3D Morphable models of the human body capture variations among subjects and are useful in reconstruction editing applications. Current dental use an explicit mesh scene representation model only teeth, ignoring gum. In this work, we present first parametric morphable for both teeth Our uses implicit is learned from rigidly aligned scans. It based on a component-wise each tooth gum, together with learnable latent code such components. also learns template shape thus enabling several...

We report on, in this letter, a phenomenon that the central zerointensity point of doughnut beam, caused by phase singularity, disappears focus, when such beam is focused high numerical-aperture objective free space. In addition, focal shape given topological charge exhibits increased ring intensity direction orthogonal to incident polarization state and an elongation direction. These phenomena are effect depolarization, associated with objective, become pronounced use obstruction aperture.

Reciprocity is a fundamental principle of wave physics related to time-reversal symmetry. Nonreciprocal behaviors have been pursued for decades because their great scientific significance and tremendous potential applications. However, nonreciprocity devices based on manipulation non-topological charge (TC) in most studies date. Here, we introduce the rotational Doppler effect (RDE) into acoustic system achieve nonreciprocal control TC beam. We use metasurface generate vortex beam with...

Orthognathic surgery consultation is essential to help patients understand the changes their facial appearance aftersurgery. However, current visualization methods are often inefficient and inaccurate due limited pre- post-treatment data complexity of treatment. To overcome these challenges, this study aims develop a fullyautomated pipeline that generates accurate efficient 3D previews postsurgical appearances for withorthognathic treatment without requiring additional medical images. The...

3D bit optical data storage has the ability to reach Tbytes on a recording medium no larger than compact disc using two-photon excitation and multi-layer recording. The introduction of poly-vinyl carbazole (PVK) based photorefractive polymer as material allows system rewrite recorded information via effect.[1,2] In this paper, we demonstrate use continuous wave illumination for three-dimensional (3D) under in new poly(methylmethacrylate)-based (PMMA) polymer. This achievement makes it...

Microvoid channels were generated by local melting in a solidified polymer resin sample moving perpendicular to the focus of high numerical-aperture objective under visible femtosecond-pulsed illumination. Channel size, surface quality, and density channel vicinity depended on laser intensity scanning speed. Electron microscope images revealed elliptical cross sections 0.7–1.3 μm lateral diameter an elongation focusing direction approximately 50%. A 20 layer woodpile-type photonic crystal...

X-ray photoelectron spectroscopy was used to determine the level of surface fluorination damage Ge2Sb2Te5 (GST) etched by fluorocarbon gases at different F/C ratios. When blank GST etched, gas with a higher ratio produced thinner C–F polymer on but fluorinated Ge, Sb, and Te compounds were observed in remaining GST. sidewall features investigated, thicker layer gas, indicating more due difficulty preventing F diffusion into through layer.

Focusing is extensively researched in bioimaging, medicine, and quantum computation. However, single focal point short length restrict imaging optical manipulation at long distances. In this study, we propose what believe to be a novel method, namely the coherent superposition of double-ring circular Airy Gaussian beams (DR-CAiGBs) achieve multiple autofocusing over Without complex structures, theoretical simulations experimental verifications demonstrate that DR-CAiGBs can generate points...

This paper proposes an algorithm for unsupervised Word Sense Disambiguation to bypass the knowledge bottleneck faced by supervised approaches. By simulating semantic inference process performed human language users, makes use of a thesaurus obtain potential substitute words target word in sentence, builds constructs replacing with words, uses large-scale dependency parsed corpora calculate likelihood constructs, and then best which help specify sense sentence. Experiments WordNet 2.1 English...

In order to manage and organize information on the web, we propose a novel web page classification strategy integrating topic model SVM. We use harness implicit pages for feature extraction. Accuracy of is 84.15%, 2.23% superior traditional based CHI.

ABSTRACT In this study, the characterization of short‐circuit current within hundreds nanoseconds is proposed to study effect heat treatment on fast space charge behavior in polarized biaxially oriented polypropylene (BOPP) films. The BOPP films were cooled either quickly or slowly during sample preparation. damped oscillating feature was found all film samples, but periods for samples prepared by cooling rate decrease faster. Bipolar injection observed thermal pulse (TP) measurement....

Niobium nitride superconducting nanowire single-photon detectors were fabricated on thermally oxidized silicon substrates with large active areas of 30 μm × μm. To achieve non-constricted detectors, we improved the film growth and electron beam lithography process to fabricate uniform 100-nm wide NbN nanowires a fill factor 50%. The devices showed 72.4% system detection efficiency (SDE) at 100-Hz dark count rate (DCR) 74-ps timing jitter, measured fiber communication wavelength 1550 nm....

The stability and galloping characteristics of iced quad bundle conductor are studied in this paper. Firstly, the aerodynamic coefficients single under four different working conditions obtained by wind tunnel test. Secondly, equivalent at central axis obtained, compared with each sub-conductor conductor. Then, based on Den Hartog instability mechanism Nigol mechanism, stable unstable range analyzed. Finally, combining results test show that increase decreasing speed. analyses higher speed...

Photo-stimulated discharge (PSD) method is one of the ways to measure trap level space charge in dielectric materials. Compared with thermally stimulated (TSD) method, it has no observable destroy sample's microstructure during procedure light scanning and can therefore be considered a more accurate measuring method. However, may possibly lead occurrence external photoelectric effect between electrode-dielectric interfaces or internal sample bulk, where extra current due two effects...

Superconducting nanowire single-photon detectors (SNSPDs) with a composite optical structure composed of phase-grating and cavity structures are designed to enhance both the system detection efficiency response bandwidth. Numerical simulation by finite-difference time-domain method shows that photon absorption capacity SNSPDs can be enhanced significantly adjusting parameters at multiple frequency bands. The superconducting nanowires reaches 70%, 72%, 60.73%, 61.7%, 41.2%, 46.5% wavelengths...

Single photon detection technology is a frontier in the field of detection. As newly developed technique, superconductor single detector (SSPD) has many attractive advantages such as wide response bandwidth, low noise, and fast speed. In this paper, we experimentally demonstrate high performance SSPD with large system efficiency dark count rate at infrared wavelengths. The devices structure, fabrication process are presented details. For our SSPD, achieve 60% 1550 nm 100 cps. time jitter...

This study proposed what we believe to be a novel method for fabricating superconducting nanowire single-photon detectors (SNSPDs) with high efficiency, polarization insensitivity, and ultrafast response. To achieve these properties in niobium nitride (NbN) SNSPDs, the periodic four-split rings (PFSR) were positioned above nanowires. design uses localized surface plasmon resonance enhance electric field around For an incident light wavelength of 1550 nm, PFSR-SNSPD structure achieved...

Hollow beam is a peculiar structure beam, which has been widely used in various areas. Here, we propose novel diffraction optical element to generate tunable hollow beams. This composed of periodic concentric rings. The phase each ring periodically distributed between −π and π satisfies complex variable function. By tuning the parameters structure, can flexibly manipulate size length beam. be increased from 98 λ 248 λ, full width at half maximum varies 0.43 0.61 λ. Moreover, light intensity...

Traditional neural network models face challenges in detecting tiny objects due to insufficient appearance information. The ventral visual stream the brain is a group of cortical regions arranged along occipital and temporal lobes, composed series circuits that receive information retina innervate it through inferior cortex, enabling object recognition detection. Furthermore, long or short feedback connections from downstream upstream regions, local recurrence within stream, are believed be...