摘要:
A three-axis magnetic field sensing device, a magnetometer, and methods of fabricating and testing are presented. The magnetometer comprises a plurality of sloped surfaces. A plurality of magnetic sensing units is disposed on the slopes. A magnetic field can be measured by the sensing units. Each of the three orthogonal-axis components of the magnetic field, a Euclidean vector, can then be solved by using a simple algorithm as an expression of the sensing unit measurement values and slope angles. Polarization, testing and characterization of the device could be done by applying a magnetic field along a common axis to all sensing units, along which each sensing unit has sensitivity.
摘要:
Methods involve a combination of polyelectrolyte multilayer (PEM) coating or silane self assembly on a substrate; microcontact printing; and conductive graphite particles, especially size controlled highly conductive exfoliated graphite nanoplatelets. The conductive graphite particles are coated with a charged polymer such as sulfonated polystyrene. The graphite particles are patterned using microcontact printing and intact pattern transfer on a substrate that has an oppositely-charged surface. The method allows for conductive organic patterning on both flat and curved surfaces and can be used in microelectronic device fabrication.
摘要:
A perching mechanism is developed which comprises shape-memory components capable of undergoing motions that render the perching effect. This mechanism can provide unmanned air vehicles with versatile, bird-like landing capabilities on surfaces of different types and orientations.
摘要:
The present invented mechanism comprises more than two (legs) with phase difference (like polygon-shape, ellipse-shape, and etc) between their rotation angles to produce pre-loading for improved adhesion. Two rigid plates covered with adhesives are attached to each phase difference wheel. Each plate connects to the wheels via a hinge embodying a torsional spring, which forces the plate back to its original position after each contact with surface. The phase difference wheels are made of elastic materials for application of controlled pre-loads at contact surfaces during locomotion. The difference between height and width of each wheel as well as the elastic properties of the materials determine the pre-load pressure applied during locomotion. The pre-load pressure is not strongly dependent on the orientation of locomotion. This enables locomotion in vertical, inclined and even upside-down orientation and also in the non-gravity environment.
摘要:
This invention relates to appliqué film for paint replacement application on aircraft and other surfaces. This system comprises a carrier backing film with patterned hybrid pressure sensitive adhesives (PSAs), with discrete silicone phase within a continuous acrylic phase. The patterned hybrid PSAs exhibit a peel strength between 2 and 8 pound per in (pli) in the temperature range of −65° F. to 285° F. This appliqué film also provides high levels of stability under exposure to weathering effects and fluids applied to exterior aircraft surfaces.
摘要:
Methods involve a combination of polyelectrolyte multilayer (PEM) coating or silane self assembly on a substrate; microcontact printing; and conductive graphite particles, especially size controlled highly conductive exfoliated graphite nanoplatelets. The conductive graphite particles are coated with a charged polymer such as sulfonated polystyrene. The graphite particles are patterned using microcontact printing and intact pattern transfer on a substrate that has an oppositely-charged surface. The method allows for conductive organic patterning on both flat and curved surfaces and can be used in microelectronic device fabrication.
摘要:
The present invention describes a process for saccharification of lignocelluloses to sugars using whole microbial cells, which are enriched from cultures inoculated with paper mill waste water, wood processing waste and soil. A three-member bacterial consortium is selected as a potent microbial inocula and immobilized on inedible plant fibers for biomass saccharification. The present invention further relates the design of a dual bioreactor system, with various biocarriers for enzyme immobilization and repeated use. Sugars are continuously removed eliminating end-product inhibition and consumption by cell.
摘要:
Methods involve a combination of polyelectrolyte multilayer (PEM) coating or silane self assembly on a substrate; microcontact printing; and conductive graphite particles, especially size controlled highly conductive exfoliated graphite nanoplatelets. The conductive graphite particles are coated with a charged polymer such as sulfonated polystyrene. The graphite particles are patterned using microcontact printing and intact pattern transfer on a substrate that has an oppositely-charged surface. The method allows for conductive organic patterning on both flat and curved surfaces and can be used in microelectronic device fabrication.
摘要:
This invention is directed to the preparation of a molded compound. The molded compound is made by the process which contains the steps of (1) mixing a. an unsaturated polymer resin which has been synthesized from a natural triglyceride oil containing an effective amount of acid groups in order to thicken with metal ions b. a polymerizable monomer, c. a thickening agent to form a polymerizable material, (2) polymerizing said polymerizable material in a mold to form a molded compound. The invention further relates to a molded compound.
摘要:
Provided is a method of making durable hydrophilic and hierarchical structures containing nano and micro features used as dry adhesives. The method includes introduction of hydrophilic, nanostructured features on the micro-scale tips of fibrillar arrays through UV/Ozone (UVO) and oxygen plasma treatment; the method also includes further coating of the hierarchical structure with a polyelectrolyte via electrostatically-driven self-assembly to improve the hydrophilic stability of the treated fibril tip surfaces.