Results 61 to 70 of about 37,747 (222)

D31 The modification for mechanical properties of polylactic acid by Resin Flow Control Molding

open access: diamondThe Proceedings of Conference of Kyushu Branch, 2012
Naoki MORI   +4 more
openaire   +3 more sources

Two‐Dimensional Piezoelectric Nanomaterials for Nanoelectronics and Energy Harvesting

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Two‐Dimensional Piezoelectric Nanomaterials from properties to applications. Smart materials, especially piezoelectric materials, have gained popularity over the last two decades. Two‐dimensional (2D) piezoelectric materials exhibit attributes including great flexibility, ease of workability, extensive surface area, and many active sites, indicating ...
Yujun Cao   +12 more
wiley   +1 more source

Shifting tax burden to top income earners: what is the best way to reduce inequality?

open access: yesEconomics: Journal Articles, 2019
The authors analyze to what extent and how the tax burden should be shifted towards top income earners in order to reduce income inequality. Starting from Lambert and Aronson (Inequality decomposition analysis and the Gini coefficient revisited 1993) and
Onrubia Jorge   +2 more
doaj   +1 more source

Job duration and inequality

open access: yesEconomics: Journal Articles, 2020
As suggested by recent empirical evidence, one of the causes behind the widespread rise of inequality experienced by OECD countries in the last few decades may have been the increased flexibility of labor markets.
Chen Siyan, Desiderio Saul
doaj   +1 more source

Piezo-active composite systems based on porous polyvinylidene fluoride films and conducting polymer layers as electrodes

open access: yesPhysics of Complex Systems, 2021
The study has obtained composite systems containing porous polyvinylidene fluoride films and electroconducting polymers—polyaniline and polypyrrole. Porous supports were prepared by melt extrusion.
Галина Казимировна Ельяшевич   +4 more
doaj   +1 more source

A new dimension for piezo actuators: Free-form out-of-plane displacement of single piezo layers

open access: yes, 2013
We present a controlled mode of "topological" displacement of homogeneous piezo films that arises solely from an inhomogeneous in-plane strain due to an inhomogeneous polarization.
Brunne, Jens   +2 more
core   +1 more source

Improved performance of d31-mode needle-actuating transducer with PMN-PT piezocrystal [PDF]

open access: yes, 2018
Prototypes of a PZT-based ultrasound needle-actuating device have shown the ability to reduce needle penetration force and enhance needle visibility with color Doppler imaging during needle insertion for tissue biopsy and regional anesthesia. However, the demand for smaller, lighter devices and the need for high performance transducers have motivated ...
Jiang, Tingyi   +3 more
openaire   +2 more sources

Direct evidence for electrostriction‐enhanced piezoelectricity in poly(vinylidene fluoride‐co‐trifluoroethylene) random copolymers

open access: yesResponsive Materials, EarlyView.
Direct experimental evidence for electrostriction‐enhanced piezoelectricity is obtained for a quenched‐stretched‐annealed‐poled P(VDF‐TrFE) 52/48 mol.% random copolymer using time‐resolved small‐angle X‐ray scattering and wide‐angle X‐ray diffraction. Upon stretching up to 6% strain, the crystallinity (xc) increases 10% at the expense of the contents ...
Zhiwen Zhu   +5 more
wiley   +1 more source

Assessment of the Degree of the Divergence and Inequality of Household Income Distribution in Poland in the Years 2005–2013

open access: yesFolia Oeconomica Stetinensia, 2016
The increase in income and wealth inequality observed in the last decade of the twentieth century and the first decade of the twenty-first century is the subject of many analyses and discussions.
Gęstwicki Filip Edmund, Wędrowska Ewa
doaj   +1 more source

A homing problem for diffusion processes with control-dependent variance

open access: yes, 2004
Controlled one-dimensional diffusion processes, with infinitesimal variance (instead of the infinitesimal mean) depending on the control variable, are considered in an interval located on the positive half-line. The process is controlled until it reaches
Lefebvre, Mario
core   +1 more source

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