Picosecond acoustics versus tape adhesion test: Confrontation on a series of similar samples with a variable adhesion

Vital-Juarez, A.; Roffi, L.; Desmarres, M.; Devos, Arnaud

doi:10.1016/j.surfcoat.2022.128926

Cited by 7 publications

(1 citation statement)

References 22 publications

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“…Chitosan may be seen as the adhesive that adheres to the PEEK surface. According to the ASTM D3359-B standard, the least adhesion grade with all coatings is grade "3B" because the highest value of a peeled area did not exceed 15% [27,28]. According to the literature, rough and coated surfaces could both promote increased osseointegration.…”

Section: Resultsmentioning

confidence: 99%

Utilize Chitosan to Coat Hydroxyapatite on Polymer

Mohammed,

Arbilei,

Hamandi

et al. 2023

JBBBE

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Biocompatible bone implants are often proposed to improve osseointegration such as metal or polymer. Calcium hydroxyapatite Ca10(PO4)6-OH2, HA is the primary inorganic component of human bone. Hydroxyapatite and polymer are biocompatible to the human body and help to increase bone growth. Increasing osseointegration by application of coating polymer on ceramic using the dip coating method is a challenge in itself for the success of the process of coating polymeric materials on ceramic materials using the previous method. This research aims to establish a new interface for promoting osseointegration. This interface between the polymeric part and the bone tissue to overcome the problems and failures that occur in the metal limbs implanted in the amputees. As a result of its rejection by the cells of the living body or the lack of good cohesion between the implant and the place of contact. In this work, coat PEEK plastic material coated with an active biocompatible material (Hydroxyapatite). The polymeric parts that implant inside the bone will be used as an anchor for the metallic screw that is used for bone succession or artificial limb. This research is one of a series of investigations that enhance bone osseointegration in the simplest and most efficient method. The dipping method is used to create adhesive between ceramic and polymer (polyether ether ketone) depending on the chitosan material. Tape tests showed that there was good adherence between the HA and PEEK surfaces.

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Section: Resultsmentioning

confidence: 99%

Utilize Chitosan to Coat Hydroxyapatite on Polymer

Mohammed,

Arbilei,

Hamandi

et al. 2023

JBBBE

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Sensitivity Improvements for Picosecond Ultrasonic Thickness Measurements in Gold and Tungsten Nanoscale Films

Dong,

Yao,

Zhu

et al. 2024

Nanomanuf Metrol

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Picosecond ultrasonics, as a nondestructive and noncontact method, can be employed for nanoscale metallic film thickness measurements. The sensitivity of the system, which determines the measurement precision and practicability of this technique, is often limited by the weak intensity of the ultrasonic signal. To solve this problem, we investigate the distinct mechanisms involved in picosecond ultrasonic thickness measurement for two types of metals, namely tungsten (W) and gold (Au). For thickness measurement in W films, theory and simulation show that optimizing the pump and probe laser wavelengths, which determine the intensity and shape of the ultrasonic signal, is critical to improving measurement sensitivity, while for Au film measurements, where acoustic-induced beam distortion is dominant, the signal intensity can be optimized by selecting an appropriate aperture size and sample position. The above approaches are validated in experiments. A dual-wavelength pump–probe system is constructed based on a passively mode-locked ytterbium-doped fiber laser. The smoothing method and multipeak Gaussian fitting are employed for the extraction of ultrasonic time-of-flight. Subnanometer measurement precision is achieved in a series of W and Au films with thicknesses of 43–750 nm. This work can be applied to various high-precision, noncontact measurements of metal film thickness in the semiconductor industry.

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Traceable nanoscale indentation measurement of film adhesion

Zhu,

Li,

et al. 2024

Measurement: Sensors

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Picosecond acoustics versus tape adhesion test: Confrontation on a series of similar samples with a variable adhesion

Cited by 7 publications

References 22 publications

Utilize Chitosan to Coat Hydroxyapatite on Polymer

Utilize Chitosan to Coat Hydroxyapatite on Polymer

Sensitivity Improvements for Picosecond Ultrasonic Thickness Measurements in Gold and Tungsten Nanoscale Films

Traceable nanoscale indentation measurement of film adhesion

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