DFLMF-ISTD: Infrared small object detection network based on decoupled feature learning and multi-scale feature fusion

Infrared Physics & Technology, Journal Year: 2025, Volume and Issue: 149, P. 105851 - 105851

Published: May 9, 2025

Language: Английский

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Upconversion Luminescence Properties and Temperature Sensing Characteristics of Tm³⁺, Yb³⁺-codoped SrAl₂Si₂O₈ Phosphors with High Thermometric Sensitivities

ECS Journal of Solid State Science and Technology, Journal Year: 2024, Volume and Issue: 13(3), P. 037004 - 037004

Published: March 11, 2024

In this paper, a SrAl 2 Si O 8 :Tm 3+ ,Yb upconversion (UC) phosphor was prepared with high-temperature solid-phase method, and proved that the strontium feldspar structure an excellent UC matrix. The Tm were shown to have maximum relative thermometric sensitivity (Sr) of 1.67% K −1 at 298 absolute (Sa) 1.34% 573 K. non-thermally coupled energy level corresponded thermometry 2.4% 13% 423 use fluorescence intensity ratio nonthermally levels for temperature measurements improved measurement same material. These results indicated has good sensing performance wide range stability potential applications in first biological window.

Language: Английский

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3D Printing-Assisted Honeycomb-Structured Bricklike Aerogels Applied for Infrared Stealth with Good Thermal Management

ACS Applied Polymer Materials, Journal Year: 2024, Volume and Issue: 6(22), P. 13828 - 13840

Published: Nov. 6, 2024

Delicate structure design with lightweightness and good thermal management for infrared (IR) stealth are two important factors since relying solely on low emissivity surfaces to suppress radiation will lead heat buildup erratic performance. Inspired by honeycomb bricks, an IR aerogel of MXene@poly(vinyl alcohol) (PVA)/phase change material (PCM) is prepared a 3D-printed mold, freeze-drying, vacuum impregnation. The as-prepared aerogels have excellent properties including high latent (105.3 J/g), compressive modulus (7.844 MPa, 80%), (0.273, 8–14 μm). Benefiting from the brick-like structure, which integrated insulation, absorption, reduction strategies, performance outstanding they consistent surrounding environment even when exposed source at 100 120 °C 5 min, temperatures reaching equilibrium maintained only 30.9 33.8 °C, respectively. remarkable long-term use also confirmed Comsol transfer simulation. Furthermore, possess EMI shielding effect (SE), SET = 43.3 dB in X-band. Therefore, this multimodal composite expected be potential candidate field stealth.

Language: Английский

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Foldable sandwich fabric-based composites with thermal insulation and low emissivity for highly efficient infrared stealth

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1006, P. 176383 - 176383

Published: Sept. 7, 2024

Language: Английский

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