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郭新闻论文成果：Defect-Enriched N,O-Codoped Nanodiamond/Carbon Nanotube Catalysts for Styrene Production via Dehydrogenation of Ethylbenzene
nanodiamond/carbon nanotube hybrid nitrogen and oxygen codoping structural defect direct dehydrogenation styrene production
2023/3/6
Owing to the unique structure and enriched surface ketonic carbonyl group, nanodiamond (ND) shows excellent catalytic performance for dehydrogenation reaction. However, the agglomeration of predispers...
DEEP LEARNING AND IMAGE PROCESSING FOR AUTOMATED CRACK DETECTION AND DEFECT MEASUREMENT IN UNDERGROUND STRUCTURES
Deep Learning Automated Crack Detection Photographic Tunnelling Surveys
2018/6/4
This work presents the combination of Deep-Learning (DL) and image processing to produce an automated cracks recognition and defect measurement tool for civil structures. The authors focus on tunnel c...
Robust registration of defect set by local consistency of point data
Registration defect inspection robustness consistency
2015/8/25
A novel registration algorithm using Local consistency of point dispersion (LCPD) is proposed, which is based on a new type of measure of consistency between two sets of point data. It is expected to ...
Tunable Reflection Bands and Defect Modes in One-Dimensional Tilted Photonic Crystal Structure
Photonic Crystal Structure Photonic Band Gap (PBG) Omnidirectional Reflector Tilted PC Structure De-fect Modes
2013/1/30
We show theoretically that range of reflection bands and defect modes inside the band gap can be tuned by using a one-dimensional tilted photonic crystal (TPC) structure. A TPC structure is similar to...
Compressive properties of homemade carbon fiber composite laminates with delamination defect
homemade carbon fiber composite compressive strength virtual crack closure technique element simulation
2014/5/19
Large numbers of aircraft composite structures were researched, and the distribution of delamination sizes and though thickness positions in the composite laminates were investigated. An experiment wa...
Mid-IR-laser microscopy as a tool for defect investigation in bulk semiconductors
Mid-IR-laser microscopy defect investigation bulk semiconductors
2011/9/9
A non-destructive optical technique described in this paper is an effective new tool for the investigation of defects in semiconductors. The basic instrument for this technique—a mid-IR-laser microsco...
Influence of Photoexcitation Depth on Luminescence Spectra of Bulk GaAs Single Crystals and Defect Structure Characterization
Photoexcitation Luminescence Spectra Bulk GaAs Single Crystals Defect Structure Characterization
2011/9/9
The results of investigation of bulk GaAs photoluminescence are presented taken from near-surface layers of different thicknesses using for excitation the light with the wavelengths which are close bu...
Influence of photoexcitation depth on luminescence spectra of bulk GaAs single crystals: application to defect structure characterization
Photoexcitation Luminescence Spectra depth Bulk GaAs Single Crystals Defect Structure Characterization
2011/9/9
The results of investigation of bulk GaAs photoluminescence are presented taken from near-surface layers of different thicknesses using for excitation the light with the wavelengths which are close bu...
Optical beam-induced scattering mode of mid-IR laser microscopy: a method for defect investigation in near-surface and near-interface regions of bulk semiconductors
Optical beam-induced scattering mode mid-IR laser microscopy
2011/9/9
This paper presents a new technique of optical beam-induced scattering of mid-IR-laser radiation, which is a special mode of the recently developed scanning
mid-IR-laser microscopy. The technique in ...
Impact of chirp on spectral recoil of solitons in a defect-core photonic crystal fiber with two zero-dispersion wavelengths
Pulse propagation temporal solitons Photonic crystal fibers
2015/5/22
Increasing input chirp decelerates (accelerates) the spectral recoiling process across a negative dispersion slope for pulses experiencing normal (anomalous) dispersion. A realistic defect-core photon...
Nonlinearity-controllable all-optical logic gates based on broadband defect mode
photonic crystals all-optical logic gates broadband defect mode nonlinearity
2011/5/9
To avoid the adverse effect of unstable nonlinear progress on the design of all-optical logic gates,
the broadband defect mode of one-dimensional photonic crystal with dual-defects has been studied.
...
Engineering a light-emitting planar defect within three-dimensional photonic crystals
photonic crystals photoluminescence planar defect
2010/1/19
Sandwich structures, constructed from a planar defect of rhodamine-B (RhB)-doped titania (TiO2) and two photonic crystals, were synthesized via the self-assembly method combined with spin-coating. The...
Defect Reconstruction of Submarine Oil Pipeline from MFL Signals Using Genetic Simulated Annealing Algorithm
Oil pipeline Defect reconstruction Genetic algorithm Simulated annealing
2009/7/27
This paper presents a genetic simulated annealing algorithm (GSAA)-based inverse algorithm for reconstructing the shape of a two-dimensional defect from the magnetic flux leakage (MFL) signals. In the...
Research on Recognition Algorithm of Offshore Oil Pipeline Defect Inspection Based on Magnetic Flux Leakage Method
Magnetic flux leakage Pipeline inspection WBF neural network Multiresolution
2009/7/24
Pipeline safety evaluation is an important issue in the industry. Based on magnetic flux leakage (MFL) method, this paper presents an automated inspection device to inspect pipeline defects, analyzes...
Photonic Crystal Fiber with Ring-Core Hollow-Defect for Evanescent Wave Chemical Sensing
Photonic Crystal Fiber Ring-Core Hollow-Defect Evanescent Wave Chemical Sensing
2015/7/16
A doped-ring hollow-defect structure is proposed in photonic crystal fiber to acheive a higher evanescent field. Vectorial modal analysis with finite element method and experimental results confirmed ...