Results 21 to 30 of about 2,110,316 (348)

Kirigami–Origami‐Inspired Lead‐Free Piezoelectric Ceramics

open access: yesAdvanced Science, 2023
Kirigami‐ and oirigami‐inspired techniques have emerged as effective strategies for material structure design; however, the use of these techniques is usually limited to soft and deformable materials.
Zehuan Wang   +9 more
doaj   +1 more source

(K,Na)NbO3-based lead-free ceramics with enhanced temperature-stable piezoelectricity and efficient red luminescence

open access: yesJournal of Advanced Ceramics, 2023
There has been a surge of research interest in the promising lead-free potassium−sodium niobate (KNN)-based ceramics, applications of which could be significantly promoted by improving thermal stability of piezoelectricity.
Qing Liu   +3 more
doaj   +1 more source

Experimental and mechanical characterizations of a lead free solder alloy for electronic devices [PDF]

open access: yes, 2012
Electronic power modules devices are paramount components in the aeronautical,automotive and military applications. The solder layers are the most critical parts of the module and are usually subjected in their whole life to complex loading conditions ...
Alexis, Joël   +3 more
core   +2 more sources

Sodium lithium niobate lead-free piezoceramics for high-power applications: Fundamental, progress, and perspective

open access: yesJournal of Advanced Ceramics, 2023
With the capability of interconversion between electrical and mechanical energy, piezoelectric materials have been revolutionized by the implementation of perovskite-piezoelectric-ceramic-based studies over 70 years.
Chen-Bo-Wen LI   +9 more
doaj   +1 more source

Coaching millennial leaders: Life stage versus the times we live in [PDF]

open access: yesInternational Journal of Evidence Based Coaching and Mentoring, 2015
This paper presents the findings of a study focused on the experience of coaches when coaching millennial leaders (where millennials are those people born 1980-1999). Following a hermeneutic phenomenological approach using Interpretative Phenomenological
Helen Franklin
doaj  

Anomalous change in leakage and displacement currents after electrical poling on lead-free ferroelectric ceramics [PDF]

open access: yes, 2015
We report the polarization, displacement current and leakage current behavior of a trivalent nonpolar cation Al cation substituted lead free ferroelectric NBT-BT electroceramics with tetragonal phase and P4mm space group symmetry.
Ashok Kumar   +7 more
core   +2 more sources

Molten hydroxide synthesis as an alternative to molten salt sythesis for producing K0.5Na0.5NbO3 lead free ceramics [PDF]

open access: yes, 2011
Lead-free piezoelectric materials have grown in importance through increased environmental concern and subsequent EU and worldwide legislation, with the aspiration to reduce the use of Pb-based materials in all sectors. Integration of the next generation
Bortolani, Francesca   +3 more
core   +1 more source

Lead-Free Metal Halide Perovskites for Hydrogen Evolution from Aqueous Solutions

open access: yesNanomaterials, 2021
Metal halide perovskites (MHPs) exploitation represents the next big frontier in photovoltaic technologies. However, the extraordinary optoelectronic properties of these materials also call for alternative utilizations, such as in solar-driven ...
Vincenza Armenise   +3 more
doaj   +1 more source

Improving the functional properties of (K0.5Na0.5)NbO3 piezoceramics by acceptor doping [PDF]

open access: yes, 2015
ZrO2 and TiO2 modified lead-free (K0.5Na0.5)NbO3 (KNN) piezoelectric ceramics are prepared by a conventional solid-state reaction. The effect of acceptor doping on structural and functional properties is investigated.
Bril, X   +5 more
core   +3 more sources

Lead-free metal-halide double perovskites: from optoelectronic properties to applications

open access: yesNanophotonics, 2020
Lead (Pb) halide perovskites have witnessed highly promising achievements for high-efficiency solar cells, light-emitting diodes (LEDs), and photo/radiation detectors due to their exceptional optoelectronic properties.
Ghasemi Mehri   +10 more
doaj   +1 more source

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