Coherent Atomic-Scale Ripples on Metallic Glasses Patterned by Low-Energy Ion Irradiation for Large-Area Surface Structuring

Luo, P.; Jaramillo, Camilo; Wallum, Alison; Liu, Zetai; Zhao, R.; Shen, Li-Yong; Zhang, Yang; Spear, Jessica; Curreli, Davide; Lyding, Joseph W.; Gruebele, Martin; Allain, Jean Paul

doi:10.1021/acsanm.0c02548

Cited by 6 publications

(3 citation statements)

References 71 publications

(125 reference statements)

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“…Novel vibration isolation methods, such as the use of magnetorheological elastomers as active dampers [36], require careful design and meticulous care for long-term stability. Inspired by vibration isolation methods used for scanning tunneling microscopes [37, 38], we sought to utilize the classical approach of using elastic bands as passive vibration dampers to meet our requirements. With the imaging system suspended by elastic bands, the noise caused by mechanical vibrations is insignificant and covered by photon shot noise and signals from out-of-plane nanoparticles (Fig.…”

Section: Resultsmentioning

confidence: 99%

A Photonic Resonator Interferometric Scattering Microscope for Label-free Detection of Nanometer-Scale Objects with Digital Precision in Point-of-Use Environments

Liu¹,

Tibbs²,

Li³

et al. 2022

Preprint

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Label-free detection and digital counting of nanometer-scaled objects such as nanoparticles, viruses, extracellular vesicles, and protein molecules enable a wide range of applications in cancer diagnostics, pathogen detection, and life science research. The contrast of interferometric scattering microscopy is amplified through a photonic crystal surface, upon which scattered light from an object combines with illumination from a monochromatic plane wave source. The use of a photonic crystal substrate for interference scattering microscopy results in reduced requirements for high-intensity lasers or oil-immersion objectives, thus opening a pathway toward instruments that are more suitable for environments outside the optics laboratory. Here, we report the design, implementation, and characterization of a compact Photonic Resonator Interferometric Scattering Microscope (PRISM) designed for point-of-use environments and applications. The instrument incorporates two innovative elements that facilitate operation on a desktop in ordinary laboratory environments by users that do not have optics expertise. First, because scattering microscopes are extremely sensitive to vibration, we incorporated an inexpensive but effective solution of suspending the main components of the instrument from a rigid metal framework using elastic bands, resulting in an average of 28.7 dBV reduction in vibration amplitude compared to an office desk. Second, an automated focusing module based on the principle of total internal reflection maintains the stability of image contrast over time and spatial position, facilitating automated data collection. In this work, we characterize the performance of the instrument by measuring the contrast from gold nanoparticles with diameters in the 10-40 nm range and by observing various biological analytes, including HIV virus, SARS-CoV-2 virus, exosomes, and ferritin protein.

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Section: Resultsmentioning

confidence: 99%

A Photonic Resonator Interferometric Scattering Microscope for Label-free Detection of Nanometer-Scale Objects with Digital Precision in Point-of-Use Environments

Liu¹,

Tibbs²,

Li³

et al. 2022

Preprint

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“…Charged particle irradiation (e.g., ions such as α particles or Ar + ) also leads to fluidization and reconstruction of glass surfaces. As one example, ion-bombardment of glass surfaces leads to structures resembling sand dunes (Figure D,E), which maintain the local amorphous properties of the surface, but appears to create long-range periodic patterns on a scale of many glass forming units …”

Section: Experimental Probes Deep Into the Energy Landscapementioning

confidence: 99%

“…As one example, ion-bombardment of glass surfaces leads to structures resembling sand dunes (Figure 5D,E), which maintain the local amorphous properties of the surface, but appears to create long-range periodic patterns on a scale of many glass forming units. 85…”

Section: Experimental Probes Deep Into the Energymentioning

confidence: 99%

Glass Dynamics Deep in the Energy Landscape

et al. 2021

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When a liquid is cooled, progress down the energy landscape is arrested near the glass transition temperature T g . In principle, lower energy states can be accessed by waiting for further equilibration, but the rough energy landscape of glasses quickly leads to kinetics on geologically slow time scales below T g . Over the past decade, progress has been made probing deeper into the energy landscape via several techniques. By looking at bulk and surface diffusion, using layered deposition that promotes equilibration, imaging glass surfaces with faster dynamics below T g , and optically exciting glasses, experiments have moved into a regime of ultrastable, low energy glasses that was difficult to access in the past. At the same time, both simulations and energy landscape theory based on a random first order transition (RFOT) have tackled systems that include surfaces, optical excitation, and interfacial dynamics. Here we review some of the recent experimental work, and how energy landscape theory illuminates glassy dynamics well below the glass transition temperature by making direct connections between configurational entropy, energy landscape barriers, and the resulting dynamics.

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Anisotropic wettability transition on nanoterraced glass surface by Ar ions

Hans,

Parida,

Augustine

et al. 2024

J Mater Sci

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Ion beam sputtering (IBS) can induce nanoripple patterns in a short time on variety of materials for wide range of applications. In this work, we describe the nanoripple as well as terrace pattern formation by IBS on soda-lime glass surfaces and the mechanisms leading to such pattern formations. The role of ion energy, ion fluence, and ion incidence angle on the morphology of the structural features is systematically explored. For a range of ion beam parameter values with energy varying from 600 to 1500 eV and fluence in the range 9.7 × 1017 to 2.0 × 1019 ions/cm2 at fixed incidence angle of 45°, transition of ripples to terraces has been observed. The experimental results are explained on the basis of recently modified KS equation which clearly explains the simultaneous role of nonlinear cubic term in the terrace formation. It is also demonstrated how ion beam can be used to tailor the wettability of glass surface and makes it hydrophobic in nature. Due to pattern formation, anisotropic hydrophobicity is observed showing an increasing trend owing to the magnification of the amplitude of nanopatterns developed on the surface.

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Coherent Atomic-Scale Ripples on Metallic Glasses Patterned by Low-Energy Ion Irradiation for Large-Area Surface Structuring

Cited by 6 publications

References 71 publications

A Photonic Resonator Interferometric Scattering Microscope for Label-free Detection of Nanometer-Scale Objects with Digital Precision in Point-of-Use Environments

A Photonic Resonator Interferometric Scattering Microscope for Label-free Detection of Nanometer-Scale Objects with Digital Precision in Point-of-Use Environments

Glass Dynamics Deep in the Energy Landscape

Anisotropic wettability transition on nanoterraced glass surface by Ar ions

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