Design and Simulation of Circular Dielectric Resonator Antenna and Investigation of Structure, Microstructure, and Dielectric Properties of Mn‐Modified Sr2SnO4 DOI
Upendra Kumar,

Vedika Yadav,

Raj Kumar

et al.

physica status solidi (a), Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 22, 2024

Samples with compositions of Sr 2 Sn 1− x Mn O 4 (SSM) 0 ≤ 0.10 are prepared by conventional ceramic route via heat treatment at 1350 °C. Phase and crystal structure analysis is studied using X‐ray diffraction Rietveld refinement to confirm the crystallization samples in tetragonal under space group I4/mmm. The size‐strain plot method employed identify role on crystallite size/microstrain/dislocation density. scanning electron microscope energy‐dispersive spectroscopy a significant change grain size compositional homogeneity all Mn‐doping. Dielectric properties explained terms interfacial orientation polarization dipoles . Modulus studies show exclusion electrode contribution from electrical properties. single‐segment circular dielectric resonator antenna designed help experimental parameters showed two major resonant frequencies 3.6 6.7 GHz. reduction S11 parameter −10 dB reflection coefficient bandwidth Mn‐doping observed due overlapping E‐field line suggests application patch array for radar satellite communication applications. This study also enables explore SnO ‐based Ruddlesden Popper oxide mm‐wave

Language: Английский

Integration of Helical Carbon Microcoils on Toilet Paper Substrates for Low-cost and Broadband Microwave Absorption DOI
Chen Sun,

Tingkang Yuan,

Hao Zhang

et al.

Carbon, Journal Year: 2025, Volume and Issue: unknown, P. 120266 - 120266

Published: March 1, 2025

Language: Английский

Citations

0
Biomimetic Nanostructure Engineering of Ultralow Ir-Loading Electrocatalysts for Oxygen Reduction Reaction DOI

Han Diao,

Minghui Wang, Senjie Dong

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 23, 2025

Promoting the rate of oxygen reduction reaction (ORR) is critical for boosting overall energy efficiency flexible zinc–air batteries (FZABs). Inspired by nature, we designed "branch-leaf" like hierarchical porous carbon nanofibers with ultralow loadings Ir nanoparticles (NPs) derived from covalent–organic framework/metal–organic framework (COF/MOF) core–shell hybrids. The as-obtained Ir/FeZn-hierarchical (HPCNFs) showcase enhanced ORR performance, and loading reduces cost while maintaining catalytic capacity. Interestingly, FZABs assembled Ir/FeZn-HPCNFs deliver an impressive stable performance. This work provides a feasible approach designing cost-effective highly efficient electrocatalysts using in FZABs.

Language: Английский

Citations

0
Unveiling the role of N species in Co/NC catalysts for photothermal CO2 hydrogenation DOI
Pengcheng Wang,

Qingqing Jiang,

Xingyu Li

et al.

Molecular Catalysis, Journal Year: 2024, Volume and Issue: 570, P. 114686 - 114686

Published: Nov. 14, 2024

Language: Английский

Citations

1
Design and Simulation of Circular Dielectric Resonator Antenna and Investigation of Structure, Microstructure, and Dielectric Properties of Mn‐Modified Sr2SnO4 DOI
Upendra Kumar,

Vedika Yadav,

Raj Kumar

et al.

physica status solidi (a), Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 22, 2024

Samples with compositions of Sr 2 Sn 1− x Mn O 4 (SSM) 0 ≤ 0.10 are prepared by conventional ceramic route via heat treatment at 1350 °C. Phase and crystal structure analysis is studied using X‐ray diffraction Rietveld refinement to confirm the crystallization samples in tetragonal under space group I4/mmm. The size‐strain plot method employed identify role on crystallite size/microstrain/dislocation density. scanning electron microscope energy‐dispersive spectroscopy a significant change grain size compositional homogeneity all Mn‐doping. Dielectric properties explained terms interfacial orientation polarization dipoles . Modulus studies show exclusion electrode contribution from electrical properties. single‐segment circular dielectric resonator antenna designed help experimental parameters showed two major resonant frequencies 3.6 6.7 GHz. reduction S11 parameter −10 dB reflection coefficient bandwidth Mn‐doping observed due overlapping E‐field line suggests application patch array for radar satellite communication applications. This study also enables explore SnO ‐based Ruddlesden Popper oxide mm‐wave

Language: Английский

Citations

0