检索结果-内蒙古大学图书馆

2023 Conference on Lasers and Electro-Optics, CLEO 2023

作者： Rukh, Lala Colacion, Gabriel Drake, Tara Center of High Technology Materials Optical Science and Engineering University of New Mexico AlbuquerqueNM United States Department of Physics and Astronomy University of New Mexico AlbuquerqueNM United States

This work reports two robust methods for fabrication of high-quality factor Q SiN resonators using a polymer-based mask and a metallic mask. We compare the etch uniformity, sidewall quality, and quality factors of the... 详细信息

ISBN: (纸本)9781957171258

关键词： Silicon nitride

来源：评论

学校读者我要写书评

暂无评论

Diffuse phase transition and ferroelectric/piezoelectric properties of Pr-doped 28PIN-38PMN-34PT ceramics

引用

Journal of Electroceramics 2025年 1-11页

作者： Fan, Hongle Xie, Bangxian Xu, Renjun Chen, Chunming Yang, Aihong Cao, Xueli Liu, Laijun Guangxi Key Lab of Optical and Electronic Functional Materials and Devices Collaborative Innovation Center for Exploration of Nonferrous Metal Deposits and Efficient Utilization of Resources College of Materials Science and Engineering Guilin University of Technology Guilin541004 China Guanglong S & T Zone No. 8 High-tech industry Park Chaoyang Road Guilin541004 China Suining Hongming Chinocera Technology Co. Ltd Sichuan629000 China College of Physics and Electronic Information Engineering Guilin University of Technology Guilin541004 China

Transparent piezoelectric ceramic Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 (PIN-PMN-PT) can couple several physical effects such as acoustics, optics, mechanics and electricity, which can be used as mechanical-electro-optical multifunctional devices. The diffuse phase transition induced by composition has a significant impact on piezoelectric/ferroelectric properties. In this paper, we found a dramatic influence of Pr on the diffusion phase transition and electric properties of 28PIN-38PMN-34PT-xPr. A phase coexistence of rhombohedral and tetragonal with trace of pyrochlore phase appears in the system, and the fraction of rhombohedral phase increases firstly and then decreases with the increase of Pr. Temperature dependence of dielectric permittivity exhibits a clear change from diffusion phase transition behavior (0%x 1.5%) to frequency dispersion behavior (2%x 3.5%). The size of polar nanoregions (PNRs) remains unchanged for x 1.5% characterized by the phenomenological statistical model, and it decreases first and then increases for x 1.5%, which is consistent with the trend of spontaneous polarization and piezoelectric coefficient having the same change with PNRs. This work gives an insight on the relationship between electrical properties and phase structure modified by composition in perovskite oxides. © The Author(s), under exclusive licence to Springer science+Business Media, LLC, part of Springer Nature 2025.

关键词： Piezoelectric ceramics

来源：评论

学校读者我要写书评

暂无评论

Scattering exceptional point in the visible

引用

Light(science & Applications) 2023年第10期12卷 2228-2235页

作者： Tao He Zhanyi Zhang Jingyuan Zhu Yuzhi Shi Zhipeng Li Heng Wei Zeyong Wei Yong Li Zhanshan Wang Cheng-Wei Qiu Xinbin Cheng MOE Key Laboratory of Advanced Micro-Structured Materials Shanghai 200092China Institute of Precision Optical Engineering School of Physics Science and EngineeringTongji UniversityShanghai 200092China Shanghai Institute of Intelligent Science and Technology Tongji UniversityShanghai 200092China Shanghai Frontiers Science Center of Digital Optics Shanghai 200092China Shanghai Professional Technical Service Platform for Full-Spectrum and High-Performance Optical Thin Film Devices and Applications Shanghai 200092China Department of Electronic Science and Technology Tongji UniversityShanghai 201804China Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore Institute of Acoustics School of Physics Science and EngineeringTongji UniversityShanghai 200092China

Exceptional point (EP) is a special degeneracy of non-Hermitian systems. One-dimensional transmission systems operating at EPs are widely studied and applied to chiral conversion and sensing. Lately, two-dimensional systems at EPs have been exploited for their exotic scattering features, yet so far been limited to only the non-visible waveband. Here, we report a universal paradigm for achieving a high-efficiency EP in the visible by leveraging interlayer loss to accurately control the interplay between the lossy structure and scattering lightwaves. A bilayer framework is demonstrated to reflect back the incident light from the left side ( | r_(−1) | >0.999) and absorb the incident light from the right side ( | r_(+1) | < 10^(–4)). As a proof of concept, a bilayer metasurface is demonstrated to reflect and absorb the incident light with experimental efficiencies of 88% and 85%, respectively, at 532 nm. Our results open the way for a new class of nanoscale devices and power up new opportunities for EP physics.

关键词： visible exceptional incident

来源：评论

学校读者我要写书评

暂无评论

Exploring the mechanisms of calcium carbonate deposition on various substrates with implications for effective anti-scaling material selection

引用

Petroleum science 2024年第4期21卷 2870-2880页

作者： Lu Gong Fei-Yi Wu Ming-Fei Pan Jun Huang Hao Zhang Jing-Li Luo Hong-Bo Zeng College of Science China University of PetroleumBeijing102249China Beijing Key Laboratory of Optical Detection Technology for Oil and Gas China University of PetroleumBeijing102249China Basic Research Center for Energy Interdisciplinary College of ScienceChina University of PetroleumBeijing102249China Department of Chemical and Materials Engineering University of AlbertaEdmontonAlbertaT6G 1H9Canada Key Laboratory of High Efficiency and Clean Mechanical Manufacture(Ministry of Education) School of Mechanical EngineeringShandong University

The unexpected scaling phenomena have resulted in significant damages to the oil and gas industries,leading to issues such as heat exchanger failures and pipeline *** is of practical and fundamental importance to understand the scaling mechanisms and develop efficient anti-scaling ***,the underlying surface interaction mechanisms of scalants(e.g.,calcite)with various substrates are still not fully *** this work,the colloidal probe atomic force microscopy(AFM)technique has been applied to directly quantify the surface forces between calcite particles and different metallic substrates,including carbon steel(CR1018),low alloy steel(4140),stainless steel(SS304)and tungsten carbide,under different water chemistries(i.e.,salinity and pH).Measured force profiles revealed that the attractive van der Waals(VDW)interaction contributed to the attachment of the calcium carbonate particles on substrate surfaces,while the repulsive electric double layer(EDL)interactions could inhibit the attachment *** salinity and acidic p H conditions of aqueous solutions could weaken the EDL repulsion and promote the attachment *** adhesion of calcite particles with CR1018 and4140 substrates was much stronger than that with SS304 and tungsten carbide *** bulk scaling tests in aqueous solutions from an industrial oil production process showed that much more severe scaling behaviors of calcite was detected on CR1018 and 4140 than those on SS304 and tungsten carbide,which agreed with surface force measurement ***,high salinity and acidic p H can significantly enhance the scaling *** work provides fundamental insights into the scaling mechanisms of calcite at the nanoscale with practical implications for the selection of suitable antiscaling materials in petroleum industries.

关键词： Scaling phenomenon Metallic substrates Surface forces Bulk scaling tests

来源：评论

学校读者我要写书评

暂无评论

Intrinsic persistent room temperature phosphorescence derived from 1H-benzo[f]indole itself as a guest

引用

Chinese Chemical Letters 2023年第7期34卷 449-453页

作者： Danman Guo Yuyuan Wang Jinzheng Chen Yifeng Cao Yiling Miao Huahua Huang Zhenguo Chi Zhiyong Yang Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional FilmsSchool of ChemistrySun Yat-sen UniversityGuangzhou 510275China School of Materials Science and Engineering Sun Yat-sen UniversityGuangzhou 510275China Guangdong Provincial Key Laboratory of Optical Chemicals XinHuaYue GroupMaoming 525000China

The influence of 1H-benzo[f]indole(Bd) and its derivatives on room temperature phosphorescence(RTP)has raised great concern since they were found to significantly affect RTP of the extensively studied carbazole(Cz) derivatives. However, the role of Bd itself existing in Cz-based or other doping systems was still unclear. In order to clarify its intrinsic phosphorescent property, Bd was introduced as a guest into different organic matrixes including substituted Cz derivatives and polymers. The phosphorescence located in 560–620 nm was confirmed to be derived from Bd itself, which can be detected whatever Bd was doped in the crystal or amorphous state of Cz derivatives. The suitable energy gap between Cz derivatives and Bd is the key to achieve ultralong RTP of Bd. Additionally, when doped in polymers with plenty of hydrogen bonds, RTP of Bd with lifetime over 280 ms was easily obtained. Among them, Bd@PHEMA(poly(hydroxyethyl methacrylate) exhibited superior phosphorescence, with yellow afterglow lasting for over 2.5 s. Therefore, this work demonstrated that a new organic RTP phosphor, Bd, is discovered, and ultralong RTP of Bd can be achieved not only doped in Cz derivatives but also in polymers as the hosts.

关键词： Room temperature phosphorescence Host-guest 1H-benzo[f]indole Amorphous Hydrogen bonding

来源：评论

学校读者我要写书评

暂无评论

Design and Characterization of Octave Spanning, 1-THz Kerr Frequency Microcombs in Silicon Nitride

Design and Characterization of Octave Spanning, 1-THz Kerr F...

引用

CLEO: Applications and technology in CLEO 2024, CLEO: A and T 2024 - Part of Conference on Lasers and Electro-Optics

作者： Melton, Tristan Aldhafeeri, Alwaleed Chin, Hsiao Hsuan Rukh, Lala Colación, Gabriel M. Drake, Tara E. Wong, Chee Wei Mesoscopic Optics and Quantum Electronics Laboratory University of California Los AngelesCA90095 United States Optical Science & Engineering Program Center for High Technology Materials University of New Mexico AlbuquerqueNM87106 United States Dept. of Physics & Astronomy University of New Mexico AlbuquerqueNM87106 United States

We design microresonators for octave-spanning soliton frequency comb generation in silicon nitride. We lock the repetition rate via an electro-optic comb and achieve phase noise of -130-dBc/Hz, with the resultant modu... 详细信息

关键词： Silicon nitride

来源：评论

学校读者我要写书评

暂无评论

Design and Characterization of Octave Spanning, 1-THz Kerr Frequency Microcombs in Silicon Nitride

Design and Characterization of Octave Spanning, 1-THz Kerr F...

引用

2024 Conference on Lasers and Electro-Optics, CLEO 2024

ISBN: (纸本)9781957171395

关键词： Silicon nitride

来源：评论

学校读者我要写书评

暂无评论

Quadratic phase mismatch in multisoliton interferograms based on time-stretched dispersive Fourier transformation

引用

Physical Review A 2024年第5期109卷 053524-053524页

作者： Zeqing Li Benhai Wang Wenbin He Qi Huang Xiaocong Wang Xintong Zhang Meng Pang State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science Russell Centre for Advanced Lightwave Science Center of Materials Science and Optoelectronics Engineering Innovation and Integration Center of New Laser Technology Department of Optics and Optical Engineering

The time-stretched dispersive Fourier transform method (TS-DFT) has been widely used to analyze multisoliton structures in ultrafast lasers, featuring shot-by-shot access to their spectral interferograms. Most exemplary structures consist of two interacting solitons whose spacing and relative phase can be simply retrieved from their interferograms mapped in time domain by TS-DFT. However, such analysis has not been elaborated for structures with more solitons that could result in a complicated TS-DFT signal. Here we report our theoretical inference of a deterministic discrepancy when retrieving structures consisting of more than two solitons with their TS-DFT signal. We unveil the underlying source of these discrepancies as a result of the quadratic phase mismatch induced by TS-DFT and correspondingly propose an improved retrieval method. Our work may provide a theoretical guideline for conducting unambiguous analysis of complex multipulse structures using TS-DFT, particularly when the dispersive stretching ratio is limited.

关键词： Classical optics Lasers optical solitons

来源：评论

学校读者我要写书评

暂无评论

Subtractive processing of thick silicon nitride waveguide resonators: a comparison of soft and hard etch templates 25

Subtractive processing of thick silicon nitride waveguide re...

引用

Laser Resonators, Microresonators, and Beam Control XXV 2023

作者： Colacion, Gabriel M. Rukh, Lala Stone, Brandon Drake, Tara E. Optical Science & Engineering Program Center for High Technology Materials University of New Mexico 1313 Goddard SE AlbuquerqueNM87106 United States Dept. of Physics & Astronomy University of New Mexico 210 Yale Blvd NE AlbuquerqueNM87106 United States

ISBN: (纸本)9781510659193

Chip-based photonic microresonators are attractive for a multitude of applications owing to their small form factors and compatibility with photonic integration and standard CMOS fabrication. Within the last decade, the ring resonator geometry has gained widespread adoption in the application of optical frequency comb generation. However, these devices often require waveguides several hundreds of nanometers thick, posing a challenge for subtractive fabrication processes where the desired pattern must be chemically etched with the use of a protective "mask" pattern. Here, we demonstrate two procedures for subtractive processing of thick SiN waveguides based on both a polymer-based "soft" photoresist mask and a chromium metallic "hard" mask as etch templates. optical characterization of our devices fabricated with both soft mask and hard mask techniques demonstrate quality factors of 320k ± 100k and 500k ± 180k., respectively. Furthermore, this work details two reliable pathways for achieving high quality optical microring resonators and illustrates the benefits and drawbacks of these two techniques. © 2023 SPIE.

关键词： Silicon nitride

来源：评论

学校读者我要写书评

暂无评论

Exciton-harvesting enabled efficient charged particle detection in zero-dimensional halides

引用

Light(science & Applications) 2024年第9期13卷 1944-1955页

作者： Qian Wang Chenger Wang Hongliang Shi Jie Chen Junye Yang Alena Beitlerova Romana Kucerkova Zhengyang Zhou Yunyun Li Martin Nikl Xilei Sun Xiaoping OuYang Yuntao Wu Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai 201899China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China National Engineering Research Center for Rare Earth Grirem Advanced Materials Co.Ltd.and General Research Institute for Nonferrous MetalsBeijing 100088China Department of Physics Beihang UniversityBeijing 100191China Spallation Neutron Source Science Center Dongguan 523803China Department of Optical Materials Institute of Physics of the Czech Academy of SciencesPrague 16200Czech Republic Northwest Institute of Nuclear Technology Xi’an 710024China

materials for radiation detection are critically important and urgently demanded in diverse fields,starting from fundamental scientific research to medical diagnostics,homeland security,and environmental *** halides(LDHs)exhibiting efficient self-trapped exciton(STE)emission with high photoluminescence quantum yield(PLQY)have recently shown a great potential as ***,an overlooked issue of excitonexciton interaction in LDHs under ionizing radiation hinders the broadening of its radiation detection ***,we demonstrate an exceptional enhancement of exciton-harvesting efficiency in zero-dimensional(0D)Cs_(3)Cu_(2)I_(5):Tl halide single crystals by forming strongly localized Tl-bound *** of the suppression of nonradiative exciton-exciton interaction,an excellentα/βpulse-shape-discrimination(PSD)figure-of-merit(FoM)factor of 2.64,a superior rejection ratio of 10^(−9),and a high scintillation yield of 26000 photons MeV−1 under 5.49 MeVα-ray are achieved in Cs_(3)Cu_(2)I_(5):Tl single crystals,outperforming the commercial ZnS:Ag/PVT composites for charged particle detection ***,a radiation detector prototype based on Cs_(3)Cu_(2)I_(5):Tl single crystal demonstrates the capability of identifying radioactive 220Rn gas for environmental radiation monitoring *** believe that the exciton-harvesting strategy proposed here can greatly boost the applications of LDHs materials.

关键词： composites particle dimensional

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：