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Showing 1 to 16 of 16 for “"Magnetically assisted"”.
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Magnetically assisted impaction mixing of nanosize particles
Magnetically assisted impaction mixing (MAIM) is a novel dry mixing technique, which can be used to mix nanoparticles. Mixing of nanoparticles is usually conducted in solvent-based mixing techniques. The solvents used in these techniques are usually organic, which can be expensive and harmful to …
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Mixing of nanosize particles by magnetically assisted impaction techniques
… The research shows that HoM improved with magnetically assisted impaction mixing techniques indicating that the HoM depends on the product of processing time with the number of magnets. In a fluidized bed set-up, MAIM not only improved dispersion, but it was also found that the magnetic …
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Simulation and modeling of magnetically-assisted impaction coating (MAIC) process for dry particle coating
… happening at multiple length and time scales in magnetically assisted impaction coating process. The smallest length scale is of the order of the molecular size and is important because during collisions the molecules rearrange themselves to form a semi-permanent bond between the core and …
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Optoelectronic integration using the magnetically assisted statistical assembly technique : initial magnetic characterization and process development
… full-scale wafer bonding, and self-assembly. Magnetically Assisted Statistical Assembly (MASA) is an example of the latter technique and improves scale and flexibility by enabling the simultaneous integration of large numbers of individual devices. This thesis work is focused on the …
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Magnetically assisted statistical assembly of III-V heterostructures on silicon : initial process and technology development
This work is the initial investigation of magnetically assisted statistical assembly (MASA), a novel silicon I-v integration technique developed at M.I.T. Initially procedures for processing optoelectronic devices into magnetically sensitive 40 micron discs were performed and refined. Cobalt …
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The Magnetically Assisted Chemical Separation (MACS) Process: Determination of the Sorption Capacity of Ferromagnetic Microparticles Coated With Octyl(Phenyl)-N,N-Diisobutylcarbamoylmethylphosphine Oxide (CMPO) Using Neutron Activation Analysis
Made available in DSpace on 2017-07-06T18:48:53Z (GMT). No. of bitstreams: 3 Kaminski_Michael_D_MS.pdf: 46897775 bytes, checksum: 69d8f3318d129fea8c5c53e7fb3e2236 (MD5) Kaminski_Michael_D_MS_ABS.pdf: 1250313 bytes, checksum: 11084fec33d4babb72739a4c2621def5 (MD5) license.txt: 4813 bytes, checksum: …
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Low threshold vertical cavity surface emitting lasers integrated onto Si-CMOS ICs using novel hybrid assembly techniques
… techniques such as fluidic self-assembly and magnetically-assisted statistical assembly. Thermal modeling of these devices has also been preformed, investigating the impact of integration on VCSEL device operation. The results show potential thermal impedance improvements for both single and …
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Fluidization of nanoparticles
… gravity-driven bed, a vibrated bed, a magnetically assisted bed, a rotating bed, and a bed under supercritical conditions. The key parameters affecting fluidization quality are examined in each fluidized bed system. An advanced laser and CCD camera system is used to view agglomerates as …
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Magnetic assisted statistical assembly
… processed Si-CMOS circuits. This method, magnetically assisted statistical assembly (MASA), incorporates past methods such as Fluidic Assisted Self- Assembly (FASA) and Recess Mounting with Monolithic Metalization (RM3). Specifically, MASA addresses the main limitation to the FASA method …
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Laser cooling of rubidium atoms in a magneto-optical trap
… 'motion-induced orientation cooling' and the 'magnetically-assisted sisyphus effect', are described and their role in optical molasses and the magneto-optical trap is discussed. A new study of the polarisation gradients which occur in 3-D monochromatic light fields is presented and quantifies …
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An experimental study of dry particle coating : devices, operating parameters and applications
… of dry particle coating. The devices used are Magnetically Assisted Impaction Coating (MAIC) device, Mechanofusion, and the Hybridizer. MAIC is used to coat fine SiO_2 guest particles onto the surface of larger cornstarch and cellulose host particles. This is done to simultaneously improve the …
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Numerical and experimental investigation of dry particle coating
… such as the Hybridizer, Mechanofusion and Magnetically Assisted Impaction Coating (MAIC) devices for a specific application of improving the humidity resistance of the ground magnesium powder through the dry particle coating technique. It is shown that coating by wax (1 percent by weight) …
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Understanding bulk behavior of particulate materials from particle scale simulations
… inside a conical screen mill (comil) and magnetically assisted impaction mixer (MAIM), both are important particle processing devices. For comil, the mean residence time (MRT), spatial distribution of particles, along with the collision dynamics between particles as well as particle and …
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Experimental and numerical study of flow characteristics and segregation in flow enhanced systems
… method examined is a novel method called the Magnetically Assisted Powder Flow (MAPF) method. In the MAPF, small magnetic particles and powders are placed in a test hopper. A mesh is placed at the bottom of the hopper to hold the magnetic particles while the powder is discharged through the …
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Instrumentation and contrast mechanisms in scanning helium microscopy
… including a new sample stage that uses a magnetically assisted kinematic mount and measurements of the size of the helium source. When using a pinhole to collimate the beam, the quality and resolution of images are largely determined by the performance of the detector. In chapter 4, the …
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Colloidal Processing, Microstructural Evolution, and Anisotropic Properties of Textured Ultra-High Temperature Ceramics Prepared Using Weak Magnetic Fields
… the first time. Textured UHTCs were prepared by magnetically assisted slip casting (MASC) in weak magnetic field (B ~ 0.5 T). Analytical calculations describing the balance of torques acting on the suspended particles suggested that texture would form at such low magnetic fields. The calculations …