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Introduction and application of a micro optical platform using metasurfacesMetasurfaces are artificial materials that excel in manipulating perception. Due to the fact that metasurfaces can reduce the size of lenses to one thousandth of traditional lenses, they have attracted great attention as optical components for miniaturization of next-generation virtual reality, augmented reality, and LiDAR ...
Optical parametric oscillator laser tests fibers and components to characterize the spectral response of optical components, thereby providing a competitive advantage in the optical industry.OPO lasers have long been used in complex testing and measurement applications, such as mass spectrometry, photoacoustic imaging, and spectroscopy. Now, these "tunable" pulse lasers are being used to facilitat...
Organic polymer semiconductor materials, due to their unique molecular structure and weak van der Waals interactions, are endowed with the characteristics of soluble processing and easy flexibility, and have potential applications in portable and implantable medical monitoring devices. A highly flexible, skin conformal, and excellent spatial resolution X-ray detector is expected to be integrated w...
1. Research backgroundDirected energy deposition (DED), as an efficient and economical technology in the field of additive manufacturing (AM), is widely used in the manufacturing of metal materials. However, its high heating and cooling rates, as well as significant temperature gradients, often lead to rapid solidification, forming cross layer columnar grains and internal defects, seriously affect...
Liquid crystal elastomers are expected to be applied in displays, sensors, smart devices, and wearable devices.A team from POSTECH University in South Korea, led by Professor Su Seok Choi and Professor Seungmin Nam, has developed a new type of stretchable photonic device that can control the wavelength of light in various directions.This work was carried out by the Department of Electrical Enginee...