PMID- 35971192
OWN - NLM
STAT- MEDLINE
DCOM- 20220929
LR  - 20221109
IS  - 1613-6829 (Electronic)
IS  - 1613-6810 (Linking)
VI  - 18
IP  - 39
DP  - 2022 Sep
TI  - Dual-Scale Porous Composite for Tactile Sensor with High Sensitivity over an 
      Ultrawide Sensing Range.
PG  - e2203193
LID - 10.1002/smll.202203193 [doi]
AB  - Porous structures have been utilized in tactile sensors to improve sensitivity 
      owing to their excellent deformability. Recently, tactile sensors using porous 
      structures have been used in practical applications, such as bio-signal 
      monitoring. However, highly sensitive responses are limited to the low-pressure 
      range, and their sensitivity significantly decreases in a higher-pressure range. 
      Several approaches for developing tactile sensors with high sensitivity overing a 
      wide pressure range have been proposed; however, achieving high sensitivity and 
      wide sensing range remains a crucial challenge. This report presents a carbon 
      nanotube (CNT)-coated CNT-polydimethylsiloxane (PDMS) composite having dual-scale 
      pores for tactile sensors with high sensitivity over a wide pressure range. The 
      porous polymer frame formed with dense pores of dual sizes facilitates the 
      closure of large and small pores at low and high pressures, respectively. This 
      results in an apparent increase in the number of contact points between the 
      CNT-CNT at the pores even under a wide pressure range. Furthermore, the 
      piezoresistivity of the CNT-PDMS composite contributes to achieving a high 
      sensitivity of the tactile sensor over a wide pressure range. Based on these 
      mechanisms, various human movements over a broad pressure spectrum are monitored 
      to investigate the practical usefulness of the sensor.
CI  - (c) 2022 Wiley-VCH GmbH.
FAU - Bae, Kyubin
AU  - Bae K
AD  - School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, 
      Seoul, 03722, Republic of Korea.
FAU - Kim, Minhyeong
AU  - Kim M
AD  - School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, 
      Seoul, 03722, Republic of Korea.
FAU - Kang, Yunsung
AU  - Kang Y
AD  - School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, 
      Seoul, 03722, Republic of Korea.
FAU - Sim, Sangjun
AU  - Sim S
AD  - School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, 
      Seoul, 03722, Republic of Korea.
FAU - Kim, Wondo
AU  - Kim W
AD  - School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, 
      Seoul, 03722, Republic of Korea.
FAU - Pyo, Soonjae
AU  - Pyo S
AD  - Department of Mechanical System Design Engineering, Seoul National University of 
      Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul, 01811, Republic of 
      Korea.
FAU - Kim, Jongbaeg
AU  - Kim J
AUID- ORCID: 0000-0003-4434-5871
AD  - School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, 
      Seoul, 03722, Republic of Korea.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20220815
PL  - Germany
TA  - Small
JT  - Small (Weinheim an der Bergstrasse, Germany)
JID - 101235338
RN  - 0 (Dimethylpolysiloxanes)
RN  - 0 (Nanotubes, Carbon)
RN  - 63148-62-9 (baysilon)
SB  - IM
MH  - Dimethylpolysiloxanes
MH  - Humans
MH  - *Nanotubes, Carbon/chemistry
MH  - Porosity
MH  - Touch
OTO - NOTNLM
OT  - high sensitivity
OT  - human-motion detection
OT  - large sensing range
OT  - porous structure
OT  - tactile sensors
EDAT- 2022/08/16 06:00
MHDA- 2022/09/30 06:00
CRDT- 2022/08/15 23:43
PHST- 2022/07/11 00:00 [revised]
PHST- 2022/05/23 00:00 [received]
PHST- 2022/08/16 06:00 [pubmed]
PHST- 2022/09/30 06:00 [medline]
PHST- 2022/08/15 23:43 [entrez]
AID - 10.1002/smll.202203193 [doi]
PST - ppublish
SO  - Small. 2022 Sep;18(39):e2203193. doi: 10.1002/smll.202203193. Epub 2022 Aug 15.