Impedance spectroscopy and piezoresponse force microscopy analysis of lead-free (1 − x) K0.5Na0.5NbO3 − xLiNbO3 ceramics

2013 ◽  
Vol 13 (2) ◽  
pp. 430-440 ◽  
Author(s):  
Radheshyam Rai ◽  
Indrani Coondoo ◽  
Rashmi Rani ◽  
Igor Bdikin ◽  
Seema Sharma ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Piezoresponse Force Microscopy ◽  
Lead Free ◽  
Force Microscopy ◽  
Microscopy Analysis

Microstructure and local electrical investigation of lead-free α-La2WO6 ferroelectric thin films by piezoresponse force microscopy

2016 ◽  
Vol 617 ◽  
pp. 76-81
Author(s):  
Thomas Carlier ◽  
Marie-Hélène Chambrier ◽  
Anthony Ferri ◽  
Alexandre Bayart ◽  
Pascal Roussel ◽  
...  
Keyword(s):  
Thin Films ◽  
Piezoresponse Force Microscopy ◽  
Ferroelectric Thin Films ◽  
Lead Free ◽  
Force Microscopy ◽  
Electrical Investigation

scholarly journals Nanoscale mapping of heterogeneity of the polarization reversal in lead-free relaxor–ferroelectric ceramic composites

Nanoscale ◽  
2016 ◽  
Vol 8 (4) ◽  
pp. 2168-2176 ◽  
Author(s):  
D. Gobeljic ◽  
V. V. Shvartsman ◽  
A. Belianinov ◽  
B. Okatan ◽  
S. Jesse ◽  
...  
Keyword(s):  
Piezoresponse Force Microscopy ◽  
Polarization Switching ◽  
Ferroelectric Ceramic ◽  
Ceramic Composites ◽  
Relaxor Ferroelectric ◽  
Lead Free ◽  
Polarization Reversal ◽  
Ferroelectric Relaxor ◽  
Force Microscopy

Heterogeneity of domain patterns and polarization switching in ferroelectric–relaxor ceramic composites were addressed using piezoresponse force microscopy.

Development of lead-free materials for piezoelectric energy harvesting

2011 ◽  
Vol 1325 ◽  
Author(s):  
R. Rai ◽  
I. Coondoo ◽  
R. P. Lopes ◽  
I. Bdikin ◽  
R. Ayouchi ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Piezoelectric Materials ◽  
Mechanical Energy ◽  
Piezoresponse Force Microscopy ◽  
Solid State Reaction Method ◽  
Lead Free ◽  
Piezoelectric Energy Harvesting ◽  
Force Microscopy ◽  
Environment And Health ◽  
Piezoelectric Energy

ABSTRACTMechanical energy harvesting from ambient vibrations is an attractive renewable source of energy for various applications. Prior research was solely based on lead-containing materials which are detrimental to the environment and health. Therefore, lead-free materials are becoming more attractive for harvesting applications. The present work is focused on the development of lead-free piezoelectric materials based on solid solution having composition (KNa)NbO3-xABO3, (where A = Li, and B = Nb; x = 0, 5, 5.5, 6, and 6.5 wt%). The solid solutions of the above ceramics were prepared by using solid-state reaction method. The X-ray diffraction spectra exhibited single phase formation and good crystallinity with LiNbO3 addition up to x = 6.5 wt%. Dielectric studies reveal that the composition with LiNbO3 = 6.5 wt% exhibits superior properties suitable for piezoelectric energy harvesting applications. The nanoscale piezoelectric data obtained with piezoresponse force microscopy provide a direct evidence of strong piezoelectricity with LN doping. The best piezoelectric properties are obtained for the composition K0.5Na0.5NbO3 – 6.5%LiNbO3.

TUNING PROPERTIES AND MORPHOLOGY IN HIGH VINYL CONTENT SBS BLOCK COPOLYMER, A THERMOPLASTIC ELASTOMER VIA THIOL-ENE MODIFICATION

2017 ◽  
Vol 90 (3) ◽  
pp. 550-561 ◽  
Author(s):  
Prithwiraj Mandal ◽  
Siva Ponnupandian ◽  
Soumyadip Choudhury ◽  
Nikhil K. Singha
Keyword(s):  
Block Copolymer ◽  
Thermoplastic Elastomer ◽  
Atomic Force Microscopy Analysis ◽  
Ene Reaction ◽  
Force Microscopy ◽  
Atomic Force ◽  
Microscopy Analysis ◽  
Styrene Butadiene Styrene ◽  
Styrene Butadiene ◽  
Butadiene Styrene

ABSTRACT Thiol-ene modification of high vinyl content thermoplastic elastomeric styrene butadiene styrene (SBS) block copolymer (BCP) was carried out using different thiolating agents in toluene at 70 °C. 1H NMR analysis confirmed the participation of vinyl double bond in the thiol-ene modification reaction of SBS. Surface morphology of the block copolymers evaluated by atomic force microscopy analysis showed higher roughness after the thiol-ene reaction. The thiol-modified SBS block copolymer showed better adhesion strength and oil resistance properties than the pristine SBS.

scholarly journals Atomic force microscopy analysis of native infectious and inactivated SARS-CoV-2 virions

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sébastien Lyonnais ◽  
Mathilde Hénaut ◽  
Aymeric Neyret ◽  
Peggy Merida ◽  
Chantal Cazevieille ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Native Conformation ◽  
Force Microscopy ◽  
Enveloped Virus ◽  
Atomic Force ◽  
Afm Imaging ◽  
Level 3 ◽  
Microscopy Analysis ◽  
Virus Morphology ◽  
Nanoscale Level

AbstractSARS-CoV-2 is an enveloped virus responsible for the Coronavirus Disease 2019 (COVID-19) pandemic. Here, single viruses were analyzed by atomic force microscopy (AFM) operating directly in a level 3 biosafety (BSL3) facility, which appeared as a fast and powerful method to assess at the nanoscale level and in 3D infectious virus morphology in its native conformation, or upon inactivation treatments. AFM imaging reveals structurally intact infectious and inactivated SARS-CoV-2 upon low concentration of formaldehyde treatment. This protocol combining AFM and plaque assays allows the preparation of intact inactivated SARS-CoV-2 particles for safe use of samples out of level 3 laboratory to accelerate researches against the COVID-19 pandemic. Overall, we illustrate how adapted BSL3-AFM is a remarkable toolbox for rapid and direct virus analysis based on nanoscale morphology.

In-plane polarization contribution to the vertical piezoresponse force microscopy signal mediated by the cantilever “buckling”

2021 ◽  
Vol 543 ◽  
pp. 148808
Author(s):  
D.O. Alikin ◽  
L.V. Gimadeeva ◽  
A.V. Ankudinov ◽  
Q. Hu ◽  
V.Ya. Shur ◽  
...  
Keyword(s):  
Piezoresponse Force Microscopy ◽  
Force Microscopy ◽  
Polarization Contribution
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