Search

Your search keyword '"Sun, Haoyang"' showing total 554 results
Start Over Author "Sun, Haoyang"
554 results on '"Sun, Haoyang"'

3. Tantalum Coated Zirconia to Toughen Dental Implants

Author

Reginato, Gabriel, Kwandy, Kimberly, Sun, Haoyang, Osilla, Dean, Segger, Anthea, and Victorino, Lara

Subjects
Dental ceramics, dental implants, zirconia, yttria-stabilized zirconia, 3Y-TZP, ATZ, alumina-toughened zirconia, tantalum, ceramic doping, ceramic toughening, phase transformation toughening, poster, UCI Dean's Choice Award 2023
Abstract

Abstract:  Currently, around 50% (~178 million) of all Americans are missing at least 1 tooth, with 12% (~40 million) of Americans missing all of their teeth. Dental implants are a common solution to this issue; titanium is the leading material of choice. Zirconia ceramic dental implants are a suitable replacement for titanium, but are often criticized for their brittleness. By developing a tantalum functional gradient coating, we hope to increase the viability of zirconia ceramic materials for dental implants. Two sets of material were chosen to test the proprietary BruxZir tantalum ion solution: yttria stabilized zirconia (3Y-TZP) and alumina toughened zirconia (ATZ). Solutions with varying concentrations of 0%, 10%, 15%, and 30% weight percent tantalum were prepared, and the ceramic samples were coated and sintered. Each sample was analyzed through various characterization methods, including SEM, EDS, XRD, nanoindentation, and Raman spectroscopy to observe how the solution impacted each sample’s microstructure and mechanical properties. Although our results are still in progress, we found evidence of an inverse relationship between tantalum concentration and grain size.

Published
2023

4. Enhanced radiative cooling with Janus optical properties for low-temperature space cooling

Author

Yang Meng, Zeng Yijun, Du Qingyuan, Sun Haoyang, Yin Yingying, Yan Xiantong, Jiang Mengnan, Pan Chin, Sun Dazhi, and Wang Zuankai

Subjects
radiative cooling, janus optical property, electrospinning, surface cooling, space cooling, Physics, QC1-999
Abstract

Passive daytime radiative cooling that could provide sub-ambient cooling emerges as a promising technology to reduce household energy consumption. Nonetheless, prevailing studies are predominantly focused on surface cooling, often overlooking its adaptability to enclosed spaces with active cooling technologies. Here we present a multilayer radiative cooling film (J-MRC) with Janus optical properties in the mid-infrared region, consisting of the nanoporous polyethylene films, the polyethylene oxide film, and silver nanowires. The top side of the J-MRC functions as a conventional radiative cooling material to supply sub-ambient surface cooling, while the bottom side with low mid-infrared emissivity transfers limited heat via thermal radiation to the low-temperature enclosures. Our experiments validate that the J-MRC possesses an enhanced space cooling performance in comparison to the conventional radiative cooling film. This work provides a valuable design concept for radiative cooling materials, thereby expanding their practical scenarios and contributing to reduce the carbon emission.

Published
2024
Full Text
View/download PDF

12. Study on Grease Elasto-Hydrodynamic Lubrication of Deep Groove Ball Bearings

Author

Wu, Hao, Zhang, Shenghan, Sun, Haoyang, Wang, Jirong, Zhang, Hongxin, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Haddar, Mohamed, Editorial Board Member, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Yadav, Sanjay, editor, Kumar, Harish, editor, Wan, Meher, editor, Arora, Pawan Kumar, editor, and Yusof, Yusri, editor

Published
2023
Full Text
View/download PDF

18. Discriminative and Robust Online Learning for Siamese Visual Tracking

Author

Zhou, Jinghao, Wang, Peng, and Sun, Haoyang

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

The problem of visual object tracking has traditionally been handled by variant tracking paradigms, either learning a model of the object's appearance exclusively online or matching the object with the target in an offline-trained embedding space. Despite the recent success, each method agonizes over its intrinsic constraint. The online-only approaches suffer from a lack of generalization of the model they learn thus are inferior in target regression, while the offline-only approaches (e.g., convolutional siamese trackers) lack the target-specific context information thus are not discriminative enough to handle distractors, and robust enough to deformation. Therefore, we propose an online module with an attention mechanism for offline siamese networks to extract target-specific features under L2 error. We further propose a filter update strategy adaptive to treacherous background noises for discriminative learning, and a template update strategy to handle large target deformations for robust learning. Effectiveness can be validated in the consistent improvement over three siamese baselines: SiamFC, SiamRPN++, and SiamMask. Beyond that, our model based on SiamRPN++ obtains the best results over six popular tracking benchmarks and can operate beyond real-time.

Published
2019

30. A True Random Number Generator Based on ADC Random Interval Sampling

Author

Li, Gang, Sun, Haoyang, Wu, Peiqi, Li, Zehua, Li, Zhenbing, Fang, Xiaochuan, Chen, DeXu, Wen, Guangjun, Filipe, Joaquim, Editorial Board Member, Ghosh, Ashish, Editorial Board Member, Prates, Raquel Oliveira, Editorial Board Member, Zhou, Lizhu, Editorial Board Member, Sun, Xingming, editor, Zhang, Xiaorui, editor, Xia, Zhihua, editor, and Bertino, Elisa, editor

Published
2022
Full Text
View/download PDF

31. Numerical Simulation of Heat Flow Field on the Outer Surface of the Airframe

Author

Tong, Xiaolong, Li, Zhenghong, Liu, Liangliang, Sun, Haoyang, Jin, Haichuan, Chinese Society of Aeronautics and Astronautics, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, and Zhang, Junjie James, Series Editor

Published
2022
Full Text
View/download PDF

44. Ultrasensitive nanoscale optomechanical electrometer using photonic crystal cavities

Author

Xia Ji, Qiao Qifeng, Sun Haoyang, Huang Yongjun, Chau Fook Siong, and Zhou Guangya

Subjects
cavity optomechanics, electrometer, electrostatic spring softening, photonic crystal nanobeam resonator, Physics, QC1-999
Abstract

High-precision detection of electric charge is critical for physical, chemical, and biological measurements. Nanophotonic optomechanical system confines the optical field at the nanoscale and enables a strong interaction between optical cavity and mechanical resonator. Its high optical quality factor cavity and strong optomechanical coupling are promising for precision sensing applications. Here an integrated optomechanical electrometer is proposed for the electric charge sensing using a zipper cavity with a suspended photonic crystal nanobeam (PCN) acting as a movable mechanical resonator. As the electrostatic force arising from the electric voltage to be measured interacts with the mechanical motion of the movable PCN and modulates its resonance through electrostatic stiffening effect, optomechanical coupling transduces the mechanical motion to the optical field with enhanced sensitivity. The resonance shift of the mechanical resonator can be monitored to detect the electric voltage with a sensitivity of 0.007 Hz/mV2$\mathrm{Hz}/\mathrm{m}{\mathrm{V}}^{2}$. Moreover, the sensing performance can be further enhanced with the operation of the optomechanical electrometer in the self-sustained oscillation above threshold power. Owing to the narrow-linewidth of detector radio frequency (RF) spectrum with a large peak-to-noise floor ratio (up to 73.5 dB), the enhanced electrical sensitivity of 0.014 Hz/mV2$\mathrm{Hz}/\mathrm{m}{\mathrm{V}}^{2}$ is achieved with a high resolution of 1.37 mV2Hz−1/2$1.37\,\mathrm{m}{\mathrm{V}}^{2}\mathrm{H}{\mathrm{z}}^{-1/2}$. A theoretical minimal detectable electrostatic charge is calculated as 1.33×10−2 eHz−1/2$1.33{\times}{10}^{-2}\,\mathrm{eH}{\mathrm{z}}^{-1/2}$ by converting the measured electric voltage versus RF shift to an approximatively linear relationship. This on-chip optomechanical electrometry scheme provides a powerful solution to the ultrasensitive determination of charged nanoparticles in biological and chemical applications.

Published
2022
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results