Gao Wenjing

Hefei University of Technology · Department of Computer Science & Technology

CsPbBr 3 @silicone was constructed for fast anion-exchange and RGB color-based sensing of chloride ions in the aqueous phase.

A simple yet powerful approach to obtain structural color is the amorphous assembly of colloidal spheres, which is also referred to as the amorphous photonic structure or photonic glasses (PGs). Additionally, the functionalization of the colloidal spheres as building blocks can further endow the resulting PGs with multifunctions. Herein, we have de...

Large-scale, densely distributed fiber Bragg grating (FBG) arrays have a wide range of applications in industrial safety surveillance. Due to the limitation of inscription pulse-width, most grating interrogators have difficulties distinguishing each grating when the spacing between adjacent gratings reduces to specific small values. Multiple gratin...

Fiber Bragg grating (FBG) array, consisting of a number of sensing units in a single optical fiber, can be practically applied in quasi-distributed sensing networks. Serious signal crosstalk occurring between large-serial of identical FBGs, however, has limited the further increase in the number of sensing units, thus restricting applications only...

On the basis of intensity modulation, a vibration sensor using a tapered photonic crystal fiber (PCF) is demonstrated. The fiber is a solid-core PCF with a central air hole embedded in the core region. The addition of the air-hole initiates the core/cladding intermodal coupling, and consequently, modulates the output light intensity when the fiber...

Purpose: To retrospectively explore the utilization of MR diffusion kurtosis imaging (DKI) in predicting prognosis of the patients with high-grade gliomas. Materials and methods: Thirty-three consecutive patients with cerebral gliomas underwent pretreatment DKI and diffusion-weighted imaging examination on a 3.0-T MR scanner. Diffusion parameter...

Multiple sclerosis (MS) and neuromyelitis optica spectrum disorder (NMOSD) are common demyelinating disorders of the central nervous system. The etiology and pathogenesis of MS and NMOSD remain unclear. The pathogenesis of these two diseases involves a genetic predisposition as well as environmental factors. NMOSD sometimes co-exists with Sjögren's...

Sampled fiber grating is a special superstructure fiber Bragg grating with a wide range of applications in many fields. In this work, based on drawing tower in-line fabrication system, a new preparation method of the sampled fiber grating is proposed and experimentally demonstrated. Experimental result shows that the obtained sampled fiber gratings...

On-line fabricated fiber Bragg grating (FBG) array and its sensing potentials have attracted plenty of attention in recent years. In this paper, FBG arrays are written on-line on a two-mode fiber, and this two-mode fiber Bragg grating (TM-FBG) is further experimentally investigated for temperature and curvature sensing. The responses of this sensor...

Genetic variants near the tumor necrosis factor-α-induced protein 3 gene (TNFAIP3) at the chromosomal region 6q23 demonstrated significant associations with multiple autoimmune diseases. The signals of associations have been explained to the TNFAIP3 gene, the most likely causal gene. In this study, we employed CRISPR/cas9 genome-editing tool to gen...

Background Radiotherapy is among the commonly applied treatment options for glioma, which is one of the most common types of primary brain tumor. To evaluate the effect of radiotherapy noninvasively, it is vital for oncologists to monitor the effects of X-ray irradiation on glioma cells. Preliminary research had showed that PKC-ι expression correla...

Tumor necrosis factor-alpha-induced protein 3 (TNFAIP3) is a negative regulator of NF-κB activity. We previously reported that the paired tandem polymorphic dinucleotides TT > A (rs148314165, rs200820567 of TNFAIP3) conferred the risk for systemic lupus erythematosus (SLE) in European and Korean populations. We investigated the genetic association...

A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper.

Background: Magnetic resonance (MR) spectroscopy (1H-MRS) has been demonstrated to be useful in grading glioma, but the utility in assessing cellular proliferation activity and prognosis correlated with the expression of minichromosome maintenance protein 2 (MCM2) has not been reported. Purpose: To explore the correlation between proton MR spect...

Naturally occurring functional variants (rs148314165 and rs200820567, collectively referred to as TT>A) reduce the expression of the tumor necrosis factor α-induced protein 3 ( TNFAIP3 ) gene, a negative regulator of NF-κB signaling, and predispose individuals to autoimmune disease. In this analysis, we conducted a genetic association study of the...

Hepatitis B virus (HBV) has been suspected to contribute to several autoimmune diseases, including Sjögren's syndrome (SS), although the exact mechanism is unknown. The 2'-5' oligoadenylate synthetase (OAS1) is one of the most important components of the immune system and has significant antiviral functions. We studied a polymorphism rs10774671 of...

Because of the merits of non-destruction, high speed, and high sensitivity, optical techniques have been developed for experimental mechanics and optical measurement. In commercial optical systems, the speed performance becomes more important and real-time systems are pursued. Among many acceleration methods, using parallel computing hardware is pr...

Based on the windowed Fourier transform, the windowed Fourier ridges (WFR) algorithm and the windowed Fourier filtering algorithm (WFF) have been developed and proven effective for fringe pattern analysis. The WFR algorithm is able to estimate local frequency and phase by assuming the phase distribution in a local area to be a quadratic polynomial....

Windowed Fourier ridge algorithm has been proposed for fringe pattern analysis. However, this algorithm produces a bias in the retrieved phase. In this paper, a method is proposed to correct the phase bias. The second order derivatives of the phase are estimated by using two frequency points and then used to compensate the phase. By testing the met...

Extracting phase distribution from arbitrary phase-shifted fringe patterns, if possible, is very useful in phase-shifting interferometry. The advanced iterative algorithm (AIA) is introduced and the windowed Fourier ridges and least squares fitting (WFRLSF) is proposed. Both algorithms are sensitive to noise, which limits their applications to almo...

Our recent work on windowed Fourier transform for fringe patterns analysis is reviewed, including the theoretical analyses of the algorithms, windowed Fourier filtered and quality‐guided phase unwrapping, denoising and phase extraction techniques for a single closed fringe pattern, and algorithm acceleration using multicore computers and graphics p...

Phase unwrapping refers to the reconstruction process of a continuous phase distribution from a wrapped phase map in optical interferometers, fringe projection systems and synthetic aperture radars. Usually, phase unwrapping (PU) is challenging due to speckle noise, atmosphere interference, and long discontinuities. Two dimensional phase unwrapping...

A windowed Fourier filtered and quality guided (WFF-QG) phase unwrapping algorithm was proposed recently [Appl. Opt. 47, 5420-5428 (2008)], based on the windowed Fourier transform [Appl. Opt. 47, 5408-5419 (2008)] where the phase is assumed to be locally quadric. We consider a locally higher order polynomial phase. After the phase is filtered and u...

In optical interferometers, fringe projection systems, and synthetic aperture radars, fringe patterns are common outcomes and usually degraded by unavoidable noises. The presence of noises makes the phase extraction and phase unwrapping challenging. Windowed Fourier transform (WFT) based algorithms have been proven to be effective for fringe patter...

In the process of measurements such as optical interferometry and fringe projection, an important stage is fringe pattern analysis. Many advanced fringe analysis algorithms have been proposed including regularized phase tracking (RPT), partial differential equation based methods, wavelet transform, Wigner–Ville distribution, and windowed Fourier tr...

Electronic speckle pattern interferometry is one of the methods measuring the displacement on object surfaces in which fringe patterns need to be evaluated. Noise is one of the key problems affecting further processing and reducing measurement quality. We propose an application of coherence-enhancing diffusion to fringe-pattern denoising. It smooth...

A windowed Fourier ridges (WFR) algorithm and a windowed Fourier filtering (WFF) algorithm have been proposed for fringe pattern analysis and have been demonstrated to be versatile and effective. Theoretical analyses of their performances are of interest. Local frequency and phase extraction errors by the WFR and WFF algorithms are analyzed in this...

We propose a windowed Fourier-filtered and quality-guided phase-unwrapping algorithm that is an extension and improvement of our previous phase-unwrapping algorithm based on windowed Fourier transform [Opt. Laser Technol.37, 458 (2005), Key Eng. Mater.326-328, 67 (2006). First, the filtered amplitude is used as a real-valued quality map, rather tha...

Fringe patterns produced by electronic speckle pattern interferometry (ESPI) are evaluated to measure the deformation on object surfaces. Noise is one of the key problems affecting further processing of the fringe patterns and reduces the final measurement quality. This paper presents a partial differential equations (PDEs) based coherence enhancin...

In recent years, many algorithms were proposed for fringe pattern analysis and phase unwrapping including median filter, Fourier transform, windowed Fourier transform and wavelet transforms. However most of them are computationally expensive, which may be a barrier for real-time analysis for fringe pattern. In this paper an FPGA-based system and op...

A novel frequency-shifting method for phase retrieval from fringe patterns is proposed. It needs two fringe patterns. In the second fringe pattern, a low frequency carrier is introduced. The low carrier frequency is used to open only fringe patches near critical points rather than the whole fringe pattern. The windowed Fourier ridges algorithm is u...

Phase unwrapping is a usually necessary step in optical interferometry in order to construct a continuous phase distribution. A straightforward strategy is to filter the noise effectively, followed by a simple phase unwrapping process. A windowed Fourier filter is proposed to realize this strategy, which has the following properties: (i) it removes...