Revealing Pt-seed-induced structural effects to tribological/electrical/thermoelectric modulations in two-dimensional PtSe2 using scanning probe microscopy

Youn, Seonhye; Go, Tae Won; Kim, Jeongmin; Yoo, Changhyeon; Shawkat, Mashiyat Sumaiya; Han, Sang Sub; Jeon, Seong-Jae; Jung, Yeonwoong; Park, Jeong Young; Lee, Wooyoung

doi:10.1016/j.nanoen.2021.106693

Cited by 11 publications

(11 citation statements)

References 53 publications

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“…This suggests that not only the topographical effect but also structural effects can affect the friction of 2D materials at the nanoscale. The frictional properties of the PtSe 2 films were only recently investigated for the first time [27]. However, a comprehensive investigation focusing on the impact of structural properties on the tribological behaviour of PtSe 2 layers has not been carried out.…”

Section: Introductionmentioning

confidence: 99%

Effect of the crystallographic c-axis orientation on the tribological properties of the few-layer PtSe2

Kozak

Sojková

Gucmann

et al. 2022

Applied Surface Science

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Section: Introductionmentioning

confidence: 99%

Effect of the crystallographic c-axis orientation on the tribological properties of the few-layer PtSe2

Kozak

Sojková

Gucmann

et al. 2022

Applied Surface Science

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“…In the setup, the conductive probe connects to an ultra-low noise current preamplifier, like a typical current SPM. [14] Figure S5a (Supporting Information) shows a representative current signal on PDMS, simultaneously measured with the tip's vertical motion. In Figure S5b (Supporting Information), average current (I AVG ) was calculated by averaging the current signals acquired during a single tapping cycle.…”

Section: Resultsmentioning

confidence: 99%

“…For each tip, the elastic constant was precisely calibrated using the thermal tune method. [14] For KPFM study, after completing each topography line in the non-contact SPM mode using an electrically conducting tip, the feedback loop controlling the vertical piezo was turned off. Subsequently, the tip was lifted from the surface and traced over the pre-acquired topography at a constant distance (30 nm in this study).…”

Section: Methodsmentioning

confidence: 99%

Direct Observation of Contact Electrification Effects at Nanoscale Using Scanning Probe Microscopy

Kim,

Jeong,

Kong

et al. 2023

Adv Materials Inter

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In the last decade, contact electrification has gained attention for its potential in energy harvesting, addressing fundamental physics. Scanning probe microscopy (SPM) has evolved as a powerful platform, enabling the in situ characterization/manipulation of a sample's tribological/electrical properties at nanoscale. However, although both the sliding and tapping modes are available in the energy harvesting, the lateral sliding using contact mode SPM has predominantly been employed in triboelectric study. In this work, contact electrification on polydimethylsiloxane is investigated, using peak force tapping atomic force microscopy (PF‐AFM). As PF‐AFM quasi‐discretely offers vertical tapping motions of the probe with a regulated force amplitude, resembling a vertical‐type triboelectric nanogenerator, while minimizing lateral forces. The subsequent surface potential measurements reveal that the generated tribocharge is influenced by both the effective work function difference and energy dissipation at the interface. Furthermore, the accumulation of transferred charges is explored by measuring tip‐sample current during the PF‐AFM operation, showing the comparable results with the surface potential measurement. The results can be attributed to the contact potential difference assisted by the energy dissipation at the interface. This study offers an advanced opportunity to understand and study charge generation behavior based on surface properties without damaging the sample.

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“…30 Although the above advances have been made in PtSe 2 -based gas sensors, there is still more room to improve in terms of response sensitivity, limit of detection, recovery time, and hybrid platform integration. In addition, the transition from horizontal to vertical lattice orientation occurs in TAC process suggests various gas adsorption characteristics at different thickness morphologies, 31,32 which also has not been well investigated.…”

Section: Introductionmentioning

confidence: 99%

2D PtSe₂ Enabled Wireless Wearable Gas Monitoring Circuits with Distinctive Strain-Enhanced Performance

Wang

Duan

et al. 2023

ACS Nano

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The application of 2D materials-based flexible electronics in wearable scenarios is limited due to performance degradation under strain fields. In contrast to its negative role in existing transistors or sensors, herein, we discover a positive effect of strain to the ammonia detection in 2D PtSe 2 . Linear modulation of sensitivity is achieved in flexible 2D PtSe 2 sensors via a customized probe station with an in situ strain loading apparatus. For trace ammonia absorption, a 300% enhancement in room-temperature sensitivity (31.67% ppm −1 ) and an ultralow limit of detection (50 ppb) are observed under 1/4 mm −1 curvature strain. We identify three types of strainsensitive adsorption sites in layered PtSe 2 and pinpoint that basal-plane lattice distortion contributes to better sensing performance resulting from reduced absorption energy and larger charge transfer density. Furthermore, we demonstrate state-of-the-art 2D PtSe 2 -based wireless wearable integrated circuits, which allow real-time gas sensing data acquisition, processing, and transmission through a Bluetooth module to user terminals. The circuits exhibit a wide detection range with a maximum sensitivity value of 0.026 V•ppm −1 and a low energy consumption below 2 mW.

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Revealing Pt-seed-induced structural effects to tribological/electrical/thermoelectric modulations in two-dimensional PtSe2 using scanning probe microscopy

Cited by 11 publications

References 53 publications

Effect of the crystallographic c-axis orientation on the tribological properties of the few-layer PtSe2

Effect of the crystallographic c-axis orientation on the tribological properties of the few-layer PtSe2

Direct Observation of Contact Electrification Effects at Nanoscale Using Scanning Probe Microscopy

2D PtSe₂ Enabled Wireless Wearable Gas Monitoring Circuits with Distinctive Strain-Enhanced Performance

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Revealing Pt-seed-induced structural effects to tribological/electrical/thermoelectric modulations in two-dimensional PtSe2 using scanning probe microscopy

Cited by 11 publications

References 53 publications

Effect of the crystallographic c-axis orientation on the tribological properties of the few-layer PtSe2

Effect of the crystallographic c-axis orientation on the tribological properties of the few-layer PtSe2

Direct Observation of Contact Electrification Effects at Nanoscale Using Scanning Probe Microscopy

2D PtSe2 Enabled Wireless Wearable Gas Monitoring Circuits with Distinctive Strain-Enhanced Performance

Contact Info

Product

Resources

About

2D PtSe₂ Enabled Wireless Wearable Gas Monitoring Circuits with Distinctive Strain-Enhanced Performance