Publications by authors named "Vi Vo"

This paper presents a comprehensive survey of network analysis research on the film industry, aiming to evaluate its emergence as a field of study and identify potential areas for further research. Many foundational network studies made use of the abundant data from the Internet Movie Database (IMDb) to test network methodologies. This survey focuses more specifically on examining research that employs network analysis to evaluate the film industry itself, revealing the social and business relationships involved in film production, distribution, and consumption.

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To achieve coordinated functions, fluidic soft robots typically rely on multiple input lines for the independent inflation and deflation of each actuator. Fluidic actuators are controlled by rigid electronic pneumatic valves, restricting the mobility and compliance of the soft robot. Recent developments in soft valve designs have shown the potential to achieve a more integrated robotic system, but are limited by high energy consumption and slow response time.

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Breaking structural symmetry in two-dimensional layered Janus materials can result in enhanced new phenomena and create additional degrees of piezoelectric responses. In this study, we theoretically design a series of Janus monolayers HfGeZH (Z = N, P, As) and investigate their structural characteristics, crystal stability, piezoelectric responses, electronic features, and carrier mobility using first-principles calculations. Phonon dispersion analysis confirms that HfGeZH monolayers are dynamically stable and their mechanical stability is also confirmed through the Born-Huang criteria.

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Article Synopsis
  • The article investigates new materials for piezoelectric and electronic devices by analyzing Janus ZrGeZH monolayers (where Z = N, P, As) using density functional theory calculations.
  • The study confirms the stability of these materials through various simulations, revealing that they are indirect band gap semiconductors with band gap energies of about 1.15 eV for ZrGePH and 1.00 eV for ZrGeAsH.
  • The research highlights the promising piezoelectric properties and high electron mobility of these monolayers, indicating their potential use in advanced technology applications.
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Background And Objective: Survival analysis plays an essential role in the medical field for optimal treatment decision-making. Recently, survival analysis based on the deep learning (DL) approach has been proposed and is demonstrating promising results. However, developing an ideal prediction model requires integrating large datasets across multiple institutions, which poses challenges concerning medical data privacy.

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The auxetic materials have exotic mechanical properties compared to conventional materials, such as higher indentation resistance, more superior sound absorption performance. Although the auxetic behavior has also been observed in two-dimensional (2D) nanomaterials, to date there has not been much research on auxetic materials in the vertical asymmetric Janus 2D layered structures. In this paper, we explore the mechanical, electronic, and transport characteristics of Janus SiOX (X = S, Se, Te) monolayers by first-principle calculations.

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From the extending requirements for using innovative materials in advanced technologies, it is necessary to explore new materials for relevant applications. In this work, we design new two-dimensional (2D) Janus ZrSiSZ (Z = N, P, As) monolayers and investigate their crystal lattice and dynamic stability by using density functional theory investigations. The two stable structures of ZrSiSP and ZrSiSAs are then systematically examined for thermal, energetic, and mechanical stability, and electronic and transport properties.

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Two-dimensional (2D) Janus materials with extraordinary properties are promising candidates for utilization in advanced technologies. In this study, new 2D Janus XWSiP (X = S, Se, Te) monolayers were constructed and their properties were systematically analyzed by using first-principles calculations. All three structures of SWSiP, SeWSiP, and TeWSiP exhibit high energetic stability for the experimental fabrication with negative and high values, the elastic constants obey the criteria of Born-Huang, and no imaginary frequency exists in the phonon dispersion spectra.

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Group III monochalcogenide compounds can exist in different polymorphs, including the conventional and phases. Since the bulk form of the -group III monochalcogenides has been successfully synthesized [ (2006) 235202], prospects for research on their corresponding monolayers have also been opened. In this study, we design and systematically consider a series of Janus structures formed from the two-dimensional phase of gallium monochalcogenide GaXY (X/Y = S, Se, Te) using first-principles simulations.

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Novel Janus materials have attracted broad interest due to the outstanding properties created by their out-of-plane asymmetry, with increasing theoretical exploration and more reports of successful fabrication in recent years. Here, we construct and explore the crystal structures, stabilities, electronic band structures, and transport properties - including carrier mobilities - of two-dimensional Janus MGeSiP (M = Ti, Zr, or Hf) monolayers based on density functional theory calculations. From the cohesive energies, elastic constants, and phonon dispersion calculations, the monolayers are confirmed to exhibit structural stability with high feasibility for experimental synthesis.

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In this paper, we introduce a new phase of two-dimensional aluminum monochalcogenide, namely -AlX (X = S, Se, and Te). With the space group, -AlX possesses a large unit cell containing 8 atoms. The phase of AlX monolayers is found to be dynamically and elastically stable based on the evaluation of its phonon dispersions and elastic constants.

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This work presents the preparation of bioactive glasses 70SiO-(26 - )CaO-4PO-AgO (with = 0, 1, 3, 10 mol%) by a modified sol-gel method with reduced synthesis time based on hydrothermal reaction in a medium without acid or base catalysts. The synthetic materials were characterized by several physical-chemical techniques such as TG-DSC, XRD, SEM, TEM, and N adsorption/desorption measurement. The analysis data confirmed that the glass sample not containing Ag has a completely amorphous structure, while glass samples containing Ag exhibited a pure phase of metallic nano-silver in the glass amorphous phase.

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We discuss and examine the stability, electronic properties, and transport characteristics of asymmetric monolayers XWGeN (X = O, S, Se, Te) using density functional theory. All four monolayers of quintuple-layer atomic Janus XWGeN are predicted to be stable and they are all indirect semiconductors in the ground state. When the spin-orbit coupling (SOC) is included, a large spin splitting at the point is found in XWGeN monolayers, particularly, a giant Rashba-type spin splitting is observed around the point in three structures SWGeN, SeWGeN, and TeWGeN.

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Segmentation of liver tumors from Computerized Tomography (CT) images remains a challenge due to the natural variation in tumor shape and structure as well as the noise in CT images. A key assumption is that the performance of liver tumor segmentation depends on the characteristics of multiple features extracted from multiple filters. In this paper, we design an enhanced approach based on a two-class (liver, tumor) convolutional neural network that discriminates tumor as well as liver from CT images.

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Inspired by the successfully experimental synthesis of Janus structures recently, we systematically study the electronic, optical, and electronic transport properties of Janus monolayers In(/= S, Se, Te with≠) in the presence of a biaxial strain and electric field using density functional theory. Monolayers Inare dynamically and thermally stable at room temperature. At equilibrium, both InSTe and InSeTe are direct semiconductors while InSSe exhibits an indirect semiconducting behavior.

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In this paper, we investigate the electronic, optical, and thermoelectric properties of GaSSe monolayer by using density functional theory. analysis of the phonon spectrum and molecular dynamics simulations, GaSSe is confirmed to be stable at room temperature. Our calculations demonstrate that GaSSe exhibits indirect semiconductor characteristics and the spin-orbit coupling (SOC) effect has slightly reduced its band gap.

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