Results 51 to 60 of about 140,570 (332)

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

Graphene/poly(vinylidene fluoride) dielectric composites with polydopamine as interface layers

Science and Engineering of Composite Materials, 2017
A poly(vinylidene fluoride) (PVDF) nanocomposite incorporated with polydopamine-coated reduced graphene oxide (rGO@PDOPA) nanosheets has been developed with high dielectric permittivity and low loss for electricity storage applications.
Li Hairong, Xu Chenglong, Chen Zongyi, Jiang Ming, Xiong Chuanxi   +4 more
doaj   +1 more source

Onsager model for a variable dielectric permittivity near an interface

, 2003
Using a generalisation of an Onsager type approach, we are able to predict a dielectric permittivity profile of an inhomogeneous dipolar fluid in the presence of a dielectric interface.
Ballenegger, Vincent, Finken, Reimar, Hansen, Jean-Pierre   +2 more
core   +1 more source

Composites of Shellac and Silver Nanowires as Flexible, Biobased, and Corrosion‐Resistant Transparent Conductive Electrodes

Advanced Functional Materials, EarlyView.
Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein, Tiago Carneiro Gomes, Eliza Ng, Simon Rondeau‐Gagné, Tricia Breen Carmichael   +4 more
wiley   +1 more source

Dielectric Behavior of Low Microwave Loss Unit Cell for All Dielectric Metamaterial

International Journal of Antennas and Propagation, 2015
With a deep study of the metamaterial, its unit cells have been widely extended from metals to dielectrics. The dielectric based unit cells attract much attention because of the advantage of easy preparation, tunability, and higher frequency response ...
Tianhuan Luo, Bo Li, Qian Zhao, Ji Zhou
doaj   +1 more source

High Dielectric Permittivity in AFe$_{1 / 2}$B$_{1 / 2}$O$_{3}$ Nonferroelectric Perovskite Ceramics (A - Ba, Sr, Ca; B - Nb, Ta, Sb)

, 2002
AFe$_{1 / 2}$B$_{1 / 2}$O$_{3}$(A- Ba, Sr, Ca; B-Nb, Ta, Sb) ceramics were synthesized and temperature dependencies of the dielectric permittivity were measured at different frequencies.
A. S. Bogatin, I. P. Raevski, Ikeda N., Kolev N., L. Jastrabik, Lemanov V. V., M. A. Malitskaya, Politova E. D., Raevski I. P., Raevski I. P., Raevski I. P., Raevski I. P., Raevski I. P., Raevski I. P., Raevski I. P., Raevski I. P., Raevskii I. P., S. A. Prosandeev, Saha S., Yamaoka N.   +19 more
core   +1 more source

Nanodielectric mapping of a model polystyrene-poly(vinyl acetate) blend by electrostatic force microscopy [PDF]

, 2010
We present a simple method to quantitatively image the dielectric permittivity of soft materials at nanoscale using electrostatic force microscopy (EFM) by means of the double pass method. The EFM experiments are based on the measurement of the frequency
Alegría, Angel, Arinero, Richard, Colmenero, Juan, Lévêque, Gérard, Riedel, Clément, Schwartz, Gustavo Ariel, Tordjeman, Philippe   +6 more
core   +4 more sources

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

Advanced Functional Materials, EarlyView.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva, Giulio Fatti, Emanuel Carlos, Guilherme Ferreira, Sumita Goswami, Suman Nandy, Luiz H. C. Mattoso, Elvira Fortunato, Caio G. Otoni, Rodrigo Martins   +9 more
wiley   +1 more source

Kinetic and ion pairing contributions in the dielectric spectra of electrolyte aqueous solutions

, 2014
Understanding dielectric spectra can reveal important information about the dynamics of solvents and solutes from the dipolar relaxation times down to electronic ones.
A. Arnold, Allen M. P., C. Holm, M. Sega, Press W. H., S. S. Kantorovich   +5 more
core   +1 more source

Gain assisted nanocomposite multilayers with near zero permittivity modulus at visible frequencies [PDF]

, 2011
We have fabricated a layered nano-composite by alternating metal and gain medium layers, the gain dielectric consisting of a polymer incorporating optically pumped dye molecules.
Ciattoni, Alessandro, Di Falco, Andrea, Rizza, Carlo   +2 more
core   +2 more sources