{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,10]],"date-time":"2026-06-10T19:13:53Z","timestamp":1781118833350,"version":"3.54.1"},"reference-count":32,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2022,1,19]],"date-time":"2022-01-19T00:00:00Z","timestamp":1642550400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100018527","name":"Key Research Program of Frontier Science, Chinese Academy of Sciences","doi-asserted-by":"publisher","award":["QYZDY-SSW-JSC004"],"award-info":[{"award-number":["QYZDY-SSW-JSC004"]}],"id":[{"id":"10.13039\/501100018527","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Flexible pressure sensors have been studied as wearable voice-recognition devices to be utilized in human-machine interaction. However, the development of highly sensitive, skin-attachable, and comfortable sensing devices to achieve clear voice detection remains a considerable challenge. Herein, we present a wearable and flexible pressure and temperature sensor with a sensitive response to vibration, which can accurately recognize the human voice by combing with the artificial neural network. The device consists of a polyethylene terephthalate (PET) printed with a silver electrode, a filament-microstructured polydimethylsiloxane (PDMS) film embedded with single-walled carbon nanotubes and a polyimide (PI) film sputtered with a patterned Ti\/Pt thermistor strip. The developed pressure sensor exhibited a pressure sensitivity of 0.398 kPa\u22121 in the low-pressure regime, and the fabricated temperature sensor shows a desirable temperature coefficient of resistance of 0.13% \u2218C in the range of 25 \u2218C to 105 \u2218C. Through training and testing the neural network model with the waveform data of the sensor obtained from human pronunciation, the vocal fold vibrations of different words can be successfully recognized, and the total recognition accuracy rate can reach 93.4%. Our results suggest that the fabricated sensor has substantial potential for application in the human-computer interface fields, such as voice control, vocal healthcare monitoring, and voice authentication.<\/jats:p>","DOI":"10.3390\/s22030759","type":"journal-article","created":{"date-parts":[[2022,1,19]],"date-time":"2022-01-19T21:01:51Z","timestamp":1642626111000},"page":"759","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":22,"title":["Neural Network-Enabled Flexible Pressure and Temperature Sensor with Honeycomb-like Architecture for Voice Recognition"],"prefix":"10.3390","volume":"22","author":[{"given":"Yue","family":"Su","sequence":"first","affiliation":[{"name":"Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1379-591X","authenticated-orcid":false,"given":"Kainan","family":"Ma","sequence":"additional","affiliation":[{"name":"Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xu","family":"Zhang","sequence":"additional","affiliation":[{"name":"Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ming","family":"Liu","sequence":"additional","affiliation":[{"name":"Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,1,19]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2468","DOI":"10.1038\/s41467-019-10465-w","article-title":"An ultrathin conformable vibration-responsive electronic skin for quantitative vocal recognition","volume":"10","author":"Lee","year":"2019","journal-title":"Nat. Commun."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1316","DOI":"10.1002\/adma.201404794","article-title":"Eardrum-inspired active sensors for self-powered cardiovascular system characterization and throat-attached anti-interference voice recognition","volume":"27","author":"Yang","year":"2015","journal-title":"Adv. Mater."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"4236","DOI":"10.1021\/acsnano.5b00618","article-title":"Ultrathin, Rollable, Paper-based triboelectric nanogenerator for acoustic energy harvesting and self-powered sound recording","volume":"9","author":"Fan","year":"2015","journal-title":"ACS Nano"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"1605973","DOI":"10.1002\/adma.201605973","article-title":"An ultrasensitive, visco-poroelastic artificial mechanotransducer skin inspired by piezo2 protein in mammalian merkel cells","volume":"29","author":"Jin","year":"2017","journal-title":"Adv. Mater."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"e1500661","DOI":"10.1126\/sciadv.1500661","article-title":"Fingertip skin-inspired microstructured ferroelectric skins discriminate static\/dynamic pressure and temperature stimuli","volume":"1","author":"Park","year":"2015","journal-title":"Sci. Adv."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"4496","DOI":"10.1038\/ncomms5496","article-title":"Conformable amplified lead zirconate titanate sensors with enhanced piezoelectric response for cutaneous pressure monitoring","volume":"5","author":"Dagdeviren","year":"2014","journal-title":"Nat. Commun."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"4689","DOI":"10.1021\/nn500441k","article-title":"Giant tunneling piezoresistance of composite elastomers with interlocked microdome arrays for ultrasensitive and multimodal electronic skins","volume":"8","author":"Park","year":"2014","journal-title":"ACS Nano"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"748","DOI":"10.1002\/adma.201504335","article-title":"Body-attachable and stretchable multisensors integrated with wirelessly rechargeable energy storage devices","volume":"28","author":"Kim","year":"2016","journal-title":"Adv. Mater."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"222","DOI":"10.1038\/nature14002","article-title":"Ultrasensitive mechanical crack-based sensor inspired by the spider sensory system","volume":"516","author":"Kang","year":"2014","journal-title":"Nature"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"8130","DOI":"10.1002\/adma.201602425","article-title":"Dramatically enhanced mechanosensitivity and signal-to-noise ratio of nanoscale crack-based sensors: Effect of crack depth","volume":"28","author":"Park","year":"2016","journal-title":"Adv. Mater."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"23592","DOI":"10.1016\/j.ceramint.2020.06.131","article-title":"Flexible and high-sensitivity piezoresistive sensor based on MXene composite with wrinkle structure","volume":"46","author":"Yan","year":"2020","journal-title":"Ceram. Int."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1606066","DOI":"10.1002\/adfm.201606066","article-title":"Flexible and Highly Sensitive Pressure Sensors Based on Bionic Hierarchical Structures","volume":"27","author":"Jian","year":"2017","journal-title":"Adv. Funct. Mater."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"796","DOI":"10.1002\/adma.201302869","article-title":"A Flexible Bimodal Sensor Array for Simultaneous Sensing of Pressure and Temperature","volume":"26","author":"Tien","year":"2014","journal-title":"Adv. Mater."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"1336","DOI":"10.1002\/adma.201304248","article-title":"Silk-Molded Flexible, Ultrasensitive, and Highly Stable Electronic Skin for Monitoring Human Physiological Signals","volume":"26","author":"Wang","year":"2014","journal-title":"Adv. Mater."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"e1800819","DOI":"10.1002\/smll.201800819","article-title":"Multiscale Hierarchical Design of a Flexible Piezoresistive Pressure Sensor with High Sensitivity and Wide Linearity Range","volume":"14","author":"Shi","year":"2018","journal-title":"Small"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"4086","DOI":"10.1021\/acsami.7b16611","article-title":"Highly Sensitive and Ultrastable Skin Sensors for Biopressure and Bioforce Measurements Based on Hierarchical Microstructures","volume":"10","author":"Sun","year":"2018","journal-title":"ACS Appl. Mater. Interfaces"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"1700586","DOI":"10.1002\/aelm.201700586","article-title":"A Highly Sensitive Flexible Capacitive Tactile Sensor with Sparse and High-Aspect-Ratio Microstructures","volume":"4","author":"Wan","year":"2018","journal-title":"Adv. Electron. Mater."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"7354","DOI":"10.1109\/JSEN.2020.2978655","article-title":"High-Sensitivity Flexible Pressure Sensor With Low Working Voltage Based on Sphenoid Microstructure","volume":"20","author":"Wang","year":"2020","journal-title":"IEEE Sens. J."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"9974","DOI":"10.1021\/acsnano.5b03510","article-title":"Stretchable Array of Highly Sensitive Pressure Sensors Consisting of Polyaniline Nanofibers and Au-Coated Polydimethylsiloxane Micropillars","volume":"9","author":"Park","year":"2015","journal-title":"ACS Nano"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"795","DOI":"10.1038\/nmat3380","article-title":"A flexible and highly sensitive strain-gauge sensor using reversible interlocking of nanofibres","volume":"11","author":"Pang","year":"2012","journal-title":"Nat. Mater."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"5300","DOI":"10.1002\/adma.201600408","article-title":"Linearly and Highly Pressure-Sensitive Electronic Skin Based on a Bioinspired Hierarchical Structural Array","volume":"28","author":"Bae","year":"2016","journal-title":"Adv. Mater."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"3451","DOI":"10.1002\/adma.201305182","article-title":"Highly Stretchable Resistive Pressure Sensors Using a Conductive Elastomeric Composite on a Micropyramid Array","volume":"26","author":"Choong","year":"2014","journal-title":"Adv. Mater."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"1800182","DOI":"10.1002\/aelm.201800182","article-title":"Piezoresistive E-Skin Sensors Produced with Laser Engraved Molds","volume":"4","author":"Pinela","year":"2018","journal-title":"Adv. Electron. Mater."},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"dos Santos, A., Pinela, N., Alves, P., Santos, R., Farinha, R., Fortunato, E., Martins, R., Aguas, H., and Igreja, R. (2019). E-Skin Bimodal Sensors for Robotics and Prosthesis Using PDMS Molds Engraved by Laser. Sensors, 19.","DOI":"10.3390\/s19040899"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"786","DOI":"10.1109\/TED.2020.3045962","article-title":"Piezoresistive Electronic-Skin Sensors Produced with Self-Channeling Laser Microstructured Silicon Molds","volume":"68","author":"Su","year":"2021","journal-title":"IEEE Trans. Electron Devices"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"112907","DOI":"10.1016\/j.sna.2021.112907","article-title":"Robust physiological signal monitoring by a flexible piezoresistive sensor microstructured with filamentating laser pulses","volume":"331","author":"Su","year":"2021","journal-title":"Sens. Actuators A-Phys."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"611","DOI":"10.1007\/s00500-016-2426-1","article-title":"Segmentation of carbon nanotube images through an artificial neural network","volume":"21","author":"Trujillo","year":"2017","journal-title":"Soft Comput."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"923","DOI":"10.1007\/s12652-020-02108-6","article-title":"Artificial intelligence neural network based on intelligent diagnosis","volume":"12","author":"Li","year":"2021","journal-title":"J. Ambient. Intell. Humaniz. Comput."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"550","DOI":"10.1016\/j.ijepes.2010.12.009","article-title":"Electricity price forecasting using artificial neural networks","volume":"33","author":"Singhal","year":"2011","journal-title":"Int. J. Electr. Power Energy Syst."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"301","DOI":"10.1016\/j.nanoen.2017.09.024","article-title":"Low-voltage, high-sensitivity and high-reliability bimodal sensor array with fully inkjet-printed flexible conducting electrode for low power consumption electronic skin","volume":"41","author":"Kim","year":"2017","journal-title":"Nano Energy"},{"key":"ref_31","doi-asserted-by":"crossref","unstructured":"Yan, Z.-Y., Liu, J.-Y., and Niu, J.-R. (2021). Research of a Novel Ag Temperature Sensor Based on Fabric Substrate Fabricated by Magnetron Sputtering. Materials, 14.","DOI":"10.3390\/ma14206014"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"2000262","DOI":"10.1002\/admt.202000262","article-title":"Deep-Learning-Enabled MXene-Based Artificial Throat: Toward Sound Detection and Speech Recognition","volume":"5","author":"Jin","year":"2020","journal-title":"Adv. Mater. Technol."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/22\/3\/759\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T22:04:13Z","timestamp":1760133853000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/22\/3\/759"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,1,19]]},"references-count":32,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2022,2]]}},"alternative-id":["s22030759"],"URL":"https:\/\/doi.org\/10.3390\/s22030759","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,1,19]]}}}