Results 171 to 180 of about 5,988 (248)

Spacer‐Less Substrate‐Integrated Metasurface for Near‐Unity Terahertz Absorption

open access: yesAdvanced Optical Materials, Volume 14, Issue 29, 7 August 2026.
ABSTRACT Although conventional metal‐insulator‐metal (MIM) terahertz (THz) absorbers can provide near‐unity absorption, their multilayer stacks inevitably introduce additional thickness, mass, and residual stress, which limit their compatibility with THz thermal sensing platforms.
Zihao Zhao   +6 more
wiley   +1 more source

Study on the effects of terahertz radiation on gene networks of Escherichia coli by means of fluorescent biosensors. [PDF]

open access: yesBiomed Opt Express, 2020
Serdyukov DS   +7 more
europepmc   +1 more source

Cellulose as a Platform for Biodegradable Metasurfaces: THz Characterization and Fabrication

open access: yesAdvanced Sustainable Systems, Volume 10, Issue 8, August 2026.
The demand for sustainable THz technologies has motivated the development of biodegradable, flexible devices based on ethyl cellulose. Metal‐backed EC metasurfaces were analytically designed and fabricated to achieve near‐perfect THz absorption. Reflection‐mode THz spectroscopy confirmed resonant absorption at 0.576 and 0.411 THz, demonstrating the ...
Edoardo Negri   +7 more
wiley   +1 more source

Determination of Complex Permittivity of Analytes Using Terahertz Metamaterials

open access: yesAdvanced Theory and Simulations, Volume 9, Issue 8, August 2026.
Resonance frequency shifts (Δf) and transmission variations (ΔT) in THz metamaterials exhibit distinct sensitivities to dielectric properties of overlaid analytes. By combining these responses within a contour map framework, the real permittivity (ε′) and loss tangent (tan δ) of liquid analytes can be simultaneously determined, providing a rapid route ...
Ruixiang Zhu   +6 more
wiley   +1 more source

Impact Ionization Induced by Terahertz Radiation in HgTe Quantum Wells of Critical Thickness. [PDF]

open access: yesJ Infrared Millim Terahertz Waves, 2020
Hubmann S   +11 more
europepmc   +1 more source

Theoretical Investigation of the Structural Stability and Optoelectronic Properties of La2HfSe5

open access: yesAdvanced Theory and Simulations, Volume 9, Issue 8, August 2026.
La2HfSe5 is a stable, ductile, direct band‐gap semiconductor with strong visible‐range absorption, as revealed by comprehensive first‐principles calculations. Its structural, mechanical, and dynamical stability, together with favorable electronic and optical properties and robust Hf–Se bonding, highlight its strong potential for next‐generation ...
Elkana Rugut, Eric Maluta
wiley   +1 more source

Ultrafast Dynamics of Spin Current and Electron Temperature in Spintronic Terahertz Emitters

open access: yesAdvanced Science, Volume 13, Issue 45, 13 August 2026.
This work quantifies optical‐pump‐induced THz transmission variations to reveal electron and lattice temperature dynamics and presents time‐resolved THz spectral maps for sub‐picosecond analysis. A 63 ± 8 fs time lag between THz emission and laser excitation is identified, serving as an intrinsic parameter limiting the upper frequency of spintronic THz
Yifan Wang   +10 more
wiley   +1 more source

Exploring the Structural, Electronic, and Optical Characteristics of ZrSnO3 Through First‐Principles Calculations for Optoelectronics and Photocatalytic Applications

open access: yesElectrochemical Science Advances, Volume 6, Issue 4, August 2026.
ABSTRACT We performed first‐principles density functional theory calculations to methodically analyse the structural, mechanical, electronic, thermal, and optical properties of trigonal ZrSnO3 under external pressure up to 60 GPa with GGA‐PBE and HSE06 functionals.
Jahid Hasan   +6 more
wiley   +1 more source

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