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Effective Energy Density of glass Rejuvenation

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Acta Mechanica Solida Sinica 2022年第5期35卷 746-754页

作者： Gan Ding Feng Jiang Lanhong Dai Minqiang Jiang State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an710049China State Key Laboratory of Nonlinear Mechanics Institute of MechanicsChinese Academy of SciencesBeijing100190China School of Engineering Science University of Chinese Academy of SciencesBeijing100049China

glasses with rejuvenated structures usually exhibit improved room-temperature plasticity,which facilitates their applications.However,glass rejuvenation requires external energy injection to“shake up”the frozen-in disordered structure.In this work,we give the answer to how much the required energy is.According to the constitutive model of amorphous plasticity,we find that the applied stress higher than the steady-state flow value can effectively induce the structural disordering in terms of the generation of free volume.Therefore,the effective energy density(EED)of structural rejuvenation is defined as the integral of this effective stress on the corresponding strain.By tailoring the applied strain,strain rate,temperature and initial free volume,different degrees of structural rejuvenation are achieved,which show a generally linear correlation with the defined EED.This work deepens the understanding of glass rejuvenation from an energy perspective.

关键词： glass Structural rejuvenation Effective energy density Shear transformations Free volume

Pressureless crystallization of glass toward scintillating composite with high crystallinity for radiation detection

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Journal of Materials Science & Technology 2022年第34期129卷 173-180页

作者： Junzhou Tang Shichao Lv Ziyu Lin Guanxin Du Manyun Tang Xu Feng Junpeng Guo Xiang Li Junfeng Chen Lei Wei Jianrong Qiu Shifeng Zhou State Key Laboratory of Luminescent Materials and Devices School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510640China Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and DevicesGuangzhou 510640China Shanghai Hapstar M&E Equipment Co. Ltd.Shanghai 201109China Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai 201800China School of Electrical and Electronic Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore College of Optical Science and Engineering State Key Laboratory of Modern Optical InstrumentationZhejiang UniversityHangzhou 310027China

The construction of scintillating ceramics is of great technological importance for various fundamental applications, including medical diagnostic, security inspection, resource exploration and particle physics. The chief challenge is the facile and scalable synthesis of scintillating ceramics with the desirable combination of pore-free, reliable mechanical properties and excellent scintillating performance. Here we present a pressureless glass crystallization strategy for the construction of scintillating composite with high crystallinity. The fabricated scintillating composites are featured by small optical turbidity, excellent mechanical properties, and efficient scintillating luminescence with the scintillating light yield of 15,000 pH/MeV and about 2.46 times higher than that of the commercial BGO single crystal. Moreover, the scintillating composite derived radiation detector device is successfully elaborated. The practical application for monitoring gamma ray is demonstrated and the precision of the device is less than that of the tolerable deviation of 30%. Our results suggest an innovative approach for expanding the category of scintillating material candidates, pointing to practical application in the field of radiation detection.

关键词： glass glass crystallization Optical materials Composite Luminescence

Realizing translucency in aluminosilicate glass at ultralow temperature via cold sintering process

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Journal of Advanced Ceramics 2022年第11期11卷 1714-1724页

作者： Jie GAO Kangjing WANG Wei LUO Xiaowei CHENG Yuchi FAN Wan JIANG State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Institute of Functional MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620China Department of Chemistry Fudan UniversityShanghai 200438China

glass with high visible-light transparency is widely considered as the most important optical material,which typically requires a processing temperature higher than 1000℃.Here,we report a translucent aluminosilicate glass that can be prepared by cold sintering process(CSP)at merely 300℃.After eliminating structural pores in hexagonal faujasite(EMT)-type zeolite by heat treatment,the obtained highly active nanoparticles are consolidated to have nearly full density by adding NaOH solution as liquid aids.However,direct densification of EMT powder cannot remove the structural pores of zeolite completely,leading to an opaque compact after the CSP.It is proved that the chemical reaction between the NaOH-and zeolite-derived powders is highly beneficial to dissolution–precipitation process during sintering,leading to the ultra-low activation energy of 27.13 kJ/mol.Although the addition of 5 M NaOH solution greatly promotes the densification via the reaction with aluminosilicate powder,lower or higher concentration of solvent can deteriorate the transmittance of glass.Additionally,the CSP-prepared glass exhibits a Vickers hardness of 4.3 GPa,reaching 60%of the reported value for spark plasma sintering(SPS)-prepared sample.

关键词： glass cold sintering process(CSP) optical properties mechanical properties

Femtosecond laser textured porous nanowire structured glass for enhanced thermal imaging

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Chinese Optics Letters 2022年第3期20卷 153-156页

作者：吴婷妮吴志鹏何玉春朱卓王凌霄银恺 Hunan Key Laboratory of Nanophotonics and Devices School of Physics and ElectronicsCentral South UniversityChangsha 410083China State Key Laboratory of High Performance and Complex Manufacturing College of Mechanical and Electrical EngineeringCentral South UniversityChangsha 410083China

Infrared(IR)thermal imaging has aroused great interest due to its wide application in medical,scientific,and military fields.Most reported approaches for regulating thermal radiation are aimed to realize IR camouflage and are not applicable to enhance thermal imaging.Here,we introduce a simple and effective method to process porous glass by femtosecond laser scanning,where distributed nanocavities and nanowires were produced,which caused improvement of the treated glass emissivity.The as-prepared sample possessed better IR thermal radiation performance but lower transmittance to visible light.We also demonstrated its applicability by placing it in different backgrounds,where the IR image temperature of laser-treated glass was closer to the actual environment,and this strategy may provide a new vision for enhanced thermal imaging.

关键词： femtosecond laser thermal radiation texture micro/nanostructures glass

Deconstructing the intra-tumor subclonal heterogeneity of lung synchronous ground-glass nodules using whole-genome sequencing

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Signal Transduction and Targeted Therapy 2022年第6期7卷 1888-1890页

作者： Yijiu Ren Minfang Song Yunlang She Huikang Xie Hui Zheng Chang Chen Yiwen Zhang Department of Thoracic Surgery Shanghai Pulmonary HospitalTongji University School of MedicineShanghaiChina School of Life Science and Technology ShanghaiTech UniversityShanghaiChina State Key Laboratory of Biotherapy West China HospitalSichuan University and Collaborative Innovation Center for BiotherapyChengduChina

Dear Editor,The persistent presence of ground-glass opacity nodules(GGN)on thin-section computed tomography(CT)usually suggests the presence of lung adenocarcinoma,1 which include atypical adenomatous hyperplasia(AAH),adenocarcinoma in situ(AIS),minimally invasive adenocarcinoma,and invasive adenocarcinoma(AD).2 Recent data indicate that up to 20%of GGN patients(3%of the screening population)are diagnosed with synchronous multiple ground-glass nodules(SM-GGNs).3 At present,neither auxiliary tests that could assist in differential diagnosis nor recommended strategy for the identification and treatment of GGNs exist in the clinical practice guidelines for lung cancer,although clinical evidence suggests that SM-GGNs are more complicated,making treatment decisions difficult.

关键词： lung diagnosis glass

Formation of novel TRIP-ductilized bulk metallic glass composites by manipulating nucleation kinetics via minor alloying

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Rare Metals 2023年第7期42卷 2182-2188页

作者： Xi-Lai Jiang Wen-Li Song Ming Yang Yuan-Bo Zhou Yan Huang Zhi-Chao Lu Yi-Bo Zhang Jie Dong Liang Wang Bo Peng Chun-Ming Hu Jin-Kui Zhao Sheng-Zhong Kou Dong Ma School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou730050China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing100049China Spallation Neutron Source Science Center Dongguan523803China Neutron Science Platform Songshan Lake Materials LaboratoryDongguan523808China State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing100083China Institute of Physics Chinese Academy of Sciences(CAS)Beijing100190China

A series of conical bulk metallic glass composites(BMGCs)with compositions of Zr_(47)Cu_(47-x)Al_(5)Ag_(1)Ga_(x)(x=0,1,2,4;at%)were synthesized using the minor alloying method to investigate the effect of Ga addition ... 详细信息

关键词： alloying properties glass

Enhancement of dual-broadband NIR emissions in Ag NPs embedded tellurite glass doped with Er^(3+)/Tm^(3+)/Ho^(3+) ions

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Optoelectronics Letters 2022年第11期18卷 683-686页

作者： LI Chengyan DING Jiale XIA Lizhang ZHANG Yu ZHOU Yaxun College of Information Science and Engineering Ningbo UniversityNingbo 315211China

Tellurite glasses combined with metal silver nanoparticles(Ag NPs) and Er^(3+)/Tm^(3+)/Ho^(3+) ions were synthesized using melting and quenching technique, and the enhanced two-band near-infrared(NIR) fluorescence induced by Ag NPs was reported. Upon the excitation of 808 nm laser diode(LD), dual-broadband and flat NIR fluorescence ranging from 1 350 nm to 1 600 nm and from 1 600 nm to 2 200 nm with full width at half maximum(FWHM) of 154 nm and 374 nm respectively in Ag NPs embedded tellurite glass doped with appropriate concentrations of Er^(3+)/Tm^(3+)/Ho^(3+) ions has an obvious enhancement of about 40% with respect to the glass sample without Ag NPs, which is attributed to the local field effect caused by Ag NPs and energy transfer from Ag species to rare-earth ions. The enhanced dual-broadband and flat NIR fluorescence enables us to develop various NIR band photonic devices flexibly.

关键词： tellurite glass dual

SU-8 cantilever with integrated pyrolyzed glass-like carbon piezoresistor

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Microsystems & Nanoengineering 2022年第1期8卷 269-280页

作者： Jongmoon Jang Giulia Panusa Giovanni Boero Juergen Brugger Microsystems Laboratory École Polytechnique Fédérale de Lausanne(EPFL)1015 LausanneSwitzerland Department of Functional Ceramics Korea Institute of Materials Science(KIMS)51508 ChangwonRepublic of Korea Optics Laboratory École Polytechnique Fédérale de Lausanne(EPFL)1015 LausanneSwitzerland

glass-like carbon(GC)is a nongraphitizing material composed entirely of carbon atoms produced from selected organic polymer resins by controlled pyrolysis in an inert atmosphere.The GC properties are a combination of the properties of glass,ceramic,and graphite,including hardness,low density,low thermal conductivity,high chemical inertness,biocompatibility,high electrical conductivity,and microfabrication process compatibility.Despite these unique properties,the application of GC in mechanical sensors has not been explored thus far.Here,we investigate the electrical,structural,and chemical properties of GC thin films derived from epoxy-based negative photoresist SU-8 pyrolyzed from 700 to 900°C.In addition,we fabricated microGC piezoresistors pyrolyzed at 700 and 900°C and integrated them into nonpyrolyzed SU-8 cantilevers to create microelectromechanical systems(MEMS)mechanical sensors.The sensitivities of the GC sensor to strain,force,surface stress,and acceleration are characterized to demonstrate their potential and limits for electromechanical microdevices.

关键词： cantilever glass carbon

Controlled formation of gold nanoparticles with tunable plasmonic properties in tellurite glass

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Light(Science & Applications) 2023年第12期12卷 2788-2801页

作者： Yunle Wei Jiangbo Zhao Sindy Fuhrmann Roman Sajzew Lothar Wondraczek Heike Ebendorff-Heidepriem Institute for Photonics and Advanced Sensing School of PhysicsChemistry and Earth SciencesThe University of AdelaideAdelaideSA 5005Australia School of Engineering University of HullHull HU67RXUK Institute of glass Science and Technology TU Bergakademie Freiberg09599 FreibergGermany Otto Schott Institute of Materials Research University of Jena07743 JenaGermany Leibniz Institute of Photonic Technology 07745 JenaGermany Center of Energy and Environmental Chemistry University of Jena07743 JenaGermany

Silicate glasses with metallic nanoparticles(NPs)have been of intense interest in art,science and technology as the plasmonic properties of these NPs equip glass with light modulation capability.The so-called striking technique has enabled precise control of the in situ formation of metallic NPs in silicate glasses for applications from coloured glasses to photonic devices.Since tellurite glasses exhibit the unique combination of comparably easy fabrication,low phonon energy,wide transmission window and high solubility of luminescent rare earth ions,there has been a significant amount of work over the past two decades to adapt the striking technique to form gold or silver NPs in tellurite glasses.Despite this effort,the striking technique has remained insufficient for tellurite glasses to form metal NPs suitable for photonic applications.Here,we first uncover the challenges of the traditional striking technique to create gold NPs in tellurite glass.Then,we demonstrate precise control of the size and concentration of gold NPs in tellurite glass by developing new approaches to both steps of the striking technique:a controlled gold crucible corrosion technique to incorporate gold ions in tellurite glass and a glass powder reheating technique to subsequently transform the gold ions to gold NPs.Using the Mie theory,the size,size distribution and concentration of the gold NPs formed in tellurite glass are determined from the plasmonic properties of the NPs.This fundamental research provides guidance for designing and manipulating the plasmonic properties in tellurite glass for photonics research and applications.

关键词： tunable glasses glass