Bonding strength enhancement of low temperature sintered SiC power module by femtosecond laser induced micro/nanostructures

Cao, Peilin; Lin, Nai; Li, Shaohui; Zhang, Xiaofeng; Duan, Jian

doi:10.1016/j.mssp.2022.106802

Cited by 10 publications

(1 citation statement)

References 33 publications

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“…Femtosecond laser processing technology has proven to be an effective solution for fabricating ASS. It enables the manufacturing of arbitrary structures with high-precision controllability, maskless and one-step molding. − Meanwhile, its negligible thermal effects and designability of micro/nanostructure dimensions are very beneficial for the design and post-production of ASS array surfaces. , The superiority of this method has been proven in pioneer works concerning the processing of gallium arsenide, sapphire, etc. ,, For example, Bushunov et al used the femtosecond laser Gaussian beam to fabricate microhole arrays on gallium arsenide surfaces, achieving an average transmittance of 94% (7–11 μm) . The ASSs fabricated by this method have poor morphology and poor structural consistency due to the manufacturing accuracy limitation of Gaussian beams.…”

Section: Introductionmentioning

confidence: 99%

Bioinspired Near-Full Transmittance MgF₂ Window for Infrared Detection in Extremely Complex Environments

Ding

Liu

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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Due to the extreme complexity of the anti-reflective subwavelength structure (ASS) parameters and the drastic limitation of Gaussian beam manufacturing accuracy, it remains a great challenge to manufacture ASS with ultrahigh transmittance on the surface of infrared window materials (such as magnesium fluoride (MgF2)) directly by femtosecond laser. Here, a design, manufacturing, and characterization method that can produce an ultrahigh-performance infrared window by femtosecond laser Bessel beam is proposed. Inspired by the excellent anti-reflective and hydrophobic properties of the special structure of dragonfly wings, a similar structural pattern with grid-distributed truncated cones is designed and optimized for its corresponding parameters to achieve near-full transmittance. The desired submicron structures are successfully fabricated by a Bessel beam after effectively shaping the beam. As a practical application, the bioinspired ASS is manufactured on the surface of MgF2, achieving an ultrahigh transmittance of 99.896% in the broadband of 3–5 μm, ultrawide angle of incidence (over 70% at 75° incidence), and good hydrophobicity with a water contact angle of 99.805°. Results from infrared thermal imaging experiments show that the ultrahigh-transmittance MgF2 window has superior image acquisition and anti-interference performance (3.9–8.6% image contrast enhancement and more accurate image edge recognition) in an environment with multiple interfering factors, which may play a significant role in facilitating applications of infrared thermal imaging technologies in extremely complex environments.

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Section: Introductionmentioning

confidence: 99%

Bioinspired Near-Full Transmittance MgF₂ Window for Infrared Detection in Extremely Complex Environments

Ding

Liu

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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Optimization and simulation of nano-silver paste sintered copper interconnection process

Cao¹,

Jia²,

Hui³

et al. 2022

J Mater Sci: Mater Electron

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Temperature and thickness-dependent silver hillock generation mechanism and surface morphology nature of direct plated silver layers onto copper substrates

Kim,

Zhang

et al. 2024

Journal of Alloys and Compounds

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Bonding strength enhancement of low temperature sintered SiC power module by femtosecond laser induced micro/nanostructures

Cited by 10 publications

References 33 publications

Bioinspired Near-Full Transmittance MgF₂ Window for Infrared Detection in Extremely Complex Environments

Bioinspired Near-Full Transmittance MgF₂ Window for Infrared Detection in Extremely Complex Environments

Optimization and simulation of nano-silver paste sintered copper interconnection process

Temperature and thickness-dependent silver hillock generation mechanism and surface morphology nature of direct plated silver layers onto copper substrates

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Bonding strength enhancement of low temperature sintered SiC power module by femtosecond laser induced micro/nanostructures

Cited by 10 publications

References 33 publications

Bioinspired Near-Full Transmittance MgF2 Window for Infrared Detection in Extremely Complex Environments

Bioinspired Near-Full Transmittance MgF2 Window for Infrared Detection in Extremely Complex Environments

Optimization and simulation of nano-silver paste sintered copper interconnection process

Temperature and thickness-dependent silver hillock generation mechanism and surface morphology nature of direct plated silver layers onto copper substrates

Contact Info

Product

Resources

About

Bioinspired Near-Full Transmittance MgF₂ Window for Infrared Detection in Extremely Complex Environments

Bioinspired Near-Full Transmittance MgF₂ Window for Infrared Detection in Extremely Complex Environments