Scientists Build Novel Methods to Enhance the Accuracy of Remote Sensing Scene Classification

Deep 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 the information of semantic labels cannot be explored to faci...

Scientists Successfully Grows Stacking Faults Free GaN on Sapphire

A 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 on this breakthrough, the dream of producing device-quality,...

Scientists Prevent Critical Collapse of Higher-order Solitons

Self-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 research team led by Prof. Dr. ZENG Jianhua from XIOPM prop...

Scientists Solved Simultaneous Optical Trapping and Imaging In The Axial Plane For Light-matter Interaction

Optical 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. A research team led by Prof. Dr. YAO Baoli from XIOPM deve...

Scientists Predicted the Dipole Solitons Can be Stably Localized Within A Single Well of The Nonlinear Lattices

Nonlinear 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 physical model under the nonlinear fractional Schr？dinger equat...

Scientists Experimentally Confirmed the Relationship Between Phase Noises and Harmonic Frequencies

passively mode-locked fiber lasers (MLLs) have rapidly developed and been widely used in many application fields.Over the past decades, theoretical analysis models related to noise characterization have been built. However, no detailed study on timing jitter and phase noise at different harmonics of a passively MLL ...

Scientists Reveal a Methodology for Highly Cost-Efficient Large-Scale Uniform Laminar Plasma Jet Array

Developing cost-efficient large-scale uniform plasma jets represents a significant challenge for high performance in material processing and plasma medicine. Here, a V-I characteristic modulation approach is proposed by a research group of CAS to reduce the discharge power and increase the plasma scale and chemical ...

Xie Peng’s research team predicted that Influences of group velocity dispersion on ultrafast pulse shaping in time lens