Structural colors have the advantage of high reflectance for specific wavelengths, and are generally implemented with SiO2, PE, PS and PMMA. However, existing crystalline structural color films require particle alignment and precise particle uniformity control, making them difficult to manufacture and highly dependent on the viewing angle. Non-close packed structural color films are relatively free of these problems. In this study, based on high refractive index core-shell particles, we propose a mechanochromic strain sensor that can distinguish the direction, position, and degree of deformation. A film was fabricated using silica coated iron oxide core-shell particles having a high refractive index and black color. It has been demonstrated that this film sensor can display a 2D color profile in response to localized weight or strain.
Due to the recent development of detection technology, there is an increasing demand for coating technology that has electromagnetic (EM) wave absorption/reflection characteristics for multi-band including S-band in addition to the existing X-band single wavelength absorption characteristics. In this work, a promising electromagnetic wave absorption and shielding material, MXene/metal oxide composite, was successfully designed and developed. The excellent electromagnetic wave absorption and shielding performance of the composite materials contribute to the synergistic effect of the MXene and the metal oxide, whereby the dielectric properties and electromagnetic wave loss can be easily controlled to obtain appropriate impedance matching conditions and excellent electromagnetic wave dissipation ability.
We introduced carbon-shell with potassium persulfate structure to modify the repulsive force between particles and
minimize scattered light. The reflected structural color varied from blue to red and showed high color purity with high
cycle stability.
We have investigated simulation, fabrication, 2D tungsten PhC for selective emitters of TPV system. Using finite difference time domain simulations, we designed and fabricated a 2D W PhC with cylindrical cavities of diameter from
490 nm to 555 nm, depth 1.5 μm. This structure may have a cutoff near the wavelength of 2.0 μm. A marked enhancement is expected in the emissivity of the 2D W PhC at wavelengths below 2.0μm compared to flat W. By using
standard silicon processing techniques that are simple, efficient and easily scalable, selective emitting structure can be fabricated at lower cost and reduced complexity of individual components.
KEYWORDS: Clouds, 3D image processing, Cameras, 3D displays, Adaptive optics, 3D modeling, Image quality, Digital micromirror devices, Image resolution, Mirrors
A novel 360-degree integral-floating display based on the real object is proposed. The general procedure of the display system is similar with conventional 360-degree integral-floating displays. Unlike previously presented 360-degree displays, the proposed system displays the 3D image generated from the real object in 360-degree viewing zone. In order to display real object in 360-degree viewing zone, multiple depth camera have been utilized to acquire the depth information around the object. Then, the 3D point cloud representations of the real object are reconstructed according to the acquired depth information. By using a special point cloud registration method, the multiple virtual 3D point cloud representations captured by each depth camera are combined as single synthetic 3D point cloud model, and the elemental image arrays are generated for the newly synthesized 3D point cloud model from the given anamorphic optic system’s angular step. The theory has been verified experimentally, and it shows that the proposed 360-degree integral-floating display can be an excellent way to display real object in the 360-degree viewing zone.
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