Nature Electronics最新文献_第9页

A self-filtering liquid acoustic sensor for voice recognition 用于语音识别的自滤波液体声学传感器

IF 33.7 1区工程技术

Nature Electronics Pub Date : 2024-09-23 DOI: 10.1038/s41928-024-01196-y

Xun Zhao, Yihao Zhou, Aaron Li, Jing Xu, Shreesh Karjagi, Edward Hahm, Lara Rulloda, Justin Li, John Hollister, Pirouz Kavehpour, Jun Chen

{"title":"A self-filtering liquid acoustic sensor for voice recognition","authors":"Xun Zhao, Yihao Zhou, Aaron Li, Jing Xu, Shreesh Karjagi, Edward Hahm, Lara Rulloda, Justin Li, John Hollister, Pirouz Kavehpour, Jun Chen","doi":"10.1038/s41928-024-01196-y","DOIUrl":"10.1038/s41928-024-01196-y","url":null,"abstract":"Wearable acoustic sensors can be used for voice recognition. However, the capabilities of such devices, which are typically based on solid materials, are often restricted by ambient noise, motion artefacts and low conformability to the skin. Here we report a liquid acoustic sensor for voice recognition. The approach is based on a three-dimensional oriented and ramified magnetic network structure of neodymium–iron–boron magnetic nanoparticles suspended in a carrier fluid, which behaves like a permanent magnet. The sensor can discriminate small pressures (0.9 Pa), has a high signal-to-noise ratio (69.1 dB) and provides self-filtering capabilities that can remove low-frequency biomechanical motion artefact (less than 30 Hz). We use the liquid acoustic sensor—together with a machine learning algorithm—to create a wearable voice recognition system that offers a recognition accuracy of 99% in a noisy environment. An acoustic sensor that is based on a network of magnetic nanoparticles suspended in a carrier fluid can be used—together with a machine learning algorithm—to create a wearable voice recognition system with an accuracy of 99% in a noisy environment.","PeriodicalId":19064,"journal":{"name":"Nature Electronics","volume":"7 10","pages":"924-932"},"PeriodicalIF":33.7,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142276886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hybrid multimodal wearable sensors for comprehensive health monitoring 用于全面健康监测的混合多模态可穿戴传感器

IF 33.7 1区工程技术

Nature Electronics Pub Date : 2024-09-23 DOI: 10.1038/s41928-024-01247-4

Kuldeep Mahato, Tamoghna Saha, Shichao Ding, Samar S. Sandhu, An-Yi Chang, Joseph Wang

{"title":"Hybrid multimodal wearable sensors for comprehensive health monitoring","authors":"Kuldeep Mahato, Tamoghna Saha, Shichao Ding, Samar S. Sandhu, An-Yi Chang, Joseph Wang","doi":"10.1038/s41928-024-01247-4","DOIUrl":"10.1038/s41928-024-01247-4","url":null,"abstract":"Wearable bioelectronic sensors are often used for health monitoring but are typically limited to a few physical or chemical parameters, which hinders their ability to provide a complete health assessment. Recently, wearable sensor platforms have been developed that can simultaneously and continuously record multiple biophysical and biochemical signals. These devices take advantage of advances in electronic device fabrication and miniaturization, bioelectronic sensors, and flexible materials. However, compared with existing wearable systems, which mostly contain either biochemical or biophysical sensors, hybrid multimodal wearable patches present a number of distinct challenges for further advancement. Here, we examine the development of such hybrid multimodal wearable sensors and explore their potential applications in tracking the health and disease status of different users. We highlight the key biomarkers and vital signs (related to various pathophysiological conditions) that hybrid bioelectronic sensor systems must be designed around. We also explore how artificial intelligence could be integrated with these hybrid multimodal sensors to offer wearers the ability to assess their health status in real time. This Review examines the development and potential of wearable sensor systems that use multiple physical and chemical sensing modalities to assess human health.","PeriodicalId":19064,"journal":{"name":"Nature Electronics","volume":"7 9","pages":"735-750"},"PeriodicalIF":33.7,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142276885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A sense of touch without skin 没有皮肤的触觉

IF 33.7 1区工程技术

Nature Electronics Pub Date : 2024-09-18 DOI: 10.1038/s41928-024-01255-4

Katharina Zeissler

引用次数: 0

Magnesium niobate as a high-κ gate dielectric for two-dimensional electronics 铌酸镁作为二维电子学的高κ栅极电介质

IF 33.7 1区工程技术

Nature Electronics Pub Date : 2024-09-18 DOI: 10.1038/s41928-024-01245-6

Cheng-Yi Zhu, Meng-Ru Zhang, Qing Chen, Lin-Qing Yue, Rong Song, Cong Wang, Hui-Zhen Li, Feichi Zhou, Yang Li, Weiwei Zhao, Liang Zhen, Mengwei Si, Jia Li, Jingli Wang, Yang Chai, Cheng-Yan Xu, Jing-Kai Qin

{"title":"Magnesium niobate as a high-κ gate dielectric for two-dimensional electronics","authors":"Cheng-Yi Zhu, Meng-Ru Zhang, Qing Chen, Lin-Qing Yue, Rong Song, Cong Wang, Hui-Zhen Li, Feichi Zhou, Yang Li, Weiwei Zhao, Liang Zhen, Mengwei Si, Jia Li, Jingli Wang, Yang Chai, Cheng-Yan Xu, Jing-Kai Qin","doi":"10.1038/s41928-024-01245-6","DOIUrl":"10.1038/s41928-024-01245-6","url":null,"abstract":"Integrated circuits based on two-dimensional semiconductors require ultrathin gate insulators that can provide high interface quality and dielectric reliability, minimized electrically active traps and efficient gate controllability. However, existing two-dimensional insulators do not provide a good trade-off in terms of bandgap, breakdown strength, dielectric constant, leakage current and bias temperature stability. Here, we show that single crystals of magnesium niobate (MgNb2O6) can be obtained through a buffer-controlled epitaxial growth process on a mica substrate. The atomically thin MgNb2O6 crystals have a wide bandgap (around 5.0 eV), high dielectric constant (around 20), large breakdown voltage (around 16 MV cm−1) and good thermal reliability. The MgNb2O6 can form a van der Waals interface with monolayer molybdenum disulfide (MoS2) with an extremely low density of trap states. MoS2 field-effect transistors with MgNb2O6 gate dielectrics exhibit a hysteresis under 0.9 mV (MV cm−1)−1, a subthreshold swing of 62 mV dec−1, an on/off current ratio of up to 4 × 107 and high electrical reliability at 500 K. The excellent electrostatic controllability of MgNb2O6 allowed us to create graphene-contacted transistors and inverter circuits with a channel length of 50 nm. A high-κ dielectric ceramic, magnesium niobate, can be epitaxially grown on a mica substrate and then transferred to form the gate dielectric in molybdenum disulfide transistors, providing van der Waals interfaces and high robustness to temperature and voltage.","PeriodicalId":19064,"journal":{"name":"Nature Electronics","volume":"7 12","pages":"1137-1146"},"PeriodicalIF":33.7,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142236553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Two-dimensional transistors heat up 二维晶体管发热

IF 33.7 1区工程技术

Nature Electronics Pub Date : 2024-09-18 DOI: 10.1038/s41928-024-01254-5

Stuart Thomas

引用次数: 0

Flexible strain gauges that can be picked and placed 可拾取和放置的柔性应变片

IF 33.7 1区工程技术

Nature Electronics Pub Date : 2024-09-18 DOI: 10.1038/s41928-024-01253-6

Matthew Parker

引用次数: 0

A microspectrometer with dual-signal spectral reconstruction 双信号光谱重建微光谱仪

IF 33.7 1区工程技术

Nature Electronics Pub Date : 2024-09-17 DOI: 10.1038/s41928-024-01242-9

Xinchuan Du, Yang Wang, Yi Cui, Gaofeng Rao, Jianwen Huang, Xinrui Chen, Ting Zhou, Chunyang Wu, Zongyin Yang, Hanxiao Cui, Yicheng Zhao, Jie Xiong

{"title":"A microspectrometer with dual-signal spectral reconstruction","authors":"Xinchuan Du, Yang Wang, Yi Cui, Gaofeng Rao, Jianwen Huang, Xinrui Chen, Ting Zhou, Chunyang Wu, Zongyin Yang, Hanxiao Cui, Yicheng Zhao, Jie Xiong","doi":"10.1038/s41928-024-01242-9","DOIUrl":"10.1038/s41928-024-01242-9","url":null,"abstract":"Computational spectrometers with small footprints can be integrated with other devices for use in applications such as chemical analysis, medical diagnosis and environmental monitoring. However, their spectral resolution is limited because conventional photoelectric detectors only measure an amplitude-dependent response to incident light. Here we show that a deformable two-dimensional homojunction can be used to create a microspectrometer with dual-signal spectral reconstruction. The semifloating molybdenum disulfide homojunction exhibits a giant electrostriction effect through which the kinetics of photo-generated carriers can be manipulated via an in-plane electric field generated by gate voltage. By leveraging the tunability of both amplitude and relaxation time of the photoelectric response, a dual-signal response can be used with a deep neural network algorithm to reconstruct an incident spectrum. Our dual-signal microspectrometer has a footprint of 20 × 25 µm2, offers a resolution of 1.2 nm and has a spectral waveband number of 380, which is comparable to benchtop spectrometers. A semifloating molybdenum disulfide homojunction exhibits a photoelectric response with a tunable amplitude and relaxation time, which can be used for reconstructive spectroscopy with high resolution and a small device footprint.","PeriodicalId":19064,"journal":{"name":"Nature Electronics","volume":"7 11","pages":"984-990"},"PeriodicalIF":33.7,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142235155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A closed-loop neurostimulation device that reaches new levels 达到新水平的闭环神经刺激设备

IF 33.7 1区工程技术

Nature Electronics Pub Date : 2024-09-11 DOI: 10.1038/s41928-024-01243-8

Mengge Wu, Kuanming Yao, Xinge Yu

引用次数: 0

A shape-morphing cortex-adhesive sensor for closed-loop transcranial ultrasound neurostimulation 用于闭环经颅超声神经刺激的形状变形皮质粘合传感器

IF 33.7 1区工程技术

Nature Electronics Pub Date : 2024-09-11 DOI: 10.1038/s41928-024-01240-x

Sungjun Lee, Jeungeun Kum, Sumin Kim, Hyunjin Jung, Soojung An, Soon Jin Choi, Jae Hyuk Choi, Jinseok Kim, Ki Jun Yu, Wonhye Lee, Hyeok Kim, Hyung-Seop Han, Mikyung Shin, Hyungmin Kim, Donghee Son

{"title":"A shape-morphing cortex-adhesive sensor for closed-loop transcranial ultrasound neurostimulation","authors":"Sungjun Lee, Jeungeun Kum, Sumin Kim, Hyunjin Jung, Soojung An, Soon Jin Choi, Jae Hyuk Choi, Jinseok Kim, Ki Jun Yu, Wonhye Lee, Hyeok Kim, Hyung-Seop Han, Mikyung Shin, Hyungmin Kim, Donghee Son","doi":"10.1038/s41928-024-01240-x","DOIUrl":"10.1038/s41928-024-01240-x","url":null,"abstract":"Transcranial focused ultrasound has shown promising non-invasive therapeutic effects for drug-resistant epilepsy due to its spatial resolution and depth penetrability. However, current manual strategies, which use fixed neurostimulation protocols, cannot provide precise patient-specific treatment due to the absence of ultrasound wave-insensitive closed-loop neurostimulation devices. Here, we report a shape-morphing cortex-adhesive sensor for closed-loop transcranial ultrasound neurostimulation. The sensor consists of a catechol-conjugated alginate hydrogel adhesive, a stretchable 16-channel electrode array and a viscoplastic self-healing polymeric substrate, and is coupled to a pulse-controlled transcranial focused ultrasound device. It can provide conformal and robust fixation to curvy cortical surfaces, and we show that it is capable of stable neural signal recording in awake seizure rodents during transcranial focused ultrasound neurostimulation. The sensing performance allows real-time detection of preseizure signals with unexpected and irregular high-frequency oscillations, and we demonstrate closed-loop seizure control supervised by intact cortical activity under ultrasound stimulation in awake rodents. A sensor that consists of a catechol-conjugated alginate hydrogel adhesive, a stretchable 16-channel electrode array and a viscoplastic self-healing polymeric substrate, and is coupled to a pulse-controlled transcranial focused ultrasound device, can be used for closed-loop transcranial ultrasound neurostimulation.","PeriodicalId":19064,"journal":{"name":"Nature Electronics","volume":"7 9","pages":"800-814"},"PeriodicalIF":33.7,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142166048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sweat sensing at your fingertips 汗液感应触手可及

IF 33.7 1区工程技术

Nature Electronics Pub Date : 2024-09-03 DOI: 10.1038/s41928-024-01235-8

Zhaofeng Ouyang, Shuo Wang, Yan Wang, Hao Sun

引用次数: 0