measured to calculate the grain diameter of the zirconia particles. UV/Vis spectroscopy and ellipsometry were used to characterize the ISAM technique. SEM and AFM were used to observe the microscopic …
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Ionic Self-Assembled Multilayers in a Long Period Grating Sensor for Bacteria and as a Source of Second-Harmonic Generation Plasmonically Enhanced by Silver Nanoprisms
Ionic self-assembled multilayers (ISAMs) can be formed by alternately dipping a substrate in anionic and cationic polyelectrolytes. Each immersion deposits a monolayer via electrostatic attraction, allowing for nanometer-scale control over film thickness. Additionally, ISAM films can be applied to …
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The potential implications of bioenergy crop production for water and energy balance and carbon and nitrogen dynamics in the United States
… model, the Integrated Science Assessment Model (ISAM), to develop a dynamic crop growth model for specific row crops (corn and soybean) and bioenergy grasses (Miscanthus, Cave-in-Rock and Alamo switchgrasses). The dynamic crop growth model in ISAM accounts for crop-specific phenology development, …
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Multiple relative pose graphs for cooperative mapping
… mapping and localization. Among these methods, iSAM (incremental smoothing and mapping) gives an exact incremental solution to the SLAM problem by solving a full nonlinear optimization problem in real-time. In this paper, we present a novel extension to iSAM to facilitate multi-robot mapping …
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