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Near-infrared light-controlled tunable grating based on graphene/elastomer composites EI SCIE Scopus
期刊论文 | 2018 , 76 , 117-124 | OPTICAL MATERIALS
WoS CC Cited Count: 1
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Abstract :

A near-infrared (nIR) light actuated tunable transmission optical grating based on graphene nanoplatelet (GNP)/polydimethylsiloxane (PDMS) and PDMS is proposed. A simple fabrication protocol is studied that allows integration of the grating with the actuation mechanism; both components are made from soft elastomers, and this ensure the tunability and the light-driven operation of the grating. The resulting grating structure demonstrates continuous period tunability of 2.7% under an actuation power density of 220 mW cm(-2) within a period of 3 s and also demonstrates a time-independent characteristic. The proposed infrared activated grating can be developed for wireless remote light splitting in bio/chemical sensing and optical telecommunications applications. (C) 2017 Elsevier B.V. All rights reserved.

Keyword :

Graphene Light-driven GNP/PDMS Tunable optics Grating

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GB/T 7714 Wang, Fei , Jia, Shuhai , Wang, Yonglin et al. Near-infrared light-controlled tunable grating based on graphene/elastomer composites [J]. | OPTICAL MATERIALS , 2018 , 76 : 117-124 .
MLA Wang, Fei et al. "Near-infrared light-controlled tunable grating based on graphene/elastomer composites" . | OPTICAL MATERIALS 76 (2018) : 117-124 .
APA Wang, Fei , Jia, Shuhai , Wang, Yonglin , Tang, Zhenhua . Near-infrared light-controlled tunable grating based on graphene/elastomer composites . | OPTICAL MATERIALS , 2018 , 76 , 117-124 .
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Correlation-coefficient based auto-focusing algorithm for focus detection in shape measurement using two-source digital holographic interferometry EI SCIE Scopus
期刊论文 | 2018 , 29 (8) | MEASUREMENT SCIENCE AND TECHNOLOGY
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Abstract :

In this study, a simple auto-focusing algorithm to determine the focus plane in shape measurement using two-source digital holographic interferometry is presented. The wave fields corresponding to two illumination angles are reconstructed, and the correlation coefficient between two wave fields is calculated. This parameter is affected by the defocusing of the reconstruction image. Larger distances between the reconstruction plane and focus plane lead to smaller correlation coefficient. Because this relationship is independent of the strength of the feature patterns of a specimen, the focus plane can be automatically determined as the location of the maximum correlation coefficient without any artificial determination. Finally, the shape can be measured using two reconstructed wave fields of different illumination angle. Experiments have been conducted to demonstrate the feasibility of the proposed algorithm.

Keyword :

holographic interferometry correlation-coefficient auto-focusing

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GB/T 7714 Dong, Jun , Jia, Shuhai , Jiang, Chao . Correlation-coefficient based auto-focusing algorithm for focus detection in shape measurement using two-source digital holographic interferometry [J]. | MEASUREMENT SCIENCE AND TECHNOLOGY , 2018 , 29 (8) .
MLA Dong, Jun et al. "Correlation-coefficient based auto-focusing algorithm for focus detection in shape measurement using two-source digital holographic interferometry" . | MEASUREMENT SCIENCE AND TECHNOLOGY 29 . 8 (2018) .
APA Dong, Jun , Jia, Shuhai , Jiang, Chao . Correlation-coefficient based auto-focusing algorithm for focus detection in shape measurement using two-source digital holographic interferometry . | MEASUREMENT SCIENCE AND TECHNOLOGY , 2018 , 29 (8) .
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Surface shape measurement by multi-illumination lensless Fourier transform digital holographic interferometry EI SCIE Scopus
期刊论文 | 2017 , 402 , 91-96 | OPTICS COMMUNICATIONS | IF: 1.887
WoS CC Cited Count: 2
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Abstract :

This paper presents a multi-illumination lensless Fourier transform digital holographic interferometry method for surface shape measurement. In this method, the interference phases with different effective synthetic wavelengths are obtained by tilting the illumination angle several tunes, and all are wrapped. A Fourier-transform demodulation algorithm employing all these wrapped phases simultaneously is used to determine the object surface shape. No phase unwrapping procedure is required, and the shape information of each point is calculated independently, thereby offering great flexibility for measuring objects with discontinuities surface, such as holes, steps and gaps. Experimental results demonstrate the validity of the principle. (C) 2017 Elsevier B.V. All rights reserved.

Keyword :

Lensless digital holography Interferometry Shape measurement Multi-illumination

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GB/T 7714 Dong, Jun , Jia, Shuhai , Jiang, Chao . Surface shape measurement by multi-illumination lensless Fourier transform digital holographic interferometry [J]. | OPTICS COMMUNICATIONS , 2017 , 402 : 91-96 .
MLA Dong, Jun et al. "Surface shape measurement by multi-illumination lensless Fourier transform digital holographic interferometry" . | OPTICS COMMUNICATIONS 402 (2017) : 91-96 .
APA Dong, Jun , Jia, Shuhai , Jiang, Chao . Surface shape measurement by multi-illumination lensless Fourier transform digital holographic interferometry . | OPTICS COMMUNICATIONS , 2017 , 402 , 91-96 .
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Digital holographic metrology based on multi-angle interferometry EI SCIE Scopus
期刊论文 | 2016 , 41 (18) , 4301-4304 | OPTICS LETTERS | IF: 3.416
WoS CC Cited Count: 2
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Abstract :

We propose a multi-angle interferometry method for digital holographic metrology. In an application of three-dimensional (3D) reconstruction, the hologram corresponding to a different illumination angle is recorded as the illumination angle with a single wavelength tilted at regular intervals by an electronically controlled rotating stage. A Fourier-transform-based axial depth scanning algorithm formed by the reconstructed phase is used to obtain the height point by point over the whole field of view. Hence, the 3D reconstruction can be obtained effectively; even the object has large depth discontinuities resulting from the difficulty of the phase unwrapping. Due to a monochrome source only being used, the method is available for objects with wavelength-dependent reflectivity and those that are free of chromatic aberration caused by the different wavelengths. (C) 2016 Optical Society of America

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GB/T 7714 Dong, Jun , Jiang, Chao , Jia, Shuhai . Digital holographic metrology based on multi-angle interferometry [J]. | OPTICS LETTERS , 2016 , 41 (18) : 4301-4304 .
MLA Dong, Jun et al. "Digital holographic metrology based on multi-angle interferometry" . | OPTICS LETTERS 41 . 18 (2016) : 4301-4304 .
APA Dong, Jun , Jiang, Chao , Jia, Shuhai . Digital holographic metrology based on multi-angle interferometry . | OPTICS LETTERS , 2016 , 41 (18) , 4301-4304 .
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Toward a hybrid brain-computer interface based on repetitive visual stimuli with missing events SCIE PubMed Scopus
期刊论文 | 2016 , 13 | JOURNAL OF NEUROENGINEERING AND REHABILITATION | IF: 3.516
WoS CC Cited Count: 2
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Abstract :

Background: Steady-state visually evoked potentials (SSVEPs) can be elicited by repetitive stimuli and extracted in the frequency domain with satisfied performance. However, the temporal information of such stimulus is often ignored. In this study, we utilized repetitive visual stimuli with missing events to present a novel hybrid BCI paradigm based on SSVEP and omitted stimulus potential (OSP). Methods: Four discs flickering from black to white with missing flickers served as visual stimulators to simultaneously elicit subject's SSVEPs and OSPs. Key parameters in the new paradigm, including flicker frequency, optimal electrodes, missing flicker duration and intervals of missing events were qualitatively discussed with offline data. Two omitted flicker patterns including missing black/white disc were proposed and compared. Averaging times were optimized with Information Transfer Rate (ITR) in online experiments, where SSVEPs and OSPs were identified using Canonical Correlation Analysis in the frequency domain and Support Vector Machine (SVM)-Bayes fusion in the time domain, respectively. Results and conclusions: The online accuracy and ITR (mean +/- standard deviation) over nine healthy subjects were 79.29 +/- 18.14 % and 19.45 +/- 11.99 bits/min with missing black disc pattern, and 86.82 +/- 12.91 % and 24.06 +/- 10.95 bits/min with missing white disc pattern, respectively. The proposed BCI paradigm, for the first time, demonstrated that SSVEPs and OSPs can be simultaneously elicited in single visual stimulus pattern and recognized in real-time with satisfied performance. Besides the frequency features such as SSVEP elicited by repetitive stimuli, we found a new feature (OSP) in the time domain to design a novel hybrid BCI paradigm by adding missing events in repetitive stimuli.

Keyword :

Omitted stimulus potential (OSP) Brain Computer Interface (BCI) Electroencephalogram (EEG) Steady-state visually evoked potential (SSVEP)

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GB/T 7714 Wu, Yingying , Li, Man , Wang, Jing . Toward a hybrid brain-computer interface based on repetitive visual stimuli with missing events [J]. | JOURNAL OF NEUROENGINEERING AND REHABILITATION , 2016 , 13 .
MLA Wu, Yingying et al. "Toward a hybrid brain-computer interface based on repetitive visual stimuli with missing events" . | JOURNAL OF NEUROENGINEERING AND REHABILITATION 13 (2016) .
APA Wu, Yingying , Li, Man , Wang, Jing . Toward a hybrid brain-computer interface based on repetitive visual stimuli with missing events . | JOURNAL OF NEUROENGINEERING AND REHABILITATION , 2016 , 13 .
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The 4-aminopyridine in vitro epilepsy model analyzed with a perforated multi-electrode array SCIE
期刊论文 | 2011 , 60 (7-8) , 1142-1153 | NEUROPHARMACOLOGY | IF: 4.814
WoS CC Cited Count: 33
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Abstract :

Epileptiform discharges recorded in the 4-aminopyridine (4-AP) in vitro epilepsy model are mediated by glutamatergic and GABAergic signaling. Using a 60-channel perforated multi-electrode array (pMEA) on corticohippocampal slices from 2 to 3 week old mice we recorded interictal- and ictal-like events. When glutamatergic transmission was blocked, interictal-like events no longer initiated in the hilus or CA3/CA1 pyramidal layers but originated from the dentate gyrus granule and molecular layers. Furthermore, frequencies of interictal-like events were reduced and durations were increased in these regions while cortical discharges were completely blocked. Following GABA(A) receptor blockade interictal-like events no longer propagated to the dentate gyrus while their frequency in CA3 increased; in addition, ictal-like cortical events became shorter while increasing in frequency. Lastly, drugs that affect tonic and synaptic GABAergic conductance modulated the frequency, duration, initiation and propagation of interictal-like events. These findings confirm and expand on previous studies indicating that multiple synaptic mechanisms contribute to synchronize neuronal network activity in forebrain structures. This article is part of a Special Issue entitled 'Trends in Neuropharmacology: In Memory of Erminio Costa'. (C) 2010 Elsevier Ltd. All rights reserved.

Keyword :

Seizures Local field potentials Hippocampus 4-Aminopyridine GABA

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GB/T 7714 Gonzalez-Sulser, Alfredo , Wang, Jing , Motamedi, Gholam K. et al. The 4-aminopyridine in vitro epilepsy model analyzed with a perforated multi-electrode array [J]. | NEUROPHARMACOLOGY , 2011 , 60 (7-8) : 1142-1153 .
MLA Gonzalez-Sulser, Alfredo et al. "The 4-aminopyridine in vitro epilepsy model analyzed with a perforated multi-electrode array" . | NEUROPHARMACOLOGY 60 . 7-8 (2011) : 1142-1153 .
APA Gonzalez-Sulser, Alfredo , Wang, Jing , Motamedi, Gholam K. , Avoli, Massimo , Vicini, Stefano , Dzakpasu, Rhonda . The 4-aminopyridine in vitro epilepsy model analyzed with a perforated multi-electrode array . | NEUROPHARMACOLOGY , 2011 , 60 (7-8) , 1142-1153 .
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An epileptic seizure prediction algorithm from scalp EEG based on morphological filter and kolmogorov complexity EI CPCI-S Scopus
会议论文 | 2007 , 4561 , 736-746 | 1st International Conference on Digital Human Modeling held at the HCI International 2007
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Abstract :

Epilepsy is the most common neurological disorder in the world, second only to stroke. There are nearly 15 million patients suffer from refractory epilepsy, with no available therapy. Although most seizures are not life threatening, they are an unpredictable source of annoyance and embarrassment, which will result in unconfident and fear. Prediction of epileptic seizures has a profound effect in understanding the mechanism of seizure, improving the rehabilitation possibilities and thereby the quality of life for epilepsy patients. A seizure prediction system can help refractory patients rehabilitate psychologically. In this paper, we introduce an epilepsy seizure prediction algorithm from scalp EEG based on morphological filter and Kolmogorov complexity. Firstly, a complex filter is constructed to remove the artifacts in scalp EEG, in which a morphological filter with optimized structure elements is proposed to eliminate the ocular artifact. Then, the improved Kolmogorov complexity is applied to describe the non-linear dynamic transition of brains. Results show that only the Kolmogorov complexity of electrodes near the epileptogenic focus reduces significantly before seizures. Through the analysis of 7 long-term scalp EEG recordings from 5 epilepsy patients, the average prediction time is 8.5 minutes, the mean sensitivity is 74.0% and specificity is 33.6%.

Keyword :

kolmogorov complexity scalp EEG morphological filter artifact removal epileptic seizure prediction

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GB/T 7714 Xu, Guanghua , Wang, Jing , Zhang, Qing et al. An epileptic seizure prediction algorithm from scalp EEG based on morphological filter and kolmogorov complexity [C] . 2007 : 736-746 .
MLA Xu, Guanghua et al. "An epileptic seizure prediction algorithm from scalp EEG based on morphological filter and kolmogorov complexity" . (2007) : 736-746 .
APA Xu, Guanghua , Wang, Jing , Zhang, Qing , Zhu, Junming . An epileptic seizure prediction algorithm from scalp EEG based on morphological filter and kolmogorov complexity . (2007) : 736-746 .
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Study on information integration of condition monitoring and fault diagnosis system in manufacturing CPCI-SSH CPCI-S
会议论文 | 2006 , 499-506 | International Conference on Research and Practical Issues of Enterprise Information Systems
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Abstract :

Aimed at the problems of equipment condition information share and integration in the enterprise monitoring and diagnosis systems, the XML-based model of equipment condition information was presented by analysing the structure of equipment condition information. Afterwards, with the help of the model, the idea of intranet-based software "bus" for machine monitoring and fault diagnosis system was proposed, which is a criterion that specifies the data presentation, management and communication protocol. According to the difference of work mode, the information provider is divided into pusher and puller, the information applicant passively or actively receives the information correspondingly. Then, the technique has been applied to the information integration between the portable condition monitoring system and the online condition monitoring system, Results show that it have enough flexibility and expansibility, and can be applied to large-scale information integration of equipment condition information.

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GB/T 7714 Liu Dan , Xu Guanghua , Liang Lin et al. Study on information integration of condition monitoring and fault diagnosis system in manufacturing [C] . 2006 : 499-506 .
MLA Liu Dan et al. "Study on information integration of condition monitoring and fault diagnosis system in manufacturing" . (2006) : 499-506 .
APA Liu Dan , Xu Guanghua , Liang Lin , Luo Ailing . Study on information integration of condition monitoring and fault diagnosis system in manufacturing . (2006) : 499-506 .
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An integrated information system for route inspection in manufacturing CPCI-SSH CPCI-S
会议论文 | 2006 , 479-487 | International Conference on Research and Practical Issues of Enterprise Information Systems
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Abstract :

Medium and small equipments in manufacturing are numerous, various and dispersive, so route inspection is the best method to acquire their condition information for its flexibility and low costs. In this paper, an integrated information system for route inspection is constructed to achieve distributed information acquisition on a large scale and centralized information management in a well order. Firstly, the information transfer model of route inspection is erected to describe information demands of route inspection participant. Then, several key problems, such as the instrument for information acquiring, information administration mode, interaction mode and security, are resolved respectively. Finally, three units, workstation, server and client are developed to acquire, manage and utilize the information. They are integrated into a whole system called MTREE, which has been applied into several steel enterprises successfully.

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GB/T 7714 Zhang Qing , Xu Guanghu , Wang Jing et al. An integrated information system for route inspection in manufacturing [C] . 2006 : 479-487 .
MLA Zhang Qing et al. "An integrated information system for route inspection in manufacturing" . (2006) : 479-487 .
APA Zhang Qing , Xu Guanghu , Wang Jing , Liu Dan . An integrated information system for route inspection in manufacturing . (2006) : 479-487 .
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An automatic EEG spike detection algorithm using morphological filter EI CPCI-S Scopus
会议论文 | 2006 , 170-+ | IEEE International Conference on Automation Science and Engineering
WoS CC Cited Count: 2
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Epileptic electroencephalogram data contains transient components and background activities. One of the transients is spike, which occurs randomly with short-duration. Spike detection in EEG is significant for clinical diagnosis of epilepsy. Since it is time consuming to scan spikes manually, an automatic spike detection method is necessary. In this paper, we introduce an automatic spike detection method in epileptic EEG based on morphological filter. Firstly, an average weighted combination of open-closing and clos-opening morphological operator, which eliminates statistical deflection of amplitude, is utilized to extract spike component from epileptic EEG. Then, according to the characteristic of spike component, the structure elements are constructed with two parabolas, and a new criterion is put forward to optimize center amplitude and width of the structure elements. The proposed method is evaluated by simulated epileptic EEG data. Results show that background activity is fully restrained and spike component is well extracted. Finally, the method is applied to normal and epileptic EEG data which are actually recorded from nine testees. The average detection rate of spikes is 91.62% and no false detection for normal EEG signals.

Keyword :

morphological filter structure elements optimization epilepsy electroencephalogram (EEG) spike

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GB/T 7714 Xu, Guanghua , Wang, Jing , Zhang, Qing et al. An automatic EEG spike detection algorithm using morphological filter [C] . 2006 : 170-+ .
MLA Xu, Guanghua et al. "An automatic EEG spike detection algorithm using morphological filter" . (2006) : 170-+ .
APA Xu, Guanghua , Wang, Jing , Zhang, Qing , Zhu, Junming . An automatic EEG spike detection algorithm using morphological filter . (2006) : 170-+ .
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