BACKGROUND The rupture of a splenic artery aneurysm(SAA)in pregnancy is an uncommon condition.However,it is associated with high mortality rates in pregnant women and fetuses even after surgical treatment.Though the e...BACKGROUND The rupture of a splenic artery aneurysm(SAA)in pregnancy is an uncommon condition.However,it is associated with high mortality rates in pregnant women and fetuses even after surgical treatment.Though the endovascular treatment of SAAs is currently preferred as it can improve the outcomes even in emergent cases,the endovascular treatment of a ruptured SAA during pregnancy has not been reported until date.CASE SUMMARY We report a case of a 33-year-old woman with the sudden onset of epigastric pain due to a ruptured SAA at the mid-portion of the splenic artery at 18 wk of pregnancy.After emergent initial resuscitation,the patient was diagnosed with a ruptured SAA through digital angiography.Immediately upon diagnosis,she underwent emergent endovascular embolization of the splenic artery for the rupture on the spot.Next,surgery was performed to remove the hematoma under stable conditions.Although the fetus was found to be dead during resuscitation,the woman recovered without complications and was discharged 15 d postoperatively.CONCLUSION Endovascular treatment might be a valuable alternative to surgery/lead to safer surgery for selected pregnant patients with ruptured SAAs.展开更多
Micro-light-emitting diodes(μLEDs)have gained significant interest as an activation source for gas sensors owing to their advantages,including room temperature operation and low power consumption.However,despite thes...Micro-light-emitting diodes(μLEDs)have gained significant interest as an activation source for gas sensors owing to their advantages,including room temperature operation and low power consumption.However,despite these benefits,challenges still exist such as a limited range of detectable gases and slow response.In this study,we present a blueμLED-integrated light-activated gas sensor array based on SnO_(2)nanoparticles(NPs)that exhibit excellent sensitivity,tunable selectivity,and rapid detection with micro-watt level power consumption.The optimal power forμLED is observed at the highest gas response,supported by finite-difference time-domain simulation.Additionally,we first report the visible light-activated selective detection of reducing gases using noble metal-decorated SnO_(2)NPs.The noble metals induce catalytic interaction with reducing gases,clearly distinguishing NH3,H2,and C2H5OH.Real-time gas monitoring based on a fully hardwareimplemented light-activated sensing array was demonstrated,opening up new avenues for advancements in light-activated electronic nose technologies.展开更多
Demand for augmented reality(AR)technology in the healthcare industry has gradually increased due to its immersive and interactive environment,which enhances the medical staff’s intuitive interpretation of sensing da...Demand for augmented reality(AR)technology in the healthcare industry has gradually increased due to its immersive and interactive environment,which enhances the medical staff’s intuitive interpretation of sensing data during surgery,rehabilitation,diagnosis,education,and therapy.However,current skin-mountable,wearable sensors integrated with AR platforms mainly focus on Human-Machine Interface(HMI)for interactive experiences.Furthermore,most wearable sensors currently used in conjunction with AR systems are rigid and cumbersome,which hampers their application to the skin interfaces of patients for personalized healthcare.Herein,we developed a wireless,battery-free multi-axial sensor with a thin and small form factor and integrated it with the AR system to visualize sensing data(e.g.,pressure,shear stress,and temperature)from the subjects.The overall system demonstrated efficacy in preventing pressure injuries,monitoring posture to prevent disc herniation,and intuitive AR monitoring of physical parameters for subjects sitting in wheelchairs and lying in bed.展开更多
Fiber supercapacitors(FSs)based on transition metal oxides(TMOs)have garnered considerable attention as energy stor-age solutions for wearable electronics owing to their exceptional characteristics,including superior ...Fiber supercapacitors(FSs)based on transition metal oxides(TMOs)have garnered considerable attention as energy stor-age solutions for wearable electronics owing to their exceptional characteristics,including superior comfortability and low weights.These materials are known to exhibit high energy densities,high specific capacitances,and fast redox reactions.However,current fabrication methods for these structures primarily rely on chemical deposition,often resulting in undesir-able material structures and necessitating the use of additives,which can degrade the electrochemical performance of such structures.Herein,physically deposited TMO nanoribbon yarns generated via delamination engineering of nanopatterned TMO/metal/TMO trilayer arrays are proposed as potential high-performance FSs.To prepare these arrays,the target materials were initially deposited using a nanoline mold,and subsequently,the nanoribbon was suspended through selective plasma etching to obtain the desired twisted yarn structures.Because of the direct formation of TMOs on Ni electrodes,a high energy/power density and excellent electrochemical stability were achieved in asymmetric FS devices incorporating CoNixOy nanoribbon yarns and graphene fibers.Furthermore,a triboelectric nanogenerator,pressure sensor,and flexible light-emitting diode were synergistically combined with the FS.The integration of wearable electronic components,encompassing energy harvesting,energy storage,and powering sensing/display devices,is promising for the development of future smart textiles.展开更多
Electronic nose(e-nose)technology for selectively identifying a target gas through chemoresistive sensors has gained much attention for various applications,such as smart factory and personal health monitoring.To over...Electronic nose(e-nose)technology for selectively identifying a target gas through chemoresistive sensors has gained much attention for various applications,such as smart factory and personal health monitoring.To overcome the crossreactivity problem of chemoresistive sensors to various gas species,herein,we propose a novel sensing strategy based on a single micro-LED(μLED)-embedded photoactivated(μLP)gas sensor,utilizing the time-variant illumination for identifying the species and concentrations of various target gases.A fast-changing pseudorandom voltage input is applied to the μLED to generate forced transient sensor responses.A deep neural network is employed to analyze the obtained complex transient signals for gas detection and concentration estimation.The proposed sensor system achieves high classification(~96.99%)and quantification(mean absolute percentage error~31.99%)accuracies for various toxic gases(methanol,ethanol,acetone,and nitrogen dioxide)with a single gas sensor consuming 0.53 mW.The proposed method may significantly improve the efficiency of e-nose technology in terms of cost,space,and power consumption.展开更多
Individuals who are unable to walk independently spend most of the day in a wheelchair.This population is at high risk for developing pressure injuries caused by sitting.However,early diagnosis and prevention of these...Individuals who are unable to walk independently spend most of the day in a wheelchair.This population is at high risk for developing pressure injuries caused by sitting.However,early diagnosis and prevention of these injuries still remain challenging.Herein,we introduce battery-free,wireless,multimodal sensors and a movable system for continuous measurement of pressure,temperature,and hydration at skin interfaces.The device design includes a crack-activated pressure sensor with nanoscale encapsulations for enhanced sensitivity,a temperature sensor for measuring skin temperature,and a galvanic skin response sensor for measuring skin hydration levels.The movable system enables power harvesting,and data communication to multiple wireless devices mounted at skin-cushion interfaces of wheelchair users over full body coverage.Experimental evaluations and numerical simulations of the devices,together with clinical trials for wheelchair patients,demonstrate the feasibility and stability of the sensor system for preventing pressure injuries caused by sitting.展开更多
Emerging freestanding membrane technologies,especially using inorganic thermoelectric materials,demonstrate the potential for advanced thermoelectric platforms.However,using rare and toxic elements during material pro...Emerging freestanding membrane technologies,especially using inorganic thermoelectric materials,demonstrate the potential for advanced thermoelectric platforms.However,using rare and toxic elements during material processing must be circumvented.Herein,we present a scalable method for synthesizing highly crystalline CuS membranes for thermoelectric applications.By sulfurizing crystalline Cu,we produce a highly percolated and easily transferable network of submicron CuS rods.The CuS membrane effectively separates thermal and electrical properties to achieve a power factor of 0.50 mW m^(-1) K^(-2) and thermal conductivity of 0.37 W m^(-1) K^(-1) at 650 K(estimated value).This yields a record-high dimensionless figure-of-merit of 0.91 at 650 K(estimated value)for covellite.Moreover,integrating 12 CuS devices into a module resulted in a power generation of4μW atΔT of 40 K despite using a straightforward configuration with only p-type CuS.Furthermore,based on the temperature-dependent electrical characteristics of CuS,we develop a wearable temperature sensor with antibacterial properties.展开更多
文摘BACKGROUND The rupture of a splenic artery aneurysm(SAA)in pregnancy is an uncommon condition.However,it is associated with high mortality rates in pregnant women and fetuses even after surgical treatment.Though the endovascular treatment of SAAs is currently preferred as it can improve the outcomes even in emergent cases,the endovascular treatment of a ruptured SAA during pregnancy has not been reported until date.CASE SUMMARY We report a case of a 33-year-old woman with the sudden onset of epigastric pain due to a ruptured SAA at the mid-portion of the splenic artery at 18 wk of pregnancy.After emergent initial resuscitation,the patient was diagnosed with a ruptured SAA through digital angiography.Immediately upon diagnosis,she underwent emergent endovascular embolization of the splenic artery for the rupture on the spot.Next,surgery was performed to remove the hematoma under stable conditions.Although the fetus was found to be dead during resuscitation,the woman recovered without complications and was discharged 15 d postoperatively.CONCLUSION Endovascular treatment might be a valuable alternative to surgery/lead to safer surgery for selected pregnant patients with ruptured SAAs.
基金supported by the Nano&Material Technology Development Program through the National Research Foundation of Korea(NRF)funded by Ministry of Science and ICT(RS-2024-00405016)supported by“Cooperative Research Program for Agriculture Science and Technology Development(Project No.PJ01706703)”Rural Development Administration,Republic of Korea.The Inter-University Semiconductor Research Center and Institute of Engineering Research at Seoul National University provided research facilities for this work.
文摘Micro-light-emitting diodes(μLEDs)have gained significant interest as an activation source for gas sensors owing to their advantages,including room temperature operation and low power consumption.However,despite these benefits,challenges still exist such as a limited range of detectable gases and slow response.In this study,we present a blueμLED-integrated light-activated gas sensor array based on SnO_(2)nanoparticles(NPs)that exhibit excellent sensitivity,tunable selectivity,and rapid detection with micro-watt level power consumption.The optimal power forμLED is observed at the highest gas response,supported by finite-difference time-domain simulation.Additionally,we first report the visible light-activated selective detection of reducing gases using noble metal-decorated SnO_(2)NPs.The noble metals induce catalytic interaction with reducing gases,clearly distinguishing NH3,H2,and C2H5OH.Real-time gas monitoring based on a fully hardwareimplemented light-activated sensing array was demonstrated,opening up new avenues for advancements in light-activated electronic nose technologies.
基金supported by the Technology Innovation Program(00144157,Development of Heterogeneous Multi-Sensor Micro-System Platform)funded by the Ministry of Trade,Industry&Energy(MOTIE,Korea)supported by the Institute of Information&Communications Technology Planning&Evaluation(IITP)grant funded by the Korea government(MSIT)(No.2022-0-00025,Development of soft-suit technology to support human motor ability).
文摘Demand for augmented reality(AR)technology in the healthcare industry has gradually increased due to its immersive and interactive environment,which enhances the medical staff’s intuitive interpretation of sensing data during surgery,rehabilitation,diagnosis,education,and therapy.However,current skin-mountable,wearable sensors integrated with AR platforms mainly focus on Human-Machine Interface(HMI)for interactive experiences.Furthermore,most wearable sensors currently used in conjunction with AR systems are rigid and cumbersome,which hampers their application to the skin interfaces of patients for personalized healthcare.Herein,we developed a wireless,battery-free multi-axial sensor with a thin and small form factor and integrated it with the AR system to visualize sensing data(e.g.,pressure,shear stress,and temperature)from the subjects.The overall system demonstrated efficacy in preventing pressure injuries,monitoring posture to prevent disc herniation,and intuitive AR monitoring of physical parameters for subjects sitting in wheelchairs and lying in bed.
基金financially supported by the National Creative Research Initiative(CRI)Center for Multi-Dimensional Directed Nanoscale Assembly(2015R1A3A2033061)a Creative Challenge research grant(RS-2023-00248902)through the National Research Foundation of Korea(NRF),funded by the Ministry of Science+2 种基金supported by the Collabo R&D between Industry,Academy,and Research Institute(RS-2024-00428937)funded by the Ministry of SMEs and Startups(MSS,Korea)This study was also supported by the Development Program of Machinery and Equipment Industrial Technology(20018235,Development of an inline nanoimprinter for nanophotonic device)funded by the Ministry of Trade,Industry,&Energy(MI,Korea),the Ministry of Culture,Sports,and Tourism,and the Korea Creative Content Agency(Project Number:R2022020033)It was also supported by a National Research Foundation of Korea(NRF)grant funded by the Korean government(MSIT)(No.2021R1A2C3008742).
文摘Fiber supercapacitors(FSs)based on transition metal oxides(TMOs)have garnered considerable attention as energy stor-age solutions for wearable electronics owing to their exceptional characteristics,including superior comfortability and low weights.These materials are known to exhibit high energy densities,high specific capacitances,and fast redox reactions.However,current fabrication methods for these structures primarily rely on chemical deposition,often resulting in undesir-able material structures and necessitating the use of additives,which can degrade the electrochemical performance of such structures.Herein,physically deposited TMO nanoribbon yarns generated via delamination engineering of nanopatterned TMO/metal/TMO trilayer arrays are proposed as potential high-performance FSs.To prepare these arrays,the target materials were initially deposited using a nanoline mold,and subsequently,the nanoribbon was suspended through selective plasma etching to obtain the desired twisted yarn structures.Because of the direct formation of TMOs on Ni electrodes,a high energy/power density and excellent electrochemical stability were achieved in asymmetric FS devices incorporating CoNixOy nanoribbon yarns and graphene fibers.Furthermore,a triboelectric nanogenerator,pressure sensor,and flexible light-emitting diode were synergistically combined with the FS.The integration of wearable electronic components,encompassing energy harvesting,energy storage,and powering sensing/display devices,is promising for the development of future smart textiles.
基金supported by the Multi-Ministry Collaborative R&D Program(Development of Techniques for Identification and Analysis of Gas Molecules to Protect against Toxic Substances)through the National Research Foundation of Korea(NRF)funded by KNPA,MSIT,MOTIE,ME,and NFA(Grant No.NRF-2022M3D9A1023618)the National Research Foundation of Korea(NRF)grant funded by the Korean government(MSIT)(NRF-2021R1A2C3008742)+1 种基金supported by the National Research Foundation(NRF)grant funded by the Korean government(MIST)(Grant No.NRF-2020M3E4A1080112)supported by Disco Corporation(Japan).
文摘Electronic nose(e-nose)technology for selectively identifying a target gas through chemoresistive sensors has gained much attention for various applications,such as smart factory and personal health monitoring.To overcome the crossreactivity problem of chemoresistive sensors to various gas species,herein,we propose a novel sensing strategy based on a single micro-LED(μLED)-embedded photoactivated(μLP)gas sensor,utilizing the time-variant illumination for identifying the species and concentrations of various target gases.A fast-changing pseudorandom voltage input is applied to the μLED to generate forced transient sensor responses.A deep neural network is employed to analyze the obtained complex transient signals for gas detection and concentration estimation.The proposed sensor system achieves high classification(~96.99%)and quantification(mean absolute percentage error~31.99%)accuracies for various toxic gases(methanol,ethanol,acetone,and nitrogen dioxide)with a single gas sensor consuming 0.53 mW.The proposed method may significantly improve the efficiency of e-nose technology in terms of cost,space,and power consumption.
基金supported by the Technology Innovation Program(00144157,Development of Heterogeneous Multi-Sensor Micro-System Platform)funded By the Ministry of Trade,Industry&Energy(MOTIE,korea)and the National Research Foundation of Korea(NRF)grant funded by the Korea government(MSIT)(no.2021R1A2C3008742)supported by the MSIT(Ministry of Science and ICT),Korea,under the Grand Information Technology Research Center support program(IITP-2022-2016-0-00318)supervised by the IITP(Institute for Information&communications Technology Planning&Evaluation)Z.X.acknowledges the support from the National Natural Science Foundation of China(Grant No.12072057).
文摘Individuals who are unable to walk independently spend most of the day in a wheelchair.This population is at high risk for developing pressure injuries caused by sitting.However,early diagnosis and prevention of these injuries still remain challenging.Herein,we introduce battery-free,wireless,multimodal sensors and a movable system for continuous measurement of pressure,temperature,and hydration at skin interfaces.The device design includes a crack-activated pressure sensor with nanoscale encapsulations for enhanced sensitivity,a temperature sensor for measuring skin temperature,and a galvanic skin response sensor for measuring skin hydration levels.The movable system enables power harvesting,and data communication to multiple wireless devices mounted at skin-cushion interfaces of wheelchair users over full body coverage.Experimental evaluations and numerical simulations of the devices,together with clinical trials for wheelchair patients,demonstrate the feasibility and stability of the sensor system for preventing pressure injuries caused by sitting.
基金supported by the Korea Research Institute of Chemical Technology(KRICT)of the Republic of Korea(KS2321-10,BSK23-440,KK2351-10)supported by the National Research Foundation of Korea(NRF)grant funded by the Korea government(Ministry of Science and ICT)(RS-2024-00421857)supported by the Korea Institute of Energy Technology Evaluation and Planning(KETEP)grant funded by the Ministry of Trade,Industry and Energy(MOTIE)(2021202080023D).
文摘Emerging freestanding membrane technologies,especially using inorganic thermoelectric materials,demonstrate the potential for advanced thermoelectric platforms.However,using rare and toxic elements during material processing must be circumvented.Herein,we present a scalable method for synthesizing highly crystalline CuS membranes for thermoelectric applications.By sulfurizing crystalline Cu,we produce a highly percolated and easily transferable network of submicron CuS rods.The CuS membrane effectively separates thermal and electrical properties to achieve a power factor of 0.50 mW m^(-1) K^(-2) and thermal conductivity of 0.37 W m^(-1) K^(-1) at 650 K(estimated value).This yields a record-high dimensionless figure-of-merit of 0.91 at 650 K(estimated value)for covellite.Moreover,integrating 12 CuS devices into a module resulted in a power generation of4μW atΔT of 40 K despite using a straightforward configuration with only p-type CuS.Furthermore,based on the temperature-dependent electrical characteristics of CuS,we develop a wearable temperature sensor with antibacterial properties.
