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Advances in flexible sensors for intelligent perception system enhanced by artificial intelligence

InfoMat 2023年第5期5卷 55-110页

作者： Hongsen Niu Feifei Yin Eun-Seong Kim Wenxiao Wang Do-young yoon Cong Wang Junge Liang Yang Li Nam-young Kim RFIC Centre Kwangwoon UniversitySeoulRepublic of Korea Department of Electronics Engineering Kwangwoon UniversitySeoulRepublic of Korea NDAC Centre Kwangwoon UniversitySeoulRepublic of Korea Department of Chemical Engineering Kwangwoon UniversitySeoulRepublic of Korea School of Electronics and Information Engineering Harbin Institute of TechnologyHarbinthe People's Republic of China Department of Electronic Engineering Jiangnan UniversityWuxithe People's Republic of China School of Information Science and Engineering University of JinanJinanthe People's Republic of China

Intelligent perception means that with the assistance of artificial intelligence(AI)-motivated brain,flexible sensors achieve the ability of memory,learning,judgment,and reasoning about external information like the human *** to the superiority of machine learning(ML)algorithms in data processing and intelligent recognition,intelligent perception systems possess the ability to match or even surpass human perception ***,the built-in flexible sensors in these systems need to work on dynamic and irregular surfaces,inevitably affecting the precision and fidelity of the acquired *** recent years,the strategy of introducing the developed functional materials and innovative structures into flexible sensors has made some progress toward the above challenges,and with the blessing of ML algorithms,accurate perception and reasoning in various scenarios have been ***,the most representative functional materials and innovative structures for constructing flexible sensors are comprehensively reviewed,the research progress of intelligent perception systems based on flexible sensors and ML algorithms is further summarized,and the intersection of the two is expected to unlock new opportunities for next-stage AI development.

关键词： flexible sensor intelligent perception artificial intelligence machine learning

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Fibrillary gelation and dedoping of PEDOT:PSS fibers for interdigitated organic electrochemical transistors and circuits

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npj Flexible Electronics 2022年第1期6卷 330-340页

作者： young Jin Jo Soo young Kim Jeong Hun Hyun Byeonghak Park Seunghwan Choy Gyan Raj Koirala tae-il Kim School of Chemical Engineering Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Biomedical Institute for Convergence(BICS) Sungkyunkwan University(SKKU)Suwon 16419Korea

As one of conducting polymers,PEDOT:PSS,is commonly used in organic electronics,especially for bioelectronics due to its advantages such as high electrical and ionic conductivity,solution-processability and *** bioelectronics with the PEDOT:PSS requires advanced techniques to obtain physical/chemical modification of the PEDOT:PSS for improved performance and various *** satisfy these demands,fibrillary gelation of PEDOT:PSS by injection to choline acetate,an ionic liquid,with a constant flow rate was used in this study to make a conductive fiber and improve characteristics of PEDOT:*** fibers by fibrillary gelation showed enhanced electrical conductivity of about 400 S cm^(-1) and volumetric capacitance of about 154 F cm^(−3) which would be strongly beneficial to be utilized for organic electrochemical transistors(OECTs),resulting in a high transconductance of 19 mS in a ***,dedoping of the conductive fibers by PEI(polyethyleneimine)enabled the creation of enhancement-mode *** inverters were then fabricated by connecting depletion and enhancement-mode *** results demonstrate that these conductive fibers and electronic-textiles are suitable candidates for applications in bio-integrated electronics.

关键词： fibers doping digit

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Growth and Magnetic Properties of Sol-Gel Derived Co-Doped ZnO Thin Film

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Journal of Rare Earths 2006年第Z1期24卷 59-63页

作者： young Sung Kim Ki Chul Kim Won Pil tae Dae Ho yoon tae Seok Park Su Jeong Suh Advanced Material Process of Information Technology Sungkyunkwan University Suwon 440-746 Korea Cambridge-ETRI Joint R&D Centre Electronics and Telecommunications Research Institute Daejeon 305-350 Korea Ulsan Industry Promotion Techno Park Ulsan 683-804 Korea Advanced Material Process of Information Technology Sungkyunkwan University Suwon 440-746 Korea Advanced Material Process of Information Technology Sungkyunkwan University Suwon 440-746 Korea Advanced Material Process of Information Technology Sungkyunkwan University Suwon 440-746 Korea

Zn1-xCoxO films were grown on glass by sol-gel spin coating process. A homogeneous and stable Zn1-xCoxO sol was prepared by dissolving zinc acetate dihydrate, cobalt acetate tetrahydrate and aluminium chloride hexahydrate as solutes in solution of isopropanol and monoethanolamine. The films were postheated and vacuum annealed, and investigated for c-axis preferred orientation and electromagnetic properties. Zn1-xCoxO films with different Co concentrations were oriented well along the c-axis, especially the Zn1-xCoxO film with 10% Co(atom fraction) was highly c-axis oriented. The transmittance spectra show that Zn1-xCoxO films occur d-d transition and sp-d exchange interaction between Co2+ ions. The electrical resistivity of the films at 10% Co had the lowest value because the crystallite size became largest and the crystallinity of the c-axis was improved. X-ray photoelectron spectroscopy and alternating gradient magnetometer analyses indicated that no Co metal cluster was formed, and the ferromagnetism at room temperature appeared. The characteristics of the electrical resistivity and room temperature ferromagnetism of sol-gel derived Zn1-xCoxO films suggest a potential application of dilute magnetic semiconductor devices.

关键词： sol-gel Zn1-xCoxO thin film dilute magnetic semiconductor (DMS)

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Fabrication of High-Density Out-of-Plane Microneedle Arrays with Various Heights and Diverse Cross-Sectional Shapes

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Nano-Micro Letters 2022年第2期14卷 60-78页

作者： Hyeonhee Roh young Jun yoon Jin Soo Park Dong-Hyun Kang Seung Min Kwak Byung Chul Lee Maesoon Im Brain Science Institute Korea Institute of Science and Technology(KIST)Seoul 02792South Korea Division of Electrical Engineering College of EngineeringKorea UniversitySeoul 02841South Korea Micro/Nano Fabrication Center KISTSeoul 02792South Korea Division of Bio‑Medical Science&Technology KIST SchoolUniversity of Science&Technology(UST)Seoul 02792South Korea

Out-of-plane microneedle structures are widely used in various applications such as transcutaneous drug delivery and neural signal recording for brain machine *** work presents a novel but simple method to fabricate high-density silicon(Si)microneedle arrays with various heights and diverse cross-sectional shapes depending on photomask pattern *** proposed fabrication method is composed of a single photolithography and two subsequent deep reactive ion etching(DRIE)***,a photoresist layer was patterned on a Si substrate to define areas to be etched,which will eventually determine the final location and shape of each individual ***,the 1st DRIE step created deep trenches with a highly anisotropic etching of the Si ***,the photoresist was removed for more isotropic etching;the 2nd DRIE isolated and sharpened microneedles from the predefined trench *** on diverse photomask designs,the 2nd DRIE formed arrays of microneedles that have various height distributions,as well as diverse cross-sectional shapes across the *** these simple steps,high-aspect ratio microneedles were created in the high density of up to 625 microneedles mm^(-2)on a Si *** tests showed a small force as low as~172μN/microneedle is required for microneedle arrays to penetrate the dura mater of a mouse *** demonstrate a feasibility of drug delivery application,we also implemented silk microneedle arrays using molding *** fabrication method of the present study is expected to be broadly applicable to create microneedle structures for drug delivery,neuroprosthetic devices,and so on.

关键词： Microneedle Various heights Cross-sectional shapes Isotropic etch Deep reactive ion etching

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High-performance solid-solution potassium-ion intercalation mechanism of multilayered turbostratic graphene nanosheets

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Journal of Energy Chemistry 2022年第4期31卷 814-823页

作者： Jiae Um Seung Uk yoon Hoseong Kim Beom Sik Youn Hyoung-Joon Jin Hyung-Kyu Lim young Soo Yun Program in Environmental and Polymer Engineering Inha Universityncheon 22212 South Korea Department of Polymer Science and Engineering Inha UniversityIncheon 22212South Korea Division of Chemical Engineering and Bioengineering Kangwon National University Chuncheon Gangwon-do 24341 South Korea KU-KIST Graduate School of Converging Science and Technologyea University 145 Anam-roSeongbuk-guSoul02841 South Korea Department of Integrative Energy Engineering 145 Anam-roSongbuk-guKorea UniversitySeoul 02841 South Korea

The solid-solution reaction between an alkali cation and an active host material is known as a singlephase redox mechanism,and it is typically accompanied by a continuous voltage *** is distinct from the typical alkali cation intercalation reaction at an equivalent site of the active host material,which exhibits a voltage ***,we report an unusual solid-solution potassium-ion intercalation mechanism with a low-voltage plateau capacity on multilayered turbostratic graphene nanosheets(T-GNSs).Despite the disordered graphitic structure with a broad range of d-spacings(3.65–4.18À),the T-GNSs showed a reversible plateau capacity of~200 m A h g^(-1),which is higher than that of a well-ordered graphite nanoplate(~120 m A h g^(-1)).In addition,a sloping capacity of~220 m A h g^(-1)was delivered with the plateau capacity,and higher rate capabilities,better reversibility,and a more stable cycling performance were confirmed on the turbostratic ***-principles calculations suggest that the multitudinous lattice domains of the T-GNSs contain diverse intercalation sites with strong binding energies,which could be the origin of the high-performance solid-solution potassium-ion intercalation behavior when the turbostratic graphene stacks have a d-spacing smaller than that of equilibrium potassium–graphite intercalation compounds(5.35À).

关键词： Turbostratic graphite Graphene nanosheet Defective carbon Anode Potassium-ion batteries

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A conformal titanyl phosphate amorphous overlayer for enhancing photoelectrochemical hydrogen peroxide production

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Journal of Energy Chemistry 2023年第11期86卷 399-408,I0009页

作者： Jaekyum Kim young Eun Kim Minyeong Je Won tae Hong Chang-Lyoul Lee tae-Hoon Kim Sung Min Cho Chang Hyuck Choi Heechae Choi Woo-Seok Choe Jung Kyu Kim School of Chemical Engineering Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea SKKU Advanced Institute of Nano Technology(SAINT) Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Theoretical Materials&Chemistry Group Institute of Inorganic ChemistryUniversity of CologneGreinstr.650939CologneGermany Advanced Photonics Research Institute(APRI) Gwangju Institute of Science and Technology(GIST)Gwangju 61005Republic of Korea Department of Materials Science and Engineering Chonnam National UniversityGwangju 61186Republic of Korea Department of Chemistry Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea Institute for Convergence Research and Education in Advanced Technology(I-CREATE) Yonsei UniversitySeoul 03722Republic of Korea Department of Chemistry Xi’an Jiaotong-Liverpool UniversitySuzhou 215123JiangsuChina

Photoelectrochemical(PEC)H_(2)O_(2)production through water oxidation reaction(WOR)is a promising strategy,however,designing highly efficient and selective photoanode materials remains challenging due to competitive reaction ***,for highly enhanced PEC H_(2)O_(2)production,we present a conformal amorphous titanyl phosphate(a-TP)overlayer on nanoparticulate TiO_(2)surfaces,achieved via lysozyme-molded in-situ surface *** a-TP overlayer modulates surface adsorption energies for reaction intermediates,favoring WOR for H_(2)O_(2)production over the competing O_(2)evolution *** density functional theory calculations reveal that a-TP/TiO_(2)exhibits a substantial energy uphill for the O·*formation pathway,which disfavors O_(2)evolution but promotes H_(2)O_(2)***,the a-TP overlayer strengthens the built-in electric field,resulting in favorable ***,a-TP/TiO_(2)exhibits 3.7-fold higher Faraday efficiency(FE)of 63%at 1.76 V *** hydrogen electrode(RHE)under 1 sun illumination,compared to bare TiO_(2)(17%),representing the highest FE among TiO_(2)-based WOR H_(2)O_(2)production *** the a-TP overlayer constitutes a promising strategy for controlling reaction pathways and achieving efficient solar-to-chemical energy conversion.

关键词： Solar H_(2)O_(2) production In-situ surface reforming Titanyl phosphate Amorphous overlayer Reaction pathway control

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胃十二指肠支架置入术

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中华介入放射学电子杂志 2024年第2期12卷 97-105页

作者：金建永曹家玮宋昊永金镇亨袁航胡鸿涛尹彰振首尔国立大学医学院盆唐医院放射科韩国首尔463-707 南方医科大学广东省人民医院(广东省医学科学院)微创介入科广东广州510627 郑州大学附属肿瘤医院(河南省肿瘤医院)放射介入科河南郑州450008 蔚山大学医学院峨山医院放射科放射研究所韩国首尔138-736

胃出口梗阻是晚期胰腺、胃和十二指肠恶性肿瘤的一种晚期并发症。胃出口梗阻患者会出现难治性恶心、呕吐和厌食,进而可能导致电解质失衡、脱水和营养不良。此外,这些患者持续存在误吸和肺炎的风险。传统上,这些梗阻大多采用手术治疗。然... 详细信息

胃出口梗阻是晚期胰腺、胃和十二指肠恶性肿瘤的一种晚期并发症。胃出口梗阻患者会出现难治性恶心、呕吐和厌食,进而可能导致电解质失衡、脱水和营养不良。此外,这些患者持续存在误吸和肺炎的风险。传统上,这些梗阻大多采用手术治疗。然而,许多患者由于初始评估时的身体状况不佳而不适合接受搭桥手术。此外,其发病率和死亡率显著较高,并与症状持续或延迟缓解和住院时间延长相关。球囊扩张术和金属支架置入已成功应用于不适合手术的患者。文章将对其适应证、禁忌证、技术、结果及争议进行综述。

关键词：胃十二指肠肿瘤梗阻自膨式金属支架

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Endovascular treatment of traumatic renal artery pseudoaneurysm with a Stanford type A intramural haematoma:A case report

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World Journal of Clinical Cases 2022年第27期10卷 9760-9767页

作者： Yook Kim Jin young Lee Jin Suk Lee Jin Bong Ye Se Heon Kim young Hoon Sul Su young yoon Jung Hee Choi Hanlim Choi Department of Radiology Chungbuk National University HospitalCheongju-si 28644Chungcheongbuk-doSouth Korea Department of Trauma Surgery Chungbuk National University HospitalCheongju-si 28644Chungcheongbuk-doSouth Korea Department of Trauma Surgery College of MedicineChungbuk National UniversityCheongju-si 28644Chungcheongbuk-doSouth Korea Cardiovascular and Thoracic Surgery Chungbuk National University HospitalCheongju-si 28644Chungcheongbuk-doSouth Korea Anesthesiology and Pain Medicine Chungbuk National University HospitalCheongju-si 28644Chungcheongbuk-doSouth Korea Department of Surgery Chungbuk National University HospitalCheongju-si 28644Chungcheongbuk-doSouth Korea

BACKGROUND Aortic intramural hematoma(IMH) associated with aortic branch tear and intramurally located pseudoaneurysm after blunt trauma has not been ***,we report a case of progressive type A aortic IMH associated with a pseudoaneurysm arising from the injured proximal renal artery after blunt *** SUMMARY During logging operations,a 66-year-old man experienced blunt force trauma after being injured by a fallen *** arrived at our trauma center with a left flank pain *** tomography(CT) revealed a pseudoaneurysm arising from the proximal renal artery(localized within the aortic media) and Stanford type A IMH.A covered stent was deployed along the left main renal artery,bridging the pseudoaneurysm and covering the parent artery,successfully excluding the pseudoaneurysm as confirmed using ***,although the degree of the pseudoaneurysm decreased,follow-up CT revealed remnant pseudoaneurysm,likely caused by an ***,a covered stent was additionally installed through the previously deployed covered *** exclusion of the pseudoaneurysm was confirmed using final *** the 7-mo follow-up CT scan,the IMH and pseudoaneurysm completely disappeared with no evidence of stent-related *** Endovascular treatment such as stent-graft placement can be an effective and safe treatment for traumatic renal artery injury.

关键词： Aortic intramural hematoma Blunt trauma Intimomedial tear Renal arterial injury Stent-graft Case report

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Ectopic peritoneal paragonimiasis mimicking tuberculous peritonitis:A care report

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World Journal of Clinical Cases 2022年第16期10卷 5359-5364页

作者： Jung Woo Choi Chang Min Lee Seong Je Kim Se In Hah Ji yoon Kwak Hyun Chin Cho Chang yoon Ha Woon tae Jung Ok Jae Lee Department of Internal Medicine Gyeongsang National University College of Medicine and Gyeongsang National University HospitalJinju 52727South Korea Institute of Health Sciences Gyeongsang National UniversityJinju 52828South Korea

BACKGROUND The most common site of paragonimiasis is in the *** migratory route passes through the duodenal wall,peritoneum,and diaphragm to the lungs;thus,the thoracic cavity and central nervous system,as well as the liver,intestine,and abdominal cavity may be ***,we present a case of intraperitoneal paragonimiasis without other organ involvement,mimicking tuberculous *** SUMMARY A 57-year-old man presented with recurrent abdominal pain for 4 *** examination revealed tenderness in the right lower *** findings showed complete blood counts within the normal range without *** reactive lymph nodes and diffuse peritoneal infiltration were noted on abdominal computed tomography(CT).There were no abnormalities on chest CT or *** findings of diagnostic laparoscopy for the differential diagnosis of tuberculous peritonitis and peritoneal carcinomatosis included multiple small whitish nodules and an abscess in the *** reports confirmed the presence of numerous eggs of Paragonimus westermani(***).A postoperative serum enzyme-linked immunosorbent assay revealed *** *** and repetitive history-taking led him to retrospectively recall the consumption of freshwater *** 3 d of treatment with praziquantel(1800 mg;25 mg/kg),he recovered from all *** In patients who require diagnostic laparoscopy for the differential diagnosis of tuberculous peritonitis and peritoneal carcinomatosis,repetitive history-taking and preoperative serologic antibody tests against Paragonimus may be helpful in diagnosing intraperitoneal paragonimiasis without other organ involvement.

关键词： Differential diagnoses Intraperitoneal abscess Paragonimiasis Paragonimus westermani Peritonitis Tuberculosis Case report

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Congenital retinal macrovessel with intracranial venous malformation in a pediatric patient: a case report

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International Journal of Ophthalmology(English edition) 2022年第7期15卷 1214-1216页

作者： Hyeon Jin Park Sook Hyun yoon Sook young Kim Donghun Lee Department of Ophthalmology Daegu Catholic University School of MedicineDaegu 42472Republic of Korea

Dear Editor,Congenital retinal macrovessel (CRM) is defined as an abnormal large retinal vessel that encircles the foveal avascular zone (FAZ).Since the first description of a large aberrant vessel crossing the macula by Mauthnerin 1868,there have been several case reports about *** recently,Pichi et alreported clinical manifestations and multimodal retinal imaging of 49 eyes with *** their study,they had identified an association between macrovessel in the retina and venous anomalies of the brain and they emphasized the importance of systemic workups including brain magnetic resonance imaging (MRI).

关键词： venous Congenital malformation

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