CENTER FOR ADVANCED META-MATERIALS

Disclosed is a measuring device for measuring the height of a foreign object in a pipe comprising an ultrasound transmission unit including an ultrasound generator disposed in a first area of an outer surface of a pipe through which fluid passes, and generating ultrasound, and a transmission medium disposed between the ultrasound generator and the first area to transmit the ultrasound to the first area, an ultrasound receiving unit including a receiving medium unit disposed in the second area of the outer surface of the pipe, and consisting of an ultrasound receiver, and a receiving medium disposed between the ultrasound receiver and the second area, and a signal measurer connected to the ultrasound receiver for measuring the ultrasound signal received by the ultrasound receiver or a signal corresponding thereto.

Disclosed herein are a non-rigid pad for device transfer, which allows uniform contact pressure to be applied between multiple devices and a target substrate to which the devices are to be transferred, a method of manufacturing the same, and a non-rigid pad group for device transfer including the same. The non-rigid pad includes: a base plate; and multiple pillars each protruding from one surface of the base plate with one end thereof connected to the one surface of the base plate, the pillars being bent and deformed upon application of external force, wherein the non-rigid pad is disposed between a transfer film to which multiple devices to be transferred to a target substrate are adhesively attached and a pressing unit providing pressing force to transfer the multiple devices to the target substrate, the non-rigid pad being bent and deformed upon application of pressing force by the pressing unit to allow uniform contact pressure to be applied between the multiple devices and the target substrate.

An exemplary embodiment attempts to provide a full transmission device for wide-angle mode conversion of elastic waves which can realize mode conversion of elastic waves with high energy efficiency over a wide range of angle of incidence by a single filter. A full transmission device for wide-angle mode conversion of elastic waves includes an incidence medium where elastic waves including longitudinal waves and transverse waves enter obliquely within a preset wide angle range, a transmission medium that transmits elastic waves when the elastic waves enter the transmission medium within the wide angle range through the incidence medium, and a filter that is formed so as to satisfy a wide-angle mode conversion full-transmission condition when the filter is interposed between the incidence medium and the transmission medium, such that elastic waves entering the incidence medium within the wide angle range are completely converted without being reflected so as to be transmitted to the transmission medium.

A thin film thickness measuring apparatus includes: an ultrasonic retroreflector that is provided under a test object formed in the shape of a thin film and retroreflects an ultrasonic wave incident through the test object; an ultrasonic wave input portion that is provided on one side of the test object and inputting an ultrasonic wave to one side of the test object; and a measurement portion that is connected to the ultrasonic wave input portion and measures an arrival time of the ultrasonic wave reflected through the test object.

A thin film thickness measuring apparatus includes: an ultrasonic retroreflector that is provided under a test object formed in the shape of a thin film and retroreflects an ultrasonic wave incident through the test object; an ultrasonic wave input portion that is provided on one side of the test object and inputting an ultrasonic wave to one side of the test object; and a measurement portion that is connected to the ultrasonic wave input portion and measures an arrival time of the ultrasonic wave reflected through the test object.

An embodiment of the present invention provides a transfer film that may be used for both a picking process and a placing process of an element, a transfer method using the transfer film, and an electronic product manufactured using the same. Here, the transfer film according to an embodiment of the present invention includes a base part, an adhesion part, and a first protrusion part. The adhesion part is provided on one surface of the base part, and at least part of the first protrusion part is formed and protruded on one surface of the base part to be accommodated inside the adhesion part, and the thickness increases toward the first direction parallel to the surface of the base part. The first protrusion part is partitioned into a first region including a relatively thick portion of the first protrusion part and a second region including a relatively thin first protrusion part and having weaker adhesive force than the first region, and the element is picked while the first region is lifted first in the picking process, while the element is placed while the second region is lifted first in the placing process.

In a photocatalytic facial mask and a method for manufacturing the photocatalytic facial mask, the facial mask includes an inner layer, an outer layer, and a functional filter layer. The functional filter layer is disposed between the inner layer and the outer layer. The functional filter layer includes a photoactive layer, the photoactive layer includes a photocatalytic fiber having a core-shell structure, and the core-shell structure includes a core having a polymer fiber and a shell having a photocatalyst disposed at the core.

An infrared adaptive transparent camouflage film includes a substrate, a graphene layer, an electrode layer and an ion gel layer. The substrate has dielectric. The graphene layer is disposed on the substrate and stacked in multiple layer. The electrode layer is disposed over the substrate and is spaced apart from the graphene layer. The ion gel layer is disposed over the graphene layer and the electrode layer, or disposed between the graphene layer and the electrode layer, to dope the graphene layer electrically.

Provided are a device and method for designing a material using deep learning. The method includes training a decoder which derives wave properties from given information on a material in advance, training an autoencoder including the decoder and an encoder which will be trained to derive information on a material from given wave properties, and inputting targeted wave properties to the trained encoder to acquire information on a material satisfying the input wave properties.

A 5G band transmissive body includes a base substrate and a pattern portion, wherein the pattern portion is provided on one side of the base substrate and transmits the 5G communication frequency band, and includes a conductive pattern formed by providing a conductive material on a plurality of virtual grid cells arranged in the horizontal and vertical directions, and a plurality of unit areas divided by a virtual vertical line and a virtual horizontal line, which are orthogonally crossing at center of the pattern portion, and a pair of virtual diagonal lines and crossing each other at the center and passing through the corners of the pattern portion, and the conductive pattern is symmetrical with respect to each of the vertical line, horizontal line, or diagonal line in the neighboring unit areas among the plurality of unit areas.