Compatibility investigation of liquid tin and tungsten-based capillary porous system under high-density plasma environment

Ye, Zongbiao; Ma, Xiaochun; He, Pengjie; Wang, Zhijun; Yang, Cheng‐Ta; Chen, Bo; Chen, Jianjun; Wei, Jingxuan; Zhang, Kun; Gou, Fujun

doi:10.1007/s42864-020-00044-8

Cited by 10 publications

(4 citation statements)

References 28 publications

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“…The sample was cut into pieces (10 × 10 × 2 mm) by wire cutting and then treated with mechanical polishing. Next, the Mo electrode was put on the bias electrode inside a linear plasma device, [50] where the main fabrication parameters were executed as follows: 0.25 T of magnetic induction, 5 × 10 22 m −2 s −1 of electron flux, 50-70 V of bias voltage, and 1 h of irradiation time. The surface temperature was 800 K during plasma treatment.…”

Section: Methodsmentioning

confidence: 99%

MXene‐Sponge Based High‐Performance Piezoresistive Sensor for Wearable Biomonitoring and Real‐Time Tactile Sensing

et al. 2021

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Electrode microfabrication technologies such as lithography and deposition have been widely applied in wearable electronics to boost interfacial coupling efficiency and device performance. However, a majority of these approaches are restricted by expensive and complicated processing techniques, as well as waste discharge. Here, helium plasma irradiation is employed to yield a molybdenum microstructured electrode, which is constructed into a flexible piezoresistive pressure sensor based on a Ti3C2Tx nanosheet‐immersed polyurethane sponge. This electrode engineering strategy enables the smooth transition between sponge deformation and MXene interlamellar displacement, giving rise to high sensitivity (1.52 kPa−1) and good linearity (r2 = 0.9985) in a wide sensing range (0–100 kPa) with a response time of 226 ms for pressure detection. In addition, both the experimental characterization and finite element simulation confirm that the hierarchical structures modulated by pore size, plasma bias, and MXene concentration play a crucial role in improving the sensing performance. Furthermore, the as‐developed flexible pressure sensor is demonstrated to measure human radial pulse, detect finger tapping, foot stomping, and perform object identification, revealing great feasibility in wearable biomonitoring and health assessment.

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Section: Methodsmentioning

confidence: 99%

MXene‐Sponge Based High‐Performance Piezoresistive Sensor for Wearable Biomonitoring and Real‐Time Tactile Sensing

et al. 2021

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“…S1. [26] The prepared samples were clamped on a molybdenum holder located on the plasma beam downstream at 40 cm. The thermocouple was placed beneath the irradiated molybdenum surface to timely monitor the temperature during the He plasma irradiating the sample, the temperature range for fuzz formation induced by different helium ion energies was 850 K-930 K, which was within the necessary temperature range of Mo surface fuzz nanostructure growth (800 K-1050 K).…”

Section: Methodsmentioning

confidence: 99%

Morphological and structural damage investigation of nanostructured molybdenum fuzzy surface after pulsed plasma bombardment

Luo¹,

Yan²,

Guo³

et al. 2022

Chinese Phys. B

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Steady high-flux helium (He) plasma with energy ranging from 50 eV to 90 eV is used to fabricate a fiber-form nanostructure called fuzz on a polycrystalline molybdenum (Mo) surface. Enhanced hydrogen (H) pulsed plasma in a wide power density range of 12 MW/m2–35 MW/m2 is subsequently used to bombard the fuzzy Mo, thereby simulating the damage of edge localized mode (ELM) to fuzz. The comparisons of surface morphologies, crystalline structures, and optical reflectivity between the original Mo and the Mo treated with various He+ energy and transient power densities are performed. With the increase of He ion energy, the Mo nano-fuzz evolved density is enlarged due to the decrease of filament diameter and optical reflectivity. The fuzz-enhanced He release should be the consequence of crystalline growth and the lattice shrinkage inside the Mo-irradiated layers (∼ 200 nm). The fuzz induced by lower energy experiences more severe melting damage and dust release under the condition of the identical transient H plasma-bombardment. The H and He are less likely to be trapped due to aggravated melting evidenced by the enhanced crystalline size and distinct lattice shrinkage. As the transient power density rises, the thermal effect is enhanced, thereby causing the fuzz melting loss to aggravate and finally to completely disappear when the power density exceeds 21 MW/m2. Irreversible grain expansion results in huge tensile stress, leading to the observable brittle cracking. The effects of transient thermal load and He ion energy play a crucial role in etching Mo fuzz during ELM transient events.

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“…The fabricated Li-CPS was placed vertically, facing against the incident plasma in SCU-PSI. Figure 2 shows the schematic illustration of SCU-PSI as we reported before [17]. The Ar plasma irradiation parameters were adjusted as follows: average T e ∼0.5 eV, n e ∼2×10 19 m −3 , power flux of 8.23 kW m −2 with a diameter of ∼26 mm (measured by the Langmuir probe) under a magnetic field B of 0.2 T. During plasma exposure, the substrate temperature of Li-CPS was tested using thermocouples (thermocouples was set attached below CPS).…”

Section: Methodsmentioning

confidence: 99%

Interaction of an unwetted liquid Li-based capillary porous system with high-density plasma

Gao¹,

Ye²,

Liu³

et al. 2022

Plasma Sci. Technol.

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This study examined the effects of plasma irradiation on an unwetted liquid lithium-based capillary porous system (Li-CPS). The Li-CPS was irradiated with high-density Ar plasma using a linear plasma device at Sichuan University for Plasma Surface Interaction (SCU-PSI). The high-speed camera, Langmuir probe, and multi-channel spectrometer were used to characterize the effects of plasma irradiation. Upon Ar plasma irradiation, liquid Li drops were formed on the surface of the unwetted Li-CPS. Immediately after this irradiation, the drops fractured and were ejected into the plasma within ~20 ms scale, which is not observed before to the best of our knowledge. Related results showed that the ejection behavior of Li could effectively cool electron temperature and reduce incident heat flux by ~30% and correspondingly matrix temperature ~150 °C, revealing an enhanced vapor shielding effect. The involved internal mechanism and physical processes deserve further investigations.

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Compatibility investigation of liquid tin and tungsten-based capillary porous system under high-density plasma environment

Cited by 10 publications

References 28 publications

MXene‐Sponge Based High‐Performance Piezoresistive Sensor for Wearable Biomonitoring and Real‐Time Tactile Sensing

MXene‐Sponge Based High‐Performance Piezoresistive Sensor for Wearable Biomonitoring and Real‐Time Tactile Sensing

Morphological and structural damage investigation of nanostructured molybdenum fuzzy surface after pulsed plasma bombardment

Interaction of an unwetted liquid Li-based capillary porous system with high-density plasma

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