Effect of layer thickness on the thermoelectric properties of fully sprayed poly(3-hexylthiophene-2,5-diyl) thin films doped with chloroauric acid DOI Creative Commons
Benedikt Sochor, Simon Schraad, Linus F. Huber

et al.

Journal of Coatings Technology and Research, Journal Year: 2024, Volume and Issue: 21(6), P. 1945 - 1954

Published: Oct. 14, 2024

Abstract The thermoelectric properties of fully sprayed thin films poly(3-hexylthiophen-2,5-diyl) (P3HT) doped with chloroauric acid are investigated for different film thicknesses. thickness increases logarithmically increasing amount deposited material on the surfaces. Both electrical conductivity and measured Seebeck coefficients show an optimal polymer layer between 275 310 nm yield a maximum power factor $$(1.77\,\pm \,0.22) \frac{\mu \text {W}}{\text {m}\cdot {K}^2}$$ ( 1.77 ± 0.22 ) μ W m · K 2 . optimum results from dopant molecules per monomer 1.1 1.3 at these ratios P3HT HAuCl $$_4$$ 4 fabrication.

Language: Английский

Nanobinders advance screen-printed flexible thermoelectrics DOI
Wenyi Chen, Xiao‐Lei Shi, Meng Li

et al.

Science, Journal Year: 2024, Volume and Issue: 386(6727), P. 1265 - 1271

Published: Dec. 12, 2024

Limited flexibility, complex manufacturing processes, high costs, and insufficient performance are major factors restricting the scalability commercialization of flexible inorganic thermoelectrics for wearable electronics other high-end cooling applications. We developed an innovative, cost-effective technology that integrates solvothermal, screen-printing, sintering techniques to produce thermoelectric film. Our printable film, comprising Bi

Language: Английский

Citations

34

Aramid nanofibers at ultralow loadings: driving significant multifunctionality in epoxy composite dielectrics DOI Creative Commons

Haowen Yuan,

Zi Wang, Di Lan

et al.

Advanced Composites and Hybrid Materials, Journal Year: 2025, Volume and Issue: 8(1)

Published: Feb. 1, 2025

Language: Английский

Citations

14

Construction strategies and recent advances of flexible EMI phase change composites DOI Open Access

Ruihan Yan,

Qianhui Lin,

K.-I. You

et al.

Soft Science, Journal Year: 2025, Volume and Issue: 5(1)

Published: Jan. 22, 2025

With the continuous development of small and medium-sized electronic devices, which bring convenience to people’s lives, electromagnetic wave (EMW) pollution has emerged as a significant issue. The materials with interference (EMI) shielding capabilities for protection against harmful radiation plays vital role. Currently, wide range multifunctional, lightweight EMI have been created address various environmental requirements. However, single material difficult meet requirements high-speed transmission equipment because when such devices operate at high speeds, they typically generate elevated temperatures, excessive further exacerbates heat accumulation, reducing both efficiency lifespan. Therefore, thermal management is essential lower operating temperatures ensure optimal performance. Phase change (PCMs) are known storing large amount energy, potential in management, so flexible phase composites (PCCs) emerged. This review provides detailed examination based on fillers, PCMs latest advancements developing new PCCs. Finally, we suggest some research directions PCCs, hoping contribute rapid advancement next-generation electronics, human artificial intelligence.

Language: Английский

Citations

10

High intrinsic thermal conductivity and low dielectric constant of liquid crystalline epoxy resins with fluorine-containing semi-IPN structures DOI
Kuan Zhang, Junliang Zhang, Lin Dang

et al.

Science China Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 7, 2025

Language: Английский

Citations

7

Weavable thermoelectrics: advances, controversies, and future developments DOI Creative Commons
Xiao‐Lei Shi,

Shuai Sun,

Ting Wu

et al.

Materials Futures, Journal Year: 2023, Volume and Issue: 3(1), P. 012103 - 012103

Published: Nov. 14, 2023

Abstract Owing to the capability of conversion between thermal energy and electrical their advantages light weight, compactness, noise-free operation, precision reliability, wearable thermoelectrics show great potential for diverse applications. Among them, weavable thermoelectrics, a subclass with inherent flexibility, wearability, operability, find utility in harnessing waste heat from irregular sources. Given rapid advancements this field, timely review is essential consolidate progress challenge. Here, we provide an overview state thermoelectric materials devices smart textiles, encompassing mechanisms, materials, fabrications, device structures, applications recent advancements, challenges, prospects. This can serve as valuable reference researchers field flexible

Language: Английский

Citations

33

Optimization of thermoelectric parameters in Ag/MnO₂ nanocomposite-based flexible thermoelectric generators DOI

Manasa R. Shankar,

A. N. Prabhu, Ramakrishna Nayak

et al.

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Citations

1

Precision Control of Aerosol Jet Printing for Conformal Electronics Fabrication with Ultra‐Fine and Wide‐Range Resolution DOI Open Access
Geng Li, Shang Wang, Zhongwei Zhang

et al.

Advanced Materials Technologies, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 6, 2025

Abstract Aerosol jet printing (AJP) is a cutting‐edge additive manufacturing technique, ideal for fabricating conformal electronics due to its extended working distance, simplicity, and environmental sustainability. However, achieving optimal resolution hindered by complex interactions between aerosol droplets substrates, as well the influence of various process parameters. This study focuses on precise AJP control enable high‐resolution fabrication. Through randomized single‐factor experiments, effects gas flow rates, focusing ratio, print speed, highlighting role back pressure limits are examined. A computational fluid dynamics model, incorporating accurate particle size data, predicts stream width expedite operating window identification. The interaction mechanisms substrates elucidated, 5 µm. precision protocol developed, ensuring high‐quality features with resolutions ranging from 10 300 µm across diverse 3D without overspray. successful integration heater, temperature sensor, display demonstrates AJP's potential multi‐functional electronics.

Language: Английский

Citations

1

Modeling and analysis of jetting behavior of surface charge-induced electrohydrodynamic printing DOI
Yu Jiang,

Longkang Yang,

Dong Ye

et al.

Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(10)

Published: Oct. 1, 2024

Electrohydrodynamic (EHD) printing enables large-area, ultra-high-resolution manufacturing across a broad range of ink viscosities, but inevitably encounters difficulties when on electrically insulating three-dimensional substrates due to unpredictable electric field and surface residual charges. To overcome these obstacles, novel approach called plasma-induced electrohydrodynamic (PiE) has been proposed. PiE employs plasma directly create controllable local charge region substrate surfaces, which triggers EHD ejection mitigates the effect However, underlying mechanisms jetting behavior with respect parameters, such as charge-induced field, remain unexplored. Here, we conduct numerical investigation, based Taylor–Melcher leaky dielectric model level set method, printing. We first introduce dynamics throughout entire process. Then, carry out comprehensive investigation under four crucial parameters: amount preset charge, radius duration liquid electrical conductivity. By analyzing induced density, fluid velocity, jet diameters, deposited droplet sizes obtained from results, elucidate influence parameters dynamic behavior, durations process, quality. These findings offer valuable insights into jetting, advancing understanding optimization methods for this useful micro-/nano-manufacturing technology.

Language: Английский

Citations

4

Cu- or Ag-containing Bi-Sb-Te for in-line roll-to-roll patterned thin-film thermoelectrics DOI Creative Commons
Xudong Tao,

Qianfang Zheng,

Chongyang Zeng

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 3, 2025

Abstract The Selective Metallization Technique shows promise for roll-to-roll in-line patterning of flexible electronics using evaporated metals, but challenges arise when applied to sputtering functional materials. This study overcomes these with simultaneous Bi-Sb-Te and evaporation metal (Ag or Cu) thermoelectric layers Technique. Large-scale manufacturing is demonstrated through processing a 0.8 m wide polymer web at 25 m/min, achieving high-throughput production thin-film patterns nanometer thickness. room-temperature-deposited material system exhibits significantly enhanced performance facilitates an n-type-to-p-type transition in the Cu- Ag-containing Bi-Sb-Te-based composite film. Here, we show that while applying Technique, modifies impact residual oil on Bi-Sb-Te, which can be effectively removed few seconds plasma exposure, fabricated devices are validated wearable applications utilizing coiled-up wristband design.

Language: Английский

Citations

0

Investigation on the Anisotropic Electrothermal Performance of Wood‐Based Graphene Electric Heating Composites DOI Open Access

Wen Qu,

Xiaoyu Feng, Bo Guan

et al.

Advanced Engineering Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 5, 2025

The unique material structure and pronounced anisotropy of wood bestow it with an array remarkable properties, creating opportunities for designing functional materials. This study investigates the application wood's anisotropic in temperature‐controlled intelligent electric heating materials by preparing wood‐based graphene composites (GNPs@EW). Graphene nanosheets (GNPs) are incorporated into a birch matrix (EW) to enhance electrical thermal conductivity insulating wood. integration is confirmed through Fourier transform infrared spectrometer (FTIR) X‐ray diffractometer (XRD) analysis. optimal composite (GNPs@EW 1 ) prepared graphene‐to‐anhydrous ethanol mass ratio 1:1. results demonstrate influence on composites, revealing superior performance axial direction compared tangential direction. resistivity GNPs@EW along decreases 2.1–2.9 times relative direction, temperature rise after energization at 6 V 22–29 °C higher Furthermore, exhibits stability, enhanced mechanical uniformity, establishing these properties as foundation development innovative smart applications.

Language: Английский

Citations

0