Results 51 to 60 of about 207,215 (341)
Imprinting the complex dielectric permittivity of liquids into the spintronic terahertz emission [PDF]
, 2021 Vasileios Balos +4 more
openalex +1 more source
Nontrivial dependence of dielectric stiffness and SHG on dc bias in relaxors and dipole glasses
, 2004 Dielectric permittivity and Second Harmonic Generation (SHG) studies in the field-cooled mode show a linear dependence of dielectric stiffness (inverse dielectric permittivity) on dc bias in PMN-PT crystals and SHG intensity in KTaO$_{3}$:Li at small Li ...
A. S. Emelyanov +15 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 +2 more
core +2 more sources
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 +9 more
wiley +1 more source
Complementary Metamaterial Sensor for Nondestructive Evaluation of Dielectric Substrates
Sensors, 2019 In this paper, complementary metamaterial sensor is designed for nondestructive evaluation of dielectric substrates. The design concept is based on electromagnetic stored energy in the complementary circular spiral resonator (CCSR), which is concentrated
Tanveer ul Haq +3 more
doaj +1 more source
, 2000 We describe the use of a near-field scanning microwave microscope to image the permittivity and tunability of bulk and thin film dielectric samples on a length scale of about 1 micron. The microscope is sensitive to the linear permittivity, as well as to
A. Stanishevsky +8 more
core +1 more source
Electrically Tunable On‐Chip Topological Photonics with Integrated Carbon Nanotubes
Advanced Functional Materials, EarlyView.This work demonstrates electrically tunable on‐chip topological THz devices by integrating 2D carbon nanotube (CNT) sheets with valley‐Hall photonic crystals, enabling broadband transmission modulation (71% modulation depth) and tunable narrowband filtering (0.54 GHz shift) through electrically induced thermal tuning. This advancement paves the way for
Jifan Yin +7 more
wiley +1 more source
Low-Cost Oil Quality Sensor Based on Changes in Complex Permittivity
Sensors, 2011 Real time oil quality monitoring techniques help to protect important industry assets, minimize downtime and reduce maintenance costs. The measurement of a lubricant’s complex permittivity is an effective indicator of the oil degradation process and it ...
Mark Hadfield, Angel Torres Pérez
doaj +1 more source
Non-resonant Permittivity Measurement Methods [PDF]
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2017 La medición de las propiedades dieléctricas de los materiales se ha aplicado en pruebas no destructivas, medición de humedad, análisis de suelos e incluso detección de cáncer. Los métodos se han desarrollado durante más de 70 años en base a la interacción de las ondas electromagnéticas con el material bajo prueba.
S. L. S. Severo +3 more
openaire +5 more sources
Condensation of the atomic relaxation vibrations in lead-magnesium-niobate at $T=T^*$
, 2013 We present neutron diffraction, dielectric permittivity and photoconductivity measurements, evidencing that lead-magnesium niobate experiences a diffuse phase transformation between the spherical glass and quadrupole glass phases, in the temperature ...
Chen, Haydn +6 more
core +2 more sources