PMID- 37513212
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20230801
IS  - 1420-3049 (Electronic)
IS  - 1420-3049 (Linking)
VI  - 28
IP  - 14
DP  - 2023 Jul 11
TI  - Flexible Microstructured Capacitive Pressure Sensors Using Laser Engraving and 
      Graphitization from Natural Wood.
LID - 10.3390/molecules28145339 [doi]
LID - 5339
AB  - In recent years, laser engraving has received widespread attention as a 
      convenient, efficient, and programmable method which has enabled high-quality 
      porous graphene to be obtained from various precursors. Laser engraving is often 
      used to fabricate the dielectric layer with a microstructure for capacitive 
      pressure sensors; however, the usual choice of electrodes remains poorly flexible 
      metal electrodes, which greatly limit the overall flexibility of the sensors. In 
      this work, we propose a flexible capacitive pressure sensor made entirely of 
      thermoplastic polyurethane (TPU) and laser-induced graphene (LIG) derived from 
      wood. The capacitive pressure sensor consisted of a flexible LIG/TPU electrode 
      (LTE), an LIG/TPU electrode with a microhole array, and a dielectric layer of TPU 
      with microcone array molded from a laser-engraved hole array on wood, which 
      provided high sensitivity (0.11 kPa(-1)), an ultrawide pressure detection range 
      (20 Pa to 1.4 MPa), a fast response (~300 ms), and good stability (>4000 cycles, 
      at 0-35 kPa). We believe that our research makes a significant contribution to 
      the literature, because the easy availability of the materials derived from wood 
      and the overall consistent flexibility meet the requirements of flexible 
      electronic devices.
FAU - Qu, Chenkai
AU  - Qu C
AD  - School of Optical Electrical and Computer Engineering, University of Shanghai for 
      Science and Technology, Shanghai 200093, China.
AD  - Shanghai Key Laboratory of Modern Optical Systems, Engineering Research Center of 
      Optical Instruments and Systems, Shanghai 200093, China.
FAU - Lu, Meilan
AU  - Lu M
AD  - School of Optical Electrical and Computer Engineering, University of Shanghai for 
      Science and Technology, Shanghai 200093, China.
AD  - Shanghai Key Laboratory of Modern Optical Systems, Engineering Research Center of 
      Optical Instruments and Systems, Shanghai 200093, China.
FAU - Zhang, Ziyan
AU  - Zhang Z
AD  - School of Optical Electrical and Computer Engineering, University of Shanghai for 
      Science and Technology, Shanghai 200093, China.
AD  - Shanghai Key Laboratory of Modern Optical Systems, Engineering Research Center of 
      Optical Instruments and Systems, Shanghai 200093, China.
FAU - Chen, Shangbi
AU  - Chen S
AD  - Inertial Technology Division, Shanghai Aerospace Control Technology Institute, 
      Shanghai 201109, China.
FAU - Liu, Dewen
AU  - Liu D
AD  - Inertial Technology Division, Shanghai Aerospace Control Technology Institute, 
      Shanghai 201109, China.
FAU - Zhang, Dawei
AU  - Zhang D
AD  - School of Optical Electrical and Computer Engineering, University of Shanghai for 
      Science and Technology, Shanghai 200093, China.
AD  - Shanghai Key Laboratory of Modern Optical Systems, Engineering Research Center of 
      Optical Instruments and Systems, Shanghai 200093, China.
FAU - Wang, Jing
AU  - Wang J
AD  - Department of Ultrasound Medicine, The First Affiliated Hospital, Zhejiang 
      University School of Medicine, Hangzhou 310006, China.
FAU - Sheng, Bin
AU  - Sheng B
AUID- ORCID: 0000-0002-9874-7705
AD  - School of Optical Electrical and Computer Engineering, University of Shanghai for 
      Science and Technology, Shanghai 200093, China.
AD  - Shanghai Key Laboratory of Modern Optical Systems, Engineering Research Center of 
      Optical Instruments and Systems, Shanghai 200093, China.
LA  - eng
GR  - 11105149/National Natural Science Foundation of China/
GR  - 19ZR1436100/Natural Science Foundation of Shanghai/
PT  - Journal Article
DEP - 20230711
PL  - Switzerland
TA  - Molecules
JT  - Molecules (Basel, Switzerland)
JID - 100964009
SB  - IM
PMC - PMC10385064
OTO - NOTNLM
OT  - capacitance sensors
OT  - flexible pressure sensor
OT  - laser engraving
OT  - laser-induced graphene
OT  - microstructures
COIS- The authors declare no conflict of interest.
EDAT- 2023/07/29 11:42
MHDA- 2023/07/29 11:43
PMCR- 2023/07/11
CRDT- 2023/07/29 01:34
PHST- 2023/05/18 00:00 [received]
PHST- 2023/06/28 00:00 [revised]
PHST- 2023/07/01 00:00 [accepted]
PHST- 2023/07/29 11:43 [medline]
PHST- 2023/07/29 11:42 [pubmed]
PHST- 2023/07/29 01:34 [entrez]
PHST- 2023/07/11 00:00 [pmc-release]
AID - molecules28145339 [pii]
AID - molecules-28-05339 [pii]
AID - 10.3390/molecules28145339 [doi]
PST - epublish
SO  - Molecules. 2023 Jul 11;28(14):5339. doi: 10.3390/molecules28145339.