Qingdong Ou
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View article: Parents’ understanding and attitudes toward the application of AI in pediatric healthcare: a cross-sectional survey study
Parents’ understanding and attitudes toward the application of AI in pediatric healthcare: a cross-sectional survey study Open
Objective To investigate parents’ understanding and attitudes toward the application of Artificial Intelligence (AI) in pediatric healthcare. Methods An observational, cross-sectional study was conducted using an ad hoc questionnaire. Betw…
View article: One-Step Transfer of Symmetric and Asymmetric Contacts for Large-Scale 2D Electronics and Optoelectronics
One-Step Transfer of Symmetric and Asymmetric Contacts for Large-Scale 2D Electronics and Optoelectronics Open
Two-dimensional (2D) semiconductors are highly promising candidates for thin-film transistor applications due to their scalability, transferability, atomic thickness, and relatively high carrier mobility. However, a substantial performance…
View article: Natural van der Waals Canalization Lens for Non‐Destructive Nanoelectronic Circuit Imaging and Inspection
Natural van der Waals Canalization Lens for Non‐Destructive Nanoelectronic Circuit Imaging and Inspection Open
Optical inspection has long served as a cornerstone non‐destructive method in semiconductor wafer manufacturing, particularly for surface and defect analysis. However, conventional techniques such as dark‐field scattering optics or atomic …
View article: Natural van der Waals canalization lens for non-destructive nanoelectronic circuit imaging and inspection
Natural van der Waals canalization lens for non-destructive nanoelectronic circuit imaging and inspection Open
Optical inspection has long served as a cornerstone non-destructive method in semiconductor wafer manufacturing, particularly for surface and defect analysis. However, conventional techniques such as bright-field and dark-field scattering …
View article: Pick-and-Place Transfer of Arbitrary-Metal Electrodes for van der Waals Device Fabrication
Pick-and-Place Transfer of Arbitrary-Metal Electrodes for van der Waals Device Fabrication Open
Van der Waals electrode integration is a promising strategy to create nearly perfect interfaces between metals and 2D materials, with advantages such as eliminating Fermi-level pinning and reducing contact resistance. However, the lack of …
View article: Selective Excitation of Bloch Modes in Canalized Polaritonic Crystals
Selective Excitation of Bloch Modes in Canalized Polaritonic Crystals Open
Polaritonic crystals (PoCs) have experienced significant advancements through involving hyperbolic polaritons in anisotropic materials such as $α$-MoO$_{\rm 3}$, offering a promising approach for nanoscale light control and improved light-…
View article: In-plane hyperbolic phonon polaritons: materials, properties, and nanophotonic devices
In-plane hyperbolic phonon polaritons: materials, properties, and nanophotonic devices Open
In-plane hyperbolic phonon polaritons (HPhPs) are phonon-mediated hybrid electromagnetic modes, particularly in two-dimensional (2D) van der Waals (vdW) crystals, which have attracted increasing attention because of their peculiar optical …
View article: Pick-and-place transfer of arbitrary-metal electrodes for van der Waals device fabrication
Pick-and-place transfer of arbitrary-metal electrodes for van der Waals device fabrication Open
Van der Waals electrode integration is a promising strategy to create near-perfect interfaces between metals and two-dimensional materials, with advantages such as eliminating Fermi-level pinning and reducing contact resistance. However, t…
View article: Conducting polymer hydrogels based on supramolecular strategies for wearable sensors
Conducting polymer hydrogels based on supramolecular strategies for wearable sensors Open
Conductive polymer hydrogels (CPHs) are gaining considerable attention in developing wearable electronics due to their unique combination of high conductivity and softness. However, in the absence of interactions, the incompatibility betwe…
View article: Monolithic van der Waals polariton lenses
Monolithic van der Waals polariton lenses Open
Polaritons, hybrid light and matter waves, offer a platform for subwavelength on-chip light manipulation. Recent works on planar refraction and focusing of polaritons all rely on heterogeneous components with different refractive indices. …
View article: Metasurfaces and their intelligent advances
Metasurfaces and their intelligent advances Open
Metasurfaces exhibit excellent performance in the regulation of optical field parameters, such as phase, amplitude, and polarization, by using nanounit structures. The characteristics of metasurface miniaturization and its combination with…
View article: A volatile polymer stamp for large-scale, etching-free, and ultraclean transfer and assembly of two-dimensional materials and its heterostructures
A volatile polymer stamp for large-scale, etching-free, and ultraclean transfer and assembly of two-dimensional materials and its heterostructures Open
The intact transfer and assembly of two-dimensional (2D) materials and their heterostructures are critical for their integration into advanced electronic and optical devices. Herein, we report a facile technique called volatile polymer sta…
View article: Hyperbolic polaritonic crystals with configurable low-symmetry Bloch modes
Hyperbolic polaritonic crystals with configurable low-symmetry Bloch modes Open
Near-field imaging of polaritonic crystal
View article: Unidirectionally excited phonon polaritons in high-symmetry orthorhombic crystals
Unidirectionally excited phonon polaritons in high-symmetry orthorhombic crystals Open
Advanced control over the excitation of ultraconfined polaritons—hybrid light and matter waves—empowers unique opportunities for many nanophotonic functionalities, e.g., on-chip circuits, quantum information processing, and controlling the…
View article: Negative reflection of nanoscale-confined polaritons in a low-loss natural medium
Negative reflection of nanoscale-confined polaritons in a low-loss natural medium Open
Negative reflection occurs when light is reflected toward the same side of the normal to the boundary from which it is incident. This exotic optical phenomenon is not only yet to be visualized in real space but also remains unexplored, bot…
View article: Phase‐Control of Single‐Crystalline Inorganic Halide Perovskites via Molecular Coordination Engineering (Adv. Funct. Mater. 16/2022)
Phase‐Control of Single‐Crystalline Inorganic Halide Perovskites via Molecular Coordination Engineering (Adv. Funct. Mater. 16/2022) Open
Molecular Coordination Engineering In article number 2109442, Asaph Widmer-Cooper, Wenxin Mao, Udo Bach, and co-workers demonstrate the precise control of crystallisation species for caesium inorganic halide perovskite materials by tuning …
View article: Negative reflection of polaritons at the nanoscale in a low-loss natural medium
Negative reflection of polaritons at the nanoscale in a low-loss natural medium Open
Negative reflection occurs when light is reflected towards the same side of the normal to the boundary from which it is incident. This exotic optical phenomenon, which provides a new avenue towards light manipulation, is not only yet to be…
View article: <scp>Hot‐electron emission‐driven</scp> energy recycling in transparent plasmonic electrode for organic solar cells
<span>Hot‐electron emission‐driven</span> energy recycling in transparent plasmonic electrode for organic solar cells Open
Plasmonic metal electrodes with subwavelength nanostructures are promising for enhancing light harvesting in photovoltaics. However, the nonradiative damping of surface plasmon polaritons (SPPs) during coupling with sunlight results in the…
View article: Tailoring topological transition of anisotropic polaritons by interface engineering in biaxial crystals
Tailoring topological transition of anisotropic polaritons by interface engineering in biaxial crystals Open
Polaritons in polar biaxial crystals with extreme anisotropy offer a promising route to manipulate nanoscale light-matter interactions. The dynamical modulation of their dispersion is great significance for future integrated nano-optics bu…
View article: Influence of direct deposition of dielectric materials on the optical response of monolayer WS2
Influence of direct deposition of dielectric materials on the optical response of monolayer WS2 Open
We investigate the effects of direct deposition of different dielectric materials (AlOx, SiOx, SiNx) onto atomically thin TMDC WS2 on its optical response using atomic layer deposition (ALD), electron beam evaporation (EBE), plasma-enhance…
View article: Hybridized Hyperbolic Surface Phonon Polaritons at α-MoO<sub>3</sub> and Polar Dielectric Interfaces
Hybridized Hyperbolic Surface Phonon Polaritons at α-MoO<sub>3</sub> and Polar Dielectric Interfaces Open
Surface phonon polaritons (SPhPs) in polar dielectrics offer new\nopportunities for infrared nanophotonics due to sub-diffraction confinement\nwith low optical losses. Though the polaritonic field confinement can be\nsignificantly improved…
View article: Edge-oriented and steerable hyperbolic polaritons in anisotropic van der Waals nanocavities
Edge-oriented and steerable hyperbolic polaritons in anisotropic van der Waals nanocavities Open
Highly confined and low-loss polaritons are known to propagate isotropically over graphene and hexagonal boron nitride in the plane, leaving limited degrees of freedom in manipulating light at the nanoscale. The emerging family of biaxial …
View article: Flat Lenses Based on 2D Perovskite Nanosheets
Flat Lenses Based on 2D Perovskite Nanosheets Open
The units in Figure 3c,d and Figure 5a-d of the originally published article are hereby corrected.In Figure 3c,d, the units on the x-axis and y-axis of (c) should be x(λ) and z(λ).The units of x-axis, y-axis, and z-axis of (d) should be x(…
View article: Atomically Thin Noble Metal Dichalcogenides for Phase-Regulated Meta-optics
Atomically Thin Noble Metal Dichalcogenides for Phase-Regulated Meta-optics Open
Owing to its good air stability and high refractive index, two-dimensional (2D) noble metal dichalcogenide shows intriguing potential for versatile flat optics applications. However, light field manipulation at the atomic scale is conventi…