213 results about "Cylindrical array" patented technology

Methods for fabricating sublithographic, nanoscale microstructures in line arrays utilizing self-assembling block copolymers, and films and devices formed from these methods are provided.

A roofing membrane retainer is provided having a cylindrical plate. The cylindrical plate has a central aperture for receiving a fastener. The plate also includes a pair of concentric inner and outer raised reinforcing ribs and a plurality of scoop-shaped projections. The scoop-shaped projections extend downwardly from the plate in concentric inner and outer cylindrical arrays. The inner cylindrical array of projections and the outer cylindrical array of projections are radially outward of the inner rib and the outer rib, respectively. The projections each comprise a scoop with a base periphery having an open mouth edge and a remaining peripheral portion contiguous with the plate. The projections in each array are spaced equidistance about the plate. The mouth edge of adjacent projections are oriented in alternating radial inward and outward directions.

An array coil for sensing signals in magnetic resonance experiments incorporates the traditional loop-butterfly array elements at spaced positions along an axis of the sample with additional stacked twisted loops and / or twisted butterfly elements. The twisted loop and twisted butterfly elements are centered along between the standard loop-butterfly array elements. The twisted array elements are naturally isolated from both the loop and butterfly. Alternatively, for a two dimensional mesh array of loop elements, additional twisted loop array elements are added with both longitudinal and transverse orientations, again centered between loop elements. The goal is to allow separation of loop and / or butterfly elements of linear (Spine), 2D planar arrays (Cardiac) or cylindrical arrays of curved array elements (Head), for improved parallel MRI capabilities such as the SENSE or SMASH techniques, but to recover the SNR lost in between the elements and improve the g-factor of the total array with additional orthogonal array elements.

A surveillance apparatus (100) is provided, said apparatus including a linear sub-array (101) of N omnidirectional transmitter elements (103) and a planar sub-array (102) of M receiver elements (104). A plurality of the transient elements (105) are generated by separating out at each of the receivers (104) the signals transmitted from the antenna elements (103) of the transmitter sub-array (101). This allows the geometry of each path (from each transmitter antenna element, to the point being imaged and back to the receiver antenna elements) to be converted to a delay or phase shift to focus on the particular point being imaged. The transient elements (105) form a cylindrical array (106) at the mid points between transmitter and receiver sub-arrays. Such a configuration enables a full 360 degrees of cover in azimuth and typically + / −60 degrees in elevation.

Provided is a hot-pressing method for processing a large-size super-hydrophobic cylindrical array capable of bouncing in a droplet and cake shape. The method comprises the steps of: preparing a hot-pressing mold, wherein a metal substrate array through-hole structure which has a diameter of 0.8-1.25 mm, column spacing of 0.25 mm, a depth of 0.6-1.0 mm is processed, grinding, washing and blow-drying are conducted on the metal substrate array through-hole structure to obtain the hot-pressing mold; conducting hot pressing, wherein a polymer material is applied to the hot-pressing mold, vacuum hotpressing is conducted on the hot-pressing mold with the polymer material, and the hot-pressing mold with the polymer material is cooled to a room temperature after taken out; removing the mold, wherein after the excessive polymer material flowing out of through holes is cut off, the hot-pressing mold is removed, and a polymer cylindrical array can be obtained; and conducting super-hydrophobic treatment, wherein the obtained cylindrical array is sprayed with a mixed solution to obtain the super-hydrophobic cylindrical array, and the mixed solution is a fluorosilane ethanol solution which contains nano TiO2 particles. The method has the advantages of being simple and easy to operate and low in cost, multiple kinds of materials can be selected, the materials and templates can be reused, andthe size of the prepared cylindrical array is large; besides, industrial processing and large surface of the super-hydrophobic cylindrical array capable of bouncing in the droplet and cake shape canbe effectively realized.