Research Progress
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Imaging Correlography Using Ptychography for Long-range Space Targets ImagingImaging correlography is an effective method for long-distance imaging, it recovers an object using only the knowledge of the Fourier modulus without the needs of phase information. A research team led by Prof. Dr. SONG Zongxi from Xi'an Institute of Optics... The long-range space targets imaging, such as middle-and-high altitude Earth satellites and space debris above 10,000 km, is important for space scientific research. To obtain clear images, the resolution of the imaging system is required to reach the milli...Mar 16, 2020 -
Scientists Build Novel Methods to Enhance the Accuracy of Remote Sensing Scene ClassificationDeep feature-based methods have received extensive attention and become the mainstream research in the remote sensing scene classification (RSSC) task. A new mothed, the end-to-end feature aggregation CNN (FACNN), is proposed to alleviate the problem that t... Remote sensing scene classification (RSSC) refers to inferring semantic labels based on the content of the remote sensing scenes. The development of the RSSC technology can contribute to target detection, change detection. Remote sensing scenes contain mult...Mar 11, 2020 -
Scientists Successfully Grows Stacking Faults Free GaN on SapphireA research team led by Dr. WANG Jie from Xi'an Institute of Optics and Precision Mechanics (XIOPM) of the Chinese Academy of Sciences (CAS) presents a unique growth technology to eliminate the stacking faults (SFs) in semipolar GaN grown on sapphire. Based ... Fundamental issues within conventional c-plane emitter materials, including efficiency droop, green gap, and blue shift, are limiting the development of solid-state lighting in both cost and performance. To address these issues, researchers and experts have...Mar 10, 2020 -
Scientists Prevent Critical Collapse of Higher-order SolitonsSelf-trapped modes suffer critical collapse in two-dimensional cubic systems. To overcome such a collapse, linear periodic potentials or competing nonlinearities between self-focusing cubic and self-defocusing quintic nonlinear terms are often introduced. A... Solitons are stable objects balanced by diffraction or dispersion and nonlinearity. A fundamental challenge in this field is the stabilization of solitons in multidimensional coordinates, since the 2D and 3D solitons in free space are always unstable and un...Mar 06, 2020 -
Scientists Solved Simultaneous Optical Trapping and Imaging In The Axial Plane For Light-matter InteractionOptical trapping has become a powerful tool in numerous fields such as biology, physics, and chemistry. But, in conventional optical trapping systems, trapping and imaging share the same objective lens, confining the region of observation to the focal plane... Optical trapping has become a powerful tool in numerous fields such as biology, physics, chemistry. In light-matter interaction, transfer of optical linear momentum and angular momentum gives rise to optical forces acting on the illuminated object, thus ena...Mar 05, 2020