Results 51 to 60 of about 77,174 (333)

Transformation of polarons to bipolarons in disordered matter

open access: yes, 2008
The polaron to bipolaron transition in disordered media under the influence of a broadband ac electric field is suggested: ac conductivity vs. frequency measurements in disordered media with inhomogeneous disorder induce spatio-temporal fluctuations of ...
Grammatikakis, J.   +2 more
core   +1 more source

Dual sensing-actuation artificial muscle based on polypyrrole-carbon nanotube composite [PDF]

open access: yes, 2017
Dual sensing artificial muscles based on conducting polymer are faradaic motors driven by electrochemical reactions, which announce the development of proprioceptive devices. The applicability of different composites has been investigated with the aim to
Fernández Otero, Toribio   +2 more
core   +2 more sources

Highly Conductive and Stretchable Photothermal CuSe Fiber for Wearable Electronics and Implantable Drug Release Systems

open access: yesAdvanced Functional Materials, EarlyView.
The conductive and stretchable photothermal CuSe fiber is fabricated for versatile biomedical applications. This CuSe fiber functions as a reliable wearable strain sensor and heater due to its high conductivity, stretchability and photothermal efficiency.
Kukro Yoon   +9 more
wiley   +1 more source

Doping, density of states and conductivity in polypyrrole and poly(p-phenylene vinylene) [PDF]

open access: yes, 2005
The evolution of the density of states (DOS) and conductivity as function of well controlled doping levels in OC_1C_10-poly(p-phenylene vinylene) [OC_1C_10-PPV] doped by FeCl_3 and PF_6, and PF_6 doped polypyrrole (PPy-PF_6 have been investigated.
A. K. Mukherjee   +4 more
core   +3 more sources

Design Strategies and Emerging Applications of High‐Performance Flexible Piezoresistive Pressure Sensors

open access: yesAdvanced Functional Materials, EarlyView.
Flexible piezoresistive pressure sensors underpin wearable and soft electronics. This review links sensing physics, including contact resistance modulation, quantum tunneling and percolation, to unified materials/structure design. We highlight composite and graded architectures, interfacial/porous engineering, and microstructured 3D conductive networks
Feng Luo   +2 more
wiley   +1 more source

Investigation of Electrochemical Coating of Polypyrrole in The Presence of Sodium Molybdate and Sodium Tungstate

open access: yesCumhuriyet Science Journal
Polymer composites are considered alternative material because they combine the advantages of all their components. Furthermore, polymer composites can exhibit unique electrochemical and physical properties, enabling their use in applications where ...
Asuman Ünal
doaj   +1 more source

The inhibitory effects of polypyrrole on the biofilm formation of Streptococcus mutans.

open access: yesPLoS ONE, 2019
Streptococcus mutans primary thrives on the biofilm formation on the tooth surface in sticky biofilms and under certain conditions can lead to carious lesions on the tooth surface.
Hidenobu Senpuku   +4 more
doaj   +1 more source

Glass Transition Temperature Depression at the Percolation Threshold in Carbon Nanotube-Epoxy Resin and Polypyrrole-Epoxy Resin Composites [PDF]

open access: yes, 2005
The glass transition temperatures of conducting composites, obtained by blending carbon nanotubes (CNTs) or polypyrrole (PPy) particles with epoxy resin, were investigated by using both differential scanning calorimetry (DSC) and dynamical mechanical ...
Ajayan   +24 more
core   +2 more sources

Anion-excluding polypyrrole films

open access: yesTalanta, 1991
A new method for modifying polypyrrole films is described. It involves complete oxidation of the film. The film produced is electronically non-conductive but ionically conductive, and has ion-selective properties based on the exclusion of anionic species.
Department of Chemistry, University of Florida, Gainsville, FL 32611, U.S.A. ( host institution )   +3 more
openaire   +3 more sources

Porosity Engineering of MXene Architectures: Toward High‐Performance Aqueous Electrochemical Energy Storage

open access: yesAdvanced Materials, EarlyView.
This review systematically summarizes recent advances in porosity engineering of MXenes, with a focused discussion on their structure‐governed energy storage properties. A critical analysis of structure–property relationships is presented across alkali‐ion batteries, multivalent‐ion batteries, and supercapacitors.
Shude Liu   +8 more
wiley   +1 more source

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