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PubMed Journals Articles About "Global Smart Materials Market Size Study Product Piezoelectric" RSS

17:28 EST 25th January 2020 | BioPortfolio

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Showing "Global Smart materials Market Size study Product Piezoelectric" PubMed Articles 1–25 of 73,000+

Piezoelectric Energy Harvesting from Two-dimensional Boron Nitride Nanoflakes.

Two-dimensional piezoelectric hexagonal boron nitride nanoflakes (-BN NFs) were synthesized by a chemical exfoliation process and transferred onto an electrode line-patterned plastic substrate to characterize the energy harvesting ability of individual NF by external stress. A BN single NF produced the alternate piezoelectric output source of ~50 mV and ~30 pA when deformed by mechanical bendings. The piezoelectric voltage coefficient (g) of a BN single NF was experimentally determined to be 2.35 × 10 V·m...


Utilization of a magnetic field-driven microscopic motion for piezoelectric energy harvesting.

In spite of the recent advances in the development of high performing piezoelectric materials, their applications are typically limited to the direct conversion of mechanical impact energy to electrical energy, potentially risking mechanical failures. In this study, we developed piezoelectric poly(vinylidenefluoride-trifluoroethylene) (P(VDF-TrFE)) nanofibers integrated with SiO2-shelled Fe3O4 magnetic nanoparticles, to utilize magnetic energy to reliably drive the piezoelectric effect. Specifically, we sho...

Two-dimensional layered perovskite ferroelectric with giant piezoelectric voltage coefficient.

Piezoelectric sensors that can work in various conditions with superior performance are highly desirable with the arrival of the Internet of Things. For practical applications, large piezoelectric voltage coefficient g and high Curie temperature Tc are critical to the performance of piezoelectric sensors. Here, we report a two-dimensional perovskite ferroelectric (4-aminotetrahydropyran)2PbBr4 [(ATHP)2PbBr4] with a saturated polarization of 5.6 μC cm-2, high Tc of 503 K [above that of BaTiO3 (BTO, 393 K)],...


Piezoelectricity in Multilayer Black Phosphorus for Piezotronics and Nanogenerators.

Recently, piezoelectric characteristics have been a research focus for 2D materials because of their broad potential applications. Black phosphorus (BP) is a monoelemental 2D material predicted to be piezoelectric because of its highly directional properties and non-centrosymmetric lattice structure. However, piezoelectricity is hardly reported in monoelemental materials owing to their lack of ionic polarization, but piezoelectric generation is consistent with the non-centrosymmetric structure of BP. Theore...

Milli-Watt Power Harvesting from Dual Triboelectric and Piezoelectric Effects of Multifunctional Green and Robust Reduced Graphene Oxide/P(VDF-TrFE) Composite Flexible Films.

For a variety of mechanical energy harvesting as well as biomedical device applications, flexible energy devices are useful which require the development of environment-friendly and robust materials and devices. In this manuscript, we demonstrate a lead-free, facile, low-cost, sol-gel-processed reduced graphene oxide (rGO)/P(VDF-TrFE) nanocomposite with multipurpose capability demonstration as a piezoelectric nanogenerator (PENG) and hybrid piezoelectric triboelectric nanogenerator (HPTENG) devices. The str...

Characterization of an anti-foaming and fast-setting gypsum for dental stone.

An anti-foaming and fast-setting gypsum for dental stone recently became available on the market. Interestingly, this product can be mixed by the cocktail shaking method, providing a more convenient way to obtain high reproducibility when fabricating error-free study models for digital dentistry. The aim of this study is to investigate setting time, surface bubble formation, and other gypsum characteristics of three dental stone products with different mixing methods.

Vibration Damping Mechanism of Fiber Reinforced Composites with Integrated Piezoelectric Nanowires.

Here, both piezoelectric and non-piezoelectric nanostructures are used within fiber reinforced composites to improve the damping capabilities of the host material. This work investigates and isolates the role of both piezoelectricity and the mechanical redistribution of strain on the damping properties of fiber reinforced composites through the integration of a nanowire interphase between the fiber and matrix. Prior works have successfully studied and reported the effectiveness of modifying the surface of t...

Significance of electrostatic interactions due to surface potential in piezoresponse force microscopy.

Piezoresponse force microscopy (PFM) has gradually becomes indispensable tool to investigate local piezoelectric and ferroelectric properties in diverse material systems. However, numerous reports have shown that the PFM signal can originate from several non-piezoelectric origins. Among them, because the electrostatic interaction between the AFM tip/cantilever and sample surface can be readily involved, it can be the most important factor during PFM measurement. In particular, in materials with relatively l...

Conjuncted Pyro-Piezoelectric Effect for Self-Powered Simultaneous Temperature and Pressure Sensing.

Ferroelectric materials use both the pyroelectric effect and piezoelectric effect for energy conversion. A ferroelectric BaTiO -based pyro-piezoelectric sensor system is demonstrated to detect temperature and pressure simultaneously. The voltage signal of the device is found to enhance with increasing temperature difference with a sensitivity of about 0.048 V °C and with applied pressure with a sensitivity of about 0.044 V kPa . Moreover, no interference appears in the output voltage signals when piezoelec...

Probing Effective Out-of-Plane Piezoelectricity in van der Waals Layered Materials Induced by Flexoelectricity.

Many van der Waals layered 2D materials, such as h-BN, transition metal dichalcogenides (TMDs), and group-III monochalcogenides, have been predicted to possess piezoelectric and mechanically flexible natures, which greatly motivates potential applications in piezotronic devices and nanogenerators. However, only intrinsic in-plane piezoelectricity exists in these 2D materials and the piezoelectric effect is confined in odd-layers of TMDs. The present work is intent on combining the free-standing design and p...

Vitrimer-Cellulose Paper Composites: A New Class of Strong, Smart, Green and Sustainable Materials.

Vitrimer, the third category of polymer materials, combines the properties of traditional thermosets and thermoplastics and have gained much interest from industry since the first report in 2011. Currently, many researchers focus on the exploration of new chemistry for novel vitrimer synthesis, but pay less attention to fabrication of vitrimer composites based on known vitrimer systems. The latter can not only largely decrease the cost of vitrimers but also pro-vide a facile way to increase the variety of v...

Integrating drug- and formulation-related properties with gastrointestinal tract variability using a product-specific particle size approach: case example ibuprofen.

In the present study an in vitro-in vivo extrapolation of dissolution integrated to a physiologically-based pharmacokinetics modeling approach, considering a product-specific particle size distribution and a self-buffering effect of the drug, is introduced and appears to be a promising translational modeling strategy to support drug product development, manufacturing changes and setting clinically relevant specifications for immediate release formulations containing ibuprofen and other weak acids with simil...

Analysis of how compliant layers and encapsulation affect power generated from piezoelectric stacked composites for bone healing medical devices.

Use of piezoelectric materials to harvest energy from human motion is commonly investigated. Traditional piezoelectric materials are inefficient at low frequencies but composite structures can increase efficiency at these frequencies. Compliant layer adaptive composite stack (CLACS) is a new PZT structure designed for orthopedic implants to use loads generated during walking to provide electrical stimulation for bone healing. The CLACS structure increases power efficiency and structural properties as compar...

Noise utilization as an approach for reducing energy consumption in street lighting.

Noise is considered as one of the challenging problems in big cities. However, this noise could be utilized in producing energy especially in dense urban areas. Sound as a form of mechanical energy, it can be converted to electric energy through many approaches including heating, by using the diaphragm and through using piezoelectric materials. This research aims at utilizing noise through using piezoelectric materials as an approach of conversion to produce green sustainable electric energy that can be use...

Electrospun Poly(Vinylidene Fluoride-Trifluoroethylene) based Polymer Nanocomposite Fibers for Piezoelectric Nanogenerators.

The present work deals with the preparation, characterization and application of self-poled nanofibers using piezoelectric polymer poly(vinylidene fluoride-trifluoroethylene) P(VDF-TrFE), Zinc oxide (ZnO) and exfoliated graphene oxide (EGO) by electrospinning process. The characterization of nanofiber is carried by different techniques such as Field emission scanning electron microscopy (FESEM), Fourier transform Infra-red spectroscopy (FTIR), X-ray diffraction techniques (XRD) and Dynamic contact mode elec...

Hydrogel-based commercial products for biomedical applications: a review.

Hydrogels are hydrophilic polymer networks, able to absorb large amount of water, increasing their volume and showing a plethora of different material behaviors. Since their first practical application, dating from sixties of last century, they have been employed in several fields of biomedical sciences. After more than half a century of industrial uses, nowadays a lot of hydrogels are currently on the market for different purposes, and offering a wide spectra of features. In this review, even if it is virt...

Biocompatibility of (Ba,Ca)(Zr,Ti)O piezoelectric ceramics for bone replacement materials.

Total joint replacement implants are generally designed to physically mimic the biological environment to ensure compatibility with the host tissue. However, implant instability exposes patients to long recovery periods, high risk for revision surgeries, and high expenses. Introducing electrical stimulation to the implant site to accelerate healing is promising, but the cumbersome nature of wired devices is detrimental to the implant design. We propose a novel strategy to stimulate cells at the implant site...

Correction to "Flexible and Robust Piezoelectric Polymer Nanocomposites Based Energy Harvesters".

Ultrathin Ceramic Piezoelectric Films via Room-Temperature Electrospray Deposition of ZnO Nanoparticles for Printed GHz Devices.

High-frequency devices are key enablers of state-of-the-art electronics used in a wide and diverse range of exciting applications such as inertial navigation, communications, power conversion, medicine, and parallel computing. However, high-frequency additively manufactured piezoelectric devices are yet to be demonstrated due to shortcomings in the properties of the printed transducing material and the attainable film thickness. In this study, we report the first room-temperature-printed, piezoelectric, ult...

In vitro activity of imipenem-relebactam against Enterobacteriaceae and Pseudomonas aeruginosa isolated from intraabdominal and urinary tract infection samples - SMART Surveillance United States 2015-2017.

Antimicrobial resistance including multidrug-resistance (MDR) is increasing especially among Gram-negative bacilli. New agents are needed to treat infections caused by these pathogens. For this report, the activity of imipenem-relebactam was assessed against Gram-negative bacilli from intraabdominal infections (IAIs) and urinary tract infections (UTIs) submitted to the SMART (Study for Monitoring Antimicrobial Resistance Trends) global surveillance program in the United States from 2015 to 2017.

The correlation between smart device usage & sleep quality among UAE residents.

The usage of smart-devices has increased considerably both globally and specifically in Middle Eastern countries. Recently, it has been shown that 65% of United Arab Emirates (UAE) residents lack proper sleep. Several health aspects of the relationship between over usage of smart-devices and poor sleep quality have not been thoroughly investigated. This study aims to determine the correlation between smart-device overuse and sleep quality among UAE residents.

Micro/Nanostructure Engineering of Epitaxial Piezoelectric α-quartz Thin Films on Silicon.

The monolithic integration of sub-micron quartz structures on silicon substrates is a key issue for the future development of piezoelectric devices as prospective sensors with applications based on the operation in the high frequency range. However, to date it has not been possible to make existing quartz manufacturing methods compatible with integration on silicon and structuration by top down lithographic techniques. Here we report unprecedented large-scale fabrication of ordered arrays of piezoelectric e...

Does the size matter? A comparative analysis of the environmental impact of several packaged foods.

Nowadays, people consume high amount of packaged foods. The US Environmental Protection Agency encourages buying packaged products that have a reduced impact on the environment, however, the literature discussing the environmental impact of food packaging is scarce. Therefore, our goal was to perform an assessment of the greenhouse gas (GHG) emissions of the materials used for the packaging of foods, and to determine whether the size of the products, the main material used, and the commercial brand have any...

Bioinspired Smart Liquid Directional Transport Control.

Developments in bioinspired superwetting materials have triggered technological revolutions in many disciplines. One representative area is liquid directional transport dominated by interface properties, which has experienced rapid progress recently. To improve the controllability, scientists try to use the external field, such as light, electricity, thermal, and so on, to assist or achieve controllable smart, responsive liquid directional transport. However, there are still some intractable problems and ch...

Efficacy of Topical Botanical Treatment of Children With Mild to Moderate Atopic Dermatitis

Objective: The study was conducted to determine the efficacy of the botanical combination incorporated in Kamedis Eczema Therapy Cream (the test product) for children with mild to moderate atopic dermatitis. Design: The study was designed as an interventional, multi-center, double-blind, randomized, controlled study. Setting: Children subjects were a sub-population of the 108 combined population of adults and children evenly randomly divided into three treatment groups: test product, vehicle, and comparat...


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