Publications by authors named "Guosheng Sun"

8 Publications

  • Page 1 of 1

Self-Powered and Self-Sensing Energy Textile System for Flexible Wearable Applications.

ACS Appl Mater Interfaces 2020 Dec 3;12(50):55876-55883. Epub 2020 Dec 3.

Research Center for Intelligent and Wearable Technology, College of Textiles and Clothing, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, P. R. China.

Intelligent textiles require flexible power sources that can be seemingly integrated with a variety of electronic devices to realize new smart wearable applications. However, current research mainly focuses on the design of the textile structures, often ignoring the importance of seamless configuration. This approach results in an uncomfortable experience when the device is worn and makes it difficult to smoothly connect each monofunctional device. The view of the yarn structure, a multifunctional yarn-based wearable system is fabricated through combining seamless strain sensors and energy storage devices. Yarn deposited with poly(3,4-ethylenedioxythiophene) (PEDOT) via in situ polymerization is then prepared as a highly conductive yarn sensor and a flexible yarn-shaped supercapacitor (SC). All-yarn-based SCs are incorporated with strain sensors within self-powered flexible devices designed to detect human motion. Multiple textile structures can be woven into garments including power supply to sensors, with promising application potential across wearable electronics and smart clothing.
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http://dx.doi.org/10.1021/acsami.0c16305DOI Listing
December 2020

Foveal structure, function and microvascular morphology in school-age children with laser-treated retinopathy of prematurity.

Eye (Lond) 2021 Jun 10;35(6):1605-1613. Epub 2020 Aug 10.

Department of Ophthalmology, Peking University People's Hospital, Eye Diseases and Optometry Institute, Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, College of Optometry, Peking University Health Science Center, Beijng, China.

Purpose: The purpose of this retrospective case-control study was to evaluate the relationship between foveal structure, function, microvascular morphology and visual acuity in school-age children with laser-treated retinopathy of prematurity (ROP).

Methods: Foveal structural parameters, including the central foveal thickness (CFT), inner retinal thickness (IRT) and outer retinal thickness (ORT), were measured on B-scans using an Optovue XR Avanti optical coherence tomography device. Foveal microvascular parameters, including the foveal avascular zone (FAZ), superficial capillary plexus-vessel density (SCP-VD) and deep capillary plexus-vessel density (DCP-VD), were measured on optical coherence tomography angiography with a scan size of 3 × 3. The P1 amplitudes and P1 implicit times were recorded by a multifocal electroretinogram with 61 elements.

Results: Fifty-five eyes (26 eyes of school-age ROP children and 29 eyes of full-term controls) were analysed. The ROP children manifested a significantly smaller FAZ, higher SCP-VD and higher DCP-VD than the controls (p < 0.001). The CFT (p < 0.001), IRT (p < 0.001) and ORT (p = 0.001) were significantly increased in the ROP group. The P1 amplitudes in all five-ring retinal regions were significantly smaller in the ROP group (p < 0.001). Multivariable analysis indicated that best-corrected visual acuity was positively correlated with post-menstrual age (PMA) and negatively correlated with SCP-VD and CFT (R = 0.529, p < 0.001, 0.043 and 0.020, respectively).

Conclusion: The foveal structure, function and microvascular morphology are affected in school-age children with laser-treated ROP. PMA, foveal structural anomalies and microvascular changes in ROP children were associated with impaired visual function.
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http://dx.doi.org/10.1038/s41433-020-01127-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8169880PMC
June 2021

Long-term follow-up of primary silicone oil tamponade for retinal detachment secondary to macular hole in highly myopic eyes: a prognostic factor analysis.

Eye (Lond) 2021 02 6;35(2):625-631. Epub 2020 May 6.

Department of Ophthalmology, Peking University People's Hospital; Eye diseases and optometry institute; Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, College of Optometry, Peking University Health Science Center, 100044, Beijing, China.

Purpose: To investigate the risk factors associated with retinal detachment recurrence after first vitrectomy in high myopic eyes with macular hole retinal detachment (MHRD).

Methods: Patients with high myopic eyes with MHRD who underwent pars plana vitrectomy and silicone oil (SO) tamponade with a follow-up period more than 12 months and more than 3 months after SO removal were included in this retrospective study. Logistic regression was performed to determine the risk factors associated with retinal re-detachment.

Results: A total of 45 eyes from 43 patients were included in this study (11 male and 34 female patients). The retinal re-detachment rate after the first removal of silicon oil was 35.5% (16/45) in a mean postoperative follow-up time of 35.64 ± 32.94 months. Complete macular atrophy on fundus photography (odds ratio (OR) = 17.021, 95% confidence interval (95% CI): 2.218-130.609, p = 0.006) was a risk factor for MHRD after SO removal, while internal limiting membrane (ILM) peeling (OR = 0.091, 95% CI: 0.013-0.633, p = 0.015) and duration of SO tamponade (OR = 0.667, 95% CI: 0.454-0.980, p = 0.039) were protective factors.

Conclusion: For high myopic eyes with MHRD, complete macular atrophy was a significant risk factor for retinal re-detachment after silicon oil removal. ILM peeling and the duration of silicon oil tamponade were protective factors.
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http://dx.doi.org/10.1038/s41433-020-0922-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8027595PMC
February 2021

OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY-GUIDED PHOTODYNAMIC THERAPY FOR ACUTE CENTRAL SEROUS CHORIORETINOPATHY.

Retina 2021 Jan;41(1):189-198

Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, Peking University People's Hospital, Beijing, China.

Purpose: To compare the anatomic results of optical coherence tomography angiography (OCTA)-guided half-dose photodynamic therapy (PDT) versus indocyanine green angiography (ICGA)-guided PDT in eyes with acute central serous chorioretinopathy.

Methods: This study is a prospective, single-center, noninferiority, double-masked, randomized, controlled clinical trial. Fifty-one eyes of 45 patients with acute central serous chorioretinopathy were recruited, and randomized to an ICGA-guided group and an OCTA-guided group. The primary outcome measures were the rates of complete subretinal fluid (SRF) resolution at 1 month and 3 months.

Results: Forty-six eyes of 40 patients finished the follow-up and were analyzed. In the OCTA-guided group, the SRF was completely resolved in 13 (56.5%) eyes within 1 month and in 21 (91.3%) eyes within 3 months. In the ICGA-guided group, the SRF was resolved in 16 (69.6%) of the eyes within 1 month and in 22 (95.7%) of the eyes by 3 months. Optical coherence tomography angiography-guided PDT was demonstrated noninferior to ICGA-guided PDT for SRF resolution rate at 3 months (P = 0.016), but not at 1 month (P = 0.311) for acute central serous chorioretinopathy patients. Subretinal fluid did not recur in any of the eyes in the OCTA-guided group, but did recur in 2 eyes (8.7%) of the ICGA-guided group during the 3-month follow-up period.

Conclusion: Optical coherence tomography angiography-guided PDT seemed to be noninferior to ICGA-guided PDT for resolution of SRF at 3 months in eyes with acute central serous chorioretinopathy.
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http://dx.doi.org/10.1097/IAE.0000000000002795DOI Listing
January 2021

Optical Coherence Tomography Angiography Compared with Indocyanine Green Angiography in Central Serous Chorioretinopathy.

Sci Rep 2019 04 16;9(1):6149. Epub 2019 Apr 16.

Ophthalmology Optometry Centre, Peking University People's Hospital, Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, Beijing, 100044, China.

The purpose of this article is to compare optical coherence tomography angiography (OCTA) and indocyanine green angiography (ICGA) in patients with central serous chorioretinopathy (CSC). OCTA, ICGA and fluorescein angiography (FA) images of all enrolled patients were collected and compared. Abnormal areas were annotated on en face choriocapillaris OCTA and ICGA images and compared with each other. We found three main types of anomalies in choriocapillaris OCTA images: type A, coarse granulated high reflective area (61 eyes [92.4%]); type B, roundish dark halo around Type A (54 eyes [81.8%]); and type C, coarse granulated low reflective area (66 eyes [100%]). There were 54 eyes (81.8%) that exhibited all three types abnormalities, 7 (10.6%) had only type A and C abnormalities, and 5 (7.6%) had only type C abnormalities. The Mean JI of type A on OCTA and hyperfluorescence area on ICGA was 0.84 ± 0.15 and 0.82 ± 0.23 for grader 1 and 2, respectively. Type A area on OCTA had a statistically larger area than hyperfluorescence on ICGA (P = 0.01 [paired t-test]). In summary, abnormalities were found on OCTA images of CSC. Coarse granulated high reflective area in OCTA corresponded well with the hyper-permeability area in ICGA in most of the eyes.
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http://dx.doi.org/10.1038/s41598-019-42623-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6467994PMC
April 2019

Surface Evolution of Nano-Textured 4H-SiC Homoepitaxial Layers after High Temperature Treatments: Morphology Characterization and Graphene Growth.

Nanomaterials (Basel) 2015 Sep 18;5(3):1532-1543. Epub 2015 Sep 18.

Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083, China.

Nano-textured 4H-SiC homoepitaxial layers (NSiCLs) were grown on 4H-SiC(0001) substrates using a low pressure chemical vapor deposition technique (LPCVD), and subsequently were subjected to high temperature treatments (HTTs) for investigation of their surface morphology evolution and graphene growth. It was found that continuously distributed nano-scale patterns formed on NSiCLs which were about submicrons in-plane and about 100 nanometers out-of-plane in size. After HTTs under vacuum, pattern sizes reduced, and the sizes of the remains were inversely proportional to the treatment time. Referring to Raman spectra, the establishment of multi-layer graphene (MLG) on NSiCL surfaces was observed. MLG with ² disorders was obtained from NSiCLs after a high temperature treatment under vacuum at 1700 K for two hours, while MLG without ² disorders was obtained under Ar atmosphere at 1900 K.
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http://dx.doi.org/10.3390/nano5031532DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5304623PMC
September 2015

Growth of Hexagonal Columnar Nanograin Structured SiC Thin Films on Silicon Substrates with Graphene-Graphitic Carbon Nanoflakes Templates from Solid Carbon Sources.

Materials (Basel) 2013 Apr 16;6(4):1543-1553. Epub 2013 Apr 16.

Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.

We report a new method for growing hexagonal columnar nanograin structured silicon carbide (SiC) thin films on silicon substrates by using graphene-graphitic carbon nanoflakes (GGNs) templates from solid carbon sources. The growth was carried out in a conventional low pressure chemical vapor deposition system (LPCVD). The GGNs are small plates with lateral sizes of around 100 nm and overlap each other, and are made up of nanosized multilayer graphene and graphitic carbon matrix (GCM). Long and straight SiC nanograins with hexagonal shapes, and with lateral sizes of around 200-400 nm are synthesized on the GGNs, which form compact SiC thin films.
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http://dx.doi.org/10.3390/ma6041543DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5452306PMC
April 2013

Clinical experience in application of the acupoint futu.

Authors:
Guosheng Sun

J Tradit Chin Med 2002 Jun;22(2):132-3

TCM Hospital of Henan Province, Zhengzhou 450002, Henan.

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June 2002
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