Research Progress
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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 -
Scientists Predicted the Dipole Solitons Can be Stably Localized Within A Single Well of The Nonlinear LatticesNonlinear Fractional Schr？dinger Equation (NLFSE) is also adopted in soliton properties investigation recently. The formation and propagation stability of solitons in 1D saturable fractional media with nonlinear lattice schemes are unclear.To set up a phys... Nonlinear Fractional Schr？dinger Equation (NLFSE) is the fundamental equation in nonlinear regimes, such as self‐focusing or self‐defocusing cubic (Kerr) nonlinearity and saturable nonlinearity with either cubic or quintic terms. It is a hallmark physica...Mar 04, 2020