Adhesion Reduction of Diamond-Like Carbon Films Based on Different Contact Geometries by Using an AFM

Lai, Tianmao; Huang, Ping; Cai, Yazhi

doi:10.1080/00218464.2014.987867

Cited by 9 publications

(3 citation statements)

References 18 publications

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“…Diamond-like (glassy) carbon surfaces are known to reduce the work of adhesion. 25 The objectives of our study were severalfold. Reproducible spray dryer process and cCNC suspension feed conditions needed to be identied to yield large quantities of spherical microbeads for comparison with other classes of spherical microbeads comprising different or similar chemical assembly components.…”

Section: Introductionmentioning

confidence: 99%

Mechanical, morphological and comparative properties of microbeads assembled from carboxylated cellulose nanocrystals

Wu,

Andrews

2024

J. Mater. Chem. A

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Section: Introductionmentioning

confidence: 99%

Mechanical, morphological and comparative properties of microbeads assembled from carboxylated cellulose nanocrystals

Wu,

Andrews

2024

J. Mater. Chem. A

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“…As is known, to prevent corrosion and damage from intermittent slider-disk contact, the disk surface is often deposited with a diamond-like carbon (DLC) layer and a strongly adhered molecularly thin lubricant layer, and the slider surface is also covered with a DLC layer [19]. The addition of a lubricant layer and a DLC layer can influence the adhesion energy and thus change the adhesion force [20,21]. Therefore, predictions of the adhesive interaction at the HDI need a more accurate theory, which can consider the layered structures of the head and the disk.…”

Section: Introductionmentioning

confidence: 99%

Investigations of Adhesion under Different Slider-Lube/Disk Contact States at the Head–Disk Interface

et al. 2020

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Adhesion is the key factor influencing the failure of the hard disk drive operating under ultra-low flying height. In order to mitigate the negative effects of adhesion at the head–disk interface (HDI) and promote further development of the thermal flying height control (TFC) technology, an adhesive contact model based on the Lifshitz theory accounting for the thermal protrusion (TP) geometry of TFC slider, the layered structures of the head and disk, and the operation states of the slider was proposed to investigate the static contact characteristics at the HDI. The simulation results demonstrated the undesirable unstable regions during the transitions between different operation states and the necessity of applying TFC technology. The reduction in the head–media spacing (HMS) was found to be achieved by properly increasing the TP height, decreasing the thickness of the lubricant layer or the thickness of the diamond–like carbon (DLC) layer during the flying state or the TP–lube contact state. At the TP–DLC contact regime, the attractive interaction was stronger than other states, and the strong repulsive interaction made the HMS difficult to be further reduced through the increase in the TP height or the decrease in the lubricant thickness.

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“…The results can be concluded that the surface roughness also takes effect on reducing the adhesion force. Also, the DLC film plays a role in reducing the wear, tear and decreasing surface energy[52]. Besides, adhesion reduction can be done by surface charged neutralization.…”

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confidence: 99%

Study of interactions between magnesium silicate particle and diamond-like carbon using atomic force microscopy

Dokmai¹

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Interaction between particles and different surfaces under ambient condition is studied using AFM-based force spectroscopy. This work focuses on the adhesion mechanism and factors affecting particle-surface adhesion. The particles of interest consist of magnesium silicate (talcum powder) and zinc oxide (ZnO) particles, which have very attractive properties and are widely used in several applications. The adhesion force measurements were first carried out using silicon/silicon coated with DLC probes pressed on talc particles modified with hydrochloric acid or different organosilanes. These modifications change hydrophobicity and hydrophilicity of the particles. The results show that the adhesion forces are distributed in a bimodal fashion. It is postulated that they originate from two types of surface of talc particles, i.e., face surface (hydrophobic character) and edge surface (hydrophilic character). The adsorption and adhesion strength are in the following trend: hydrophilic-hydrophilic > hydrophilic-hydrophobic > hydrophobic-hydrophobic. Similar bimodal distribution was also observed for ZnO particles, of which could be distinguished by controlling the shape of particles. The polar surface is obtained from the top and bottom of micron-sized ZnO powder while the nonpolar surface is obtained from the side plane of ZnO nanorods. Moreover, interaction with AFM probes that were chemically modified with different terminal functional groups was also investigated, in order to describe relationship between the adhesion interactions and adsorption mechanism. The results show the same trend as in talc particles, i.e., polar-polar interaction is stronger than polar-nonpolar interaction, and the weakest adhesion was observed from nonpolar-nonpolar interaction. However, electronic distribution and the atomic arrangement on the surface also affect the adhesion. In general, this work demonstrates that the intermolecular forces are important for the particles-surface interactions, especially van der Waals forces and hydrophobic effect.

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Adhesion Reduction of Diamond-Like Carbon Films Based on Different Contact Geometries by Using an AFM

Cited by 9 publications

References 18 publications

Mechanical, morphological and comparative properties of microbeads assembled from carboxylated cellulose nanocrystals

Mechanical, morphological and comparative properties of microbeads assembled from carboxylated cellulose nanocrystals

Investigations of Adhesion under Different Slider-Lube/Disk Contact States at the Head–Disk Interface

Study of interactions between magnesium silicate particle and diamond-like carbon using atomic force microscopy

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