PMID- 34209678
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20210727
IS  - 2079-4991 (Print)
IS  - 2079-4991 (Electronic)
IS  - 2079-4991 (Linking)
VI  - 11
IP  - 7
DP  - 2021 Jun 29
TI  - Characterizing and Optimizing Piezoelectric Response of ZnO Nanowire/PMMA 
      Composite-Based Sensor.
LID - 10.3390/nano11071712 [doi]
LID - 1712
AB  - Due to the outstanding coupling between piezoelectric and semiconducting 
      properties of zinc oxide nanowires, ZnO NW-based structures have been 
      demonstrating promising potential with respect to their applicability in 
      piezoelectric, piezotronic and piezo-phototronic devices. Particularly 
      considering their biocompatibility and biosafety for applications regarding 
      implantable medical detection, this paper proposed a new concept of piezoelectric 
      composite, i.e., one consisting of vertically aligned ZnO NW arrays and an 
      insulating polymer matrix. First, the finite element method (FEM) was employed to 
      drive optimization strategies through adjustment of the key parameters such as 
      Young's modules and the dielectric constant of the dielectric constituents, 
      together with the density and dimension of nanowire (NW) itself. Second, to 
      investigate the functionality of each individual layer of composite, different 
      designed structures were fabricated and characterized in terms of electrical and 
      piezoelectric properties. Next, experimental and simulation tests were performed, 
      indicating that the decreasing thickness of the top poly(methyl methacrylate) 
      layer (PMMA) can substantially enhance the piezoelectric sensitivity of the ZnO 
      NW composite. Besides the further benefit of no polarization being needed, our 
      material has a comparable charge coefficient (d(33)) with respect to other 
      lead-free alternatives (e.g., BaTiO(3)), confirming the high sensing abilities of 
      the developed structure based on vertically aligned ZnO NW arrays. Finally, a 
      time-varying model combining piezoelectricity and electric circuit modules was 
      investigated in detail, giving rise to an estimation of the d(33) coefficient for 
      ZnO NWs. Based on this study, the developed material is revealed to be highly 
      promising in medical applications, particularly regarding the FFR technique, 
      where coronary pressure can be measured through a piezoelectric sensor.
FAU - Zhang, Xiaoting
AU  - Zhang X
AD  - Electrical Department, Ladoua Campus, University Lyon, INSA-Lyon, LGEF, EA682, 
      F-69621 Villeurbanne, France.
FAU - Villafuerte, Jose
AU  - Villafuerte J
AUID- ORCID: 0000-0003-0207-1083
AD  - University Grenoble Alpes (iCampus), CNRS, Grenoble INP, LMGP, NanoMAT Team, 
      F-38000 Grenoble, France.
AD  - University Grenoble Alpes (iCampus), CNRS, Grenoble INP, Institute NEEL, F-38000 
      Grenoble, France.
FAU - Consonni, Vincent
AU  - Consonni V
AUID- ORCID: 0000-0003-0171-8746
AD  - University Grenoble Alpes (iCampus), CNRS, Grenoble INP, LMGP, NanoMAT Team, 
      F-38000 Grenoble, France.
FAU - Capsal, Jean-Fabien
AU  - Capsal JF
AUID- ORCID: 0000-0003-2904-8422
AD  - Electrical Department, Ladoua Campus, University Lyon, INSA-Lyon, LGEF, EA682, 
      F-69621 Villeurbanne, France.
FAU - Cottinet, Pierre-Jean
AU  - Cottinet PJ
AD  - Electrical Department, Ladoua Campus, University Lyon, INSA-Lyon, LGEF, EA682, 
      F-69621 Villeurbanne, France.
FAU - Petit, Lionel
AU  - Petit L
AD  - Electrical Department, Ladoua Campus, University Lyon, INSA-Lyon, LGEF, EA682, 
      F-69621 Villeurbanne, France.
FAU - Le, Minh-Quyen
AU  - Le MQ
AUID- ORCID: 0000-0001-5907-159X
AD  - Electrical Department, Ladoua Campus, University Lyon, INSA-Lyon, LGEF, EA682, 
      F-69621 Villeurbanne, France.
LA  - eng
PT  - Journal Article
DEP - 20210629
PL  - Switzerland
TA  - Nanomaterials (Basel)
JT  - Nanomaterials (Basel, Switzerland)
JID - 101610216
PMC - PMC8305847
OTO - NOTNLM
OT  - ZnO nanowires composite
OT  - electrical and piezoelectric characterizations
OT  - finite element method
OT  - medical application
OT  - piezoelectric sensor
COIS- The authors have no conflict of interest to declare.
EDAT- 2021/07/03 06:00
MHDA- 2021/07/03 06:01
PMCR- 2021/06/29
CRDT- 2021/07/02 01:39
PHST- 2021/05/24 00:00 [received]
PHST- 2021/06/16 00:00 [revised]
PHST- 2021/06/25 00:00 [accepted]
PHST- 2021/07/02 01:39 [entrez]
PHST- 2021/07/03 06:00 [pubmed]
PHST- 2021/07/03 06:01 [medline]
PHST- 2021/06/29 00:00 [pmc-release]
AID - nano11071712 [pii]
AID - nanomaterials-11-01712 [pii]
AID - 10.3390/nano11071712 [doi]
PST - epublish
SO  - Nanomaterials (Basel). 2021 Jun 29;11(7):1712. doi: 10.3390/nano11071712.