Review
Gastroenterology & Hepatology
Gengqing Song, Sophie Trujillo, Yuhan Fu, Fahmi Shibi, Jiande Chen, Ronnie Fass
Summary: Gastrointestinal dysmotility refers to muscle or nerve dysfunctions in the GI tract, leading to abnormalities in GI motor and sensory function. Current treatment involves diet and lifestyle changes, with limited effectiveness of pharmacotherapy. Transcutaneous electrical stimulation (TES), a noninvasive technique using electrical stimulation via non-needle electrodes, has shown to be beneficial in managing GI motility disorders.
NEUROGASTROENTEROLOGY AND MOTILITY
(2023)
Review
Gastroenterology & Hepatology
Jieyun Yin, Jiande D. Z. Chen
Summary: This article introduces several emerging noninvasive neuromodulation methods and discusses their clinical applications in common gastrointestinal motility disorders.
EXPERT REVIEW OF GASTROENTEROLOGY & HEPATOLOGY
(2023)
Article
Gastroenterology & Hepatology
Ying Zhu, Feng Xu, Dewen Lu, Peijing Rong, Jiafei Cheng, Miaomiao Li, Yaoyao Gong, Chao Sun, Wei Wei, Lin Lin, Jiande D. Z. Chen
Summary: This study found that transcutaneous auricular vagal nerve stimulation has therapeutic potential for functional dyspepsia by improving gastric accommodation and slow waves through enhancing vagal efferent activity, leading to alleviation of dyspeptic symptoms, anxiety, and depression.
AMERICAN JOURNAL OF PHYSIOLOGY-GASTROINTESTINAL AND LIVER PHYSIOLOGY
(2021)
Article
Clinical Neurology
Kenan Steidel, Kristina Krause, Katja Menzler, Adam Strzelczyk, Ilka Immisch, Sven Fuest, Iris Gorny, Peter Mross, Lukas Hakel, Laura Schmidt, Lars Timmermann, Felix Rosenow, Sebastian Bauer, Susanne Knake
Summary: This study demonstrated for the first time that 4 hours of taVNS can influence gastric motility in healthy participants, with high-frequency stimulation associated with higher amplitudes of peristaltic waves. Further research is needed to investigate the effects of different frequencies of taVNS and its therapeutic properties in conditions with impaired gastric motility.
Article
Endocrinology & Metabolism
M. Leitzke, S. Schimpf, M. Altrock, P. Schonknecht, S. Bischoff, H. Schubert, D. Hoyer, R. Bauer, S. Olbrich
Summary: Electrical stimulation of the gastric wall may shift the sympathetic-vagal balance towards parasympathetic predominance, as indicated by a decrease in sympathetic dominance marker nLF (from 58.00 to 25.52) and an increase in vagal dominance marker nHF (from 41.48 to 74.16). During gastric electrical stimulation, there was no difference in heart rate compared to baseline.
JOURNAL OF BIOLOGICAL REGULATORS AND HOMEOSTATIC AGENTS
(2021)
Article
Multidisciplinary Sciences
Emanuel Gunnarsson, Kristian Rodby, Fernando Seoane
Summary: Electro-stimulation has been used successfully for years to alleviate spasticity, pain, and increase mobility. The Mollii-suit by Inerventions utilizes dry conductive rubber electrodes, eliminating the need for frequent replacement. However, fitting the garment on the body is cumbersome. This paper presents the possibility of using knitted dry electrodes instead, which have lower skin friction and can easily be fitted to the body. Through validating the performance of the garment using electrical parameters, it is concluded that knitting techniques can produce a seamlessly integrated garment with beneficial manufacturing and comfort perspectives.
SCIENTIFIC REPORTS
(2023)
Article
Neurosciences
Qiufu Ma
Summary: This article summarizes evidence supporting the operation of long-distant acupuncture effects through somato-autonomic reflexes, and discusses the impact of somatosensory system encoding on acupuncture.
CURRENT OPINION IN NEUROBIOLOGY
(2022)
Article
Multidisciplinary Sciences
Peipei Xu, Shuang Guo, Yang Xie, Zitong Liu, Changbin Liu, Xin Zhang, Degang Yang, Huiming Gong, Yixin Chen, Liangjie Du, Yan Yu, Mingliang Yang
Summary: Removing part of the colonic sympathetic innervation through peri-arterial sympathectomy of the inferior mesenteric artery (PSIMA) can alleviate hyperreflexic bowel in rats with SCI. PSIMA increased faecal water content, emptying rate of faeces in colon, and defecation pressure of colon, lasting for at least 12 weeks. This procedure may offer a potential treatment option for patients with SCI experiencing hyperreflexic bowel.
SCIENTIFIC REPORTS
(2021)
Review
Clinical Neurology
Annabella Kurz, Gerd Fabian Volk, Dirk Arnold, Berit Schneider-Stickler, Winfried Mayr, Orlando Guntinas-Lichius
Summary: This article discusses the potential clinical value of surface electrical stimulation in the acute phase of denervation after facial nerve or recurrent laryngeal nerve paralysis, highlighting similarities between the two nerve lesions and the importance of directly stimulating denervated muscles. Early electromuscular stimulation may improve functional outcomes, but further research is needed to confirm its efficacy in larger controlled trials.
FRONTIERS IN NEUROLOGY
(2022)
Review
Gastroenterology & Hepatology
Xi-yang Wang, Hao Wang, Yuan-yuan Guan, Rong-lin Cai, Guo-ming Shen
Summary: This meta-analysis showed that acupuncture treatments (AT) had significant improvements in symptom severity for functional gastrointestinal disorders (FGIDs) compared to pharmacotherapy, placebo acupuncture, no specific treatment, and AT as an adjuvant intervention. Sub-group analysis also supported these findings for functional dyspepsia, irritable bowel syndrome, and functional constipation. Additionally, the incidence of adverse events was lower in AT compared to other treatments.
JOURNAL OF GASTROENTEROLOGY AND HEPATOLOGY
(2021)
Article
Multidisciplinary Sciences
Agata Furgala, Katarzyna Ciesielczyk, Magdalena Przybylska-Felus, Konrad Jablonski, Krzysztof Gil, Malgorzata Zwolinska-Wcislo
Summary: This study aimed to assess the postprandial response, including gut peptide secretion and gastric myoelectric activity, in patients with constipation-predominant irritable bowel syndrome (IBS-C). The results showed that IBS-C patients had significantly elevated preprandial levels of gastrin and insulin, while VIP and ghrelin levels were decreased. Moreover, the gastric motility was impaired in IBS-C patients. These findings suggest that disturbances in the postprandial concentration of gut peptides may contribute to abnormal gastric function and intestinal motility, leading to exacerbation of clinical symptoms in IBS patients.
SCIENTIFIC REPORTS
(2023)
Review
Biochemistry & Molecular Biology
Luke Juckett, Tiam Mana Saffari, Benjamin Ormseth, Jenna-Lynn Senger, Amy M. M. Moore
Summary: Peripheral nerve injuries (PNI) often result in lifelong disability with rare complete functional recovery. Intraoperative electrical stimulation (ES) is a promising surgical adjunct that can augment the intrinsic molecular pathways of nerve regeneration. Clinical trials have shown that ES can be an efficacious therapy to improve patient outcomes following PNIs.
Article
Integrative & Complementary Medicine
Seong Jin Cho, Kwang-Ho Choi, Min Ji Kim, O. Sang Kwon, Suk Yun Kang, Su Yeon Seo, Yeonhee Ryu
Summary: This study investigated the properties of electrical energy at acupuncture points in twelve meridians by measuring the biopotential. The results showed that acupuncture stimulation increased biopotential variability and influenced the biopotential difference between acupuncture and non-acupuncture points in the direction of Qi flow theory.
INTEGRATIVE MEDICINE RESEARCH
(2022)
Article
Medicine, Research & Experimental
Markus Vogt, Benjamin Schulz, Ahmed Wagdi, Jan Lebert, Gijsbert J. van Belle, Jan Christoph, Tobias Bruegmann, Robert Patejdl
Summary: This study demonstrates the direct optogenetic stimulation of smooth muscle cells to control gastric contractility, showing promising potential for restoring motility in gastroparesis in the future.
Article
Gastroenterology & Hepatology
D. F. Altomare, A. Picciariello, A. Di Ciaula, M. Rinaldi, M. De Fazio, P. Portincasa
Summary: Temporary sacral nerve stimulation (SNS) did not have any effect on upper/lower gastrointestinal motility and transit in patients with severe constipation.
TECHNIQUES IN COLOPROCTOLOGY
(2021)
Article
Optics
Chao Chen, Xiuguo Chen, Sheng Sheng, Zhongwen Xia, Jiacheng Shi, Wen Qiao, Shiyuan Liu
Summary: In this study, a home-made imaging Mueller matrix ellipsometer (IMME) was proposed to monitor the sidewall tilting of pixelated nanogratings. Through the combination of Mueller matrix elements, the tilting angle can be quickly and qualitatively identified for on-line quality monitoring of the device. By inversely calculating the Mueller matrix, the value of the tilting can be accurately and quantitatively obtained to meet the demands of the device design. It is expected that this method can provide guidance for the identification and detection of tilting in 3D display elements based on pixelated gratings.
Article
Materials Science, Multidisciplinary
Chunfu Guo, Yating Shi, Huaxi Wu, Yabo Xiang, Weiqi Li, Chuanwei Zhang, Shiyuan Liu
Summary: Optical scatterometry is widely used for nanostructure metrology in integrated circuit. This paper proposes a combination of library search and Levenberg-Marquardt algorithm to solve the problem. Simulations and experiments demonstrate that the proposed method is accurate and significantly faster than previous methods.
Article
Chemistry, Multidisciplinary
Honggang Gu, Zhengfeng Guo, Liusheng Huang, Mingsheng Fang, Shiyuan Liu
Summary: In this study, a quantitative strategy is proposed to systematically identify the critical point optical transitions of 2D semiconductors by combining spectroscopic ellipsometry and DFT calculations. Optical functions and critical points are determined by spectroscopic ellipsometry and connected to DFT band structure and projected density of states. The combination of spectroscopic ellipsometry and DFT provides a powerful tool to investigate the critical point optical transitions.
Article
Chemistry, Multidisciplinary
Zhengfeng Guo, Honggang Gu, Yali Yu, Zhongming Wei, Shiyuan Liu
Summary: Optical anisotropy in SnSe is utilized to design broadband and incident-angle-modulation near-infrared polarizers, with high modulation efficiency and no energy consumption. The broadband polarizer has a bandwidth of 324 nm and an average extinction ratio above 23 dB, while the incident-angle-modulation polarizer dynamically and reversibly modulates its working wavelength with a maximum extinction ratio of 71 dB. The proposed design opens up possibilities for mass-production and integration of polarizing optical components based on low-symmetry materials.
Article
Optics
Jinsong Zhang, Jiamin Liu, Jinlong Zhu, Hao Jiang, Shiyuan Liu
Summary: In this paper, an angle-resolved scatterometer capable of detecting multi-order diffracted light in a single measurement is proposed. An in-situ calibration method for the objective lens's polarization effects is also introduced. By considering the polarization effect of the objective lens, significant improvements in accuracy and repeatability precision can be achieved in the metrology of film thickness and grating topography parameters.
Article
Optics
Yaobin Feng, Zhiyang Song, Jiaman Liu, Zhiqin LI, Feng Yang, Hao Jiang, Shiyuan Liu
Summary: This paper proposes a method to evaluate the pattern coverage before obtaining any metrology data and constructs evaluation metrics. Experimental results show a positive correlation between these metrics and lithographic model accuracy. This method can improve the efficiency of OPC model building and is beneficial to the development process of the whole OPC recipe.
Article
Optics
Xiuguo Chen, Jing Hu, Wenlong Chen, Shilong Yang, Yifu Wang, Shiyuan Liu
Summary: This letter proposes a multi-spectral diffraction-based overlay (DBO) metrology method that utilizes the linear relation between overlay errors and combinations of Mueller matrix elements. The proposed approach enables snapshot and direct measurement of overlay errors over a wide spectral range without the need for rotating or active polarization components.
Article
Engineering, Multidisciplinary
Tianjuan Yang, Xiuguo Chen, Shuo Liu, Jiahao Zhang, Shiyuan Liu
Summary: This study proposes a measurement configuration optimization (MCO) method for optical scatterometry, which combines error propagation theory and condition-number-based error estimation technique to select an optimal or suboptimal combination of measurement conditions for higher measurement accuracy. The method is demonstrated on a multi-wavelength Mueller matrix scatterometry and shows good agreement in fitting results. This method provides an alternate solution to evaluate the MCO problem in optical scatterometry and other measurement scenarios.
MEASUREMENT SCIENCE AND TECHNOLOGY
(2023)
Article
Optics
Chuangchuang Chen, Jiamin Liu, Jinlong Zhu, Honggang Gu, Shiyuan Liu
Summary: Reflection ptychography is a lens-free computational imaging technology that captures distorted diffracted patterns using a coherent beam illuminated to a specimen inclined to the optical axis. The distortion caused by the non-coplanar scattering geometry disrupts the standard ptychographic reconstruction algorithms. We propose and analyze an axial distance calibration approach to improve the reconstructed resolution in reflection ptychography.
OPTICS AND LASERS IN ENGINEERING
(2023)
Article
Optics
Li Liu, Wenjie Li, Lei Zhong, Honggang Gu, Shiyuan Liu
Summary: This paper proposes an adaptive noise-blind-separation (aNBS) algorithm to deal with mixed noises of different types in ptychography. The algorithm introduces virtual probes of different wavelengths to capture noise energies and adaptively separates the mixed noises in ptychography. The proposed algorithm can separate coherent diffraction signals and noises without additional constraints or assumptions.
OPTICS AND LASERS IN ENGINEERING
(2023)
Article
Optics
Pinxuan He, Jiamin Liu, Honggang Gu, Jinlong Zhu, Hao Jiang, Shiyuan Liu
Summary: A method based on the modified Born series (MBS) is introduced for efficiently and accurately calculating the near field of extreme ultraviolet (EUV) masks with complex patterns. The MBS method is much faster than the finite-difference time-domain method while maintaining comparable accuracy.
Article
Optics
Zhou Jiang, Song Zhang, Hao Jiang, Shiyuan Liu
Summary: This paper proposes a calibration method to compensate for the field-of-view effect of waveplates installed in instruments, and verifies the effectiveness of the method through experiments. The results show that the proposed method significantly improves the precision and accuracy of film thickness measurement, reduces the assembly difficulty of optical systems, and improves their accuracy and stability.
Article
Optics
Jiamin Liu, Wenqi Gong, Lei Li, Song Zhang, Jinlong Zhu, Rong Chen, Hao Jiang, Shiyuan Liu
Summary: This paper presents an in-situ characterization method based on Mueller-matrix ellipsometry for investigating the longitudinal MO Kerr effects occurring in subwavelength thick ferromagnetic films. The proposed method allows reliable capture of the weak MO Kerr response signal of the ferromagnetic films with high repeatability precision better than 0.0002.
OPTICS AND LASERS IN ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Zhengfeng Guo, Honggang Gu, Mingsheng Fang, Lei Ye, Shiyuan Liu
Summary: Tellurene's giant in-plane optical anisotropy can be quantitatively evaluated using imaging Mueller matrix spectroscopic ellipsometry and first-principles calculations, and it is connected to its low-symmetry lattice structure and electrical anisotropy. This work provides a general and quantitative way to explore optical anisotropy and helps in understanding the relationship between lattice structure and optical anisotropy, thus promoting the development of polarization-sensitive optical applications.
Article
Materials Science, Multidisciplinary
Mingsheng Fang, Honggang Gu, Baokun Song, Zhengfeng Guo, Shiyuan Liu
Summary: This research investigates the thickness scaling effects on the optical conductivity of WSe2 by using spectroscopic ellipsometry and the classical slab model. The results reveal that the central energies of low-energy feature peaks decrease with increasing thickness, while the central energies of high-energy feature peaks exhibit a blueshift followed by a redshift with thickness. These findings are crucial for understanding the complex optical properties of WSe2.
ADVANCED PHOTONICS RESEARCH
(2022)
