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29th ISSAT International Conference on Reliability and Quality in Design, RQD 2024

作者： Lin, Huizhong Zhu, Mengmeng Department of Textile Engineering Chemistry and Science North Carolina State University RaleighNC United States Operations Research Graduate Program North Carolina State University RaleighNC United States

ISBN: (纸本)9798986576138

The damage resistance cyber-physical system (CPS) has gained growing attention in research communities. Recent studies typically describe a system's resistance to shock damage using a constant factor ranging from 0 to 1, which may not accurately represent the system's true resistance due to operational intricacies. This paper introduces a resistance function employing a logarithmic form to illustrate the system's dynamic resistance to shock damage. Initially, we present the process of modeling this resistance function and examine its statistical characteristics. Subsequently, we expand upon the three types of non-fatal shocks outlined in previous studies, applying them to a multi-phase context and exploring the impact of each type of non-fatal shock across the system's three degradation phases. Using the proposed resistance function, we formulate an explicit solution for a damage resistance multiphase system reliability model. Finally, numerical examples are provided to show that the reliability model developed offers a good depiction of the system's reliability characteristics. © Conference Proceedings of the 29th ISSAT International Conference on Reliability and Quality in Design, RQD 2024.

关键词： Shock problems

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An Anti-Plasma Etching Film of Y2O3 Film 10

An Anti-Plasma Etching Film of Y2O3 Film

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10th International Conference on Applied System Innovation, ICASI 2024

作者： Wei, Chia-Chih Chen, Hsuan-Jung Lee, Yi-Mu Chang, Shao-Fu Chen, Chien-Chon College of Engineering and Science Ph.D. Program in Materials and Chemical Engineering National United University Miaoli Taiwan Michigan State University Department of Chemistry MI48824 United States National United University Department of Electronic Miaoli Taiwan National United University Department of Energy Engineering Miaoli Taiwan

ISBN: (纸本)9798350394924

In this paper, we have presented our experiment results including (a) use a slowly thermal spray process deposition an yttrium oxide (Y2O3) film with thickness of $200\ \mu\mathrm{m}$ on the aluminum alloy (AA6061). The image analysis showed that the porosity of Y2O3 film can be reduced to less than 2%. The further aerosol deposition can be used filling the pores and can reduce the porosity of the film to less than 0.5%. This low-porosity Y2O3 film will be able to meet the increasingly stringent requirements for surface coating protection of semiconductor vacuum chamber. (b) Compared the corrosion characterization in 3.5 wt. % NaCl solution between naked AA6061 and AA6061 with Y2O3 coating, a high corrosion reactivity ($\mathrm{I}_{\text{corr}}=10^{-3.3}\mathrm{A}/\text{cm}^{2}$) of naked AA6061 then AA6061 with Y2O3 coating ($\mathrm{I}_{\text{corr}}=10^{-5.8}\mathrm{A}/\text{cm}^{2}$). The corrosion reactivity of AA6061 with Y2O3 is reduced by 316 times to a naked AA6061. © 2024 IEEE.

关键词： Porosity

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Fused-ring induced end-on orientation in conjugated molecular dyads toward efficient single-component organic solar cells

Aggregate

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Aggregate 2023年第2期4卷 291-299页

作者： Dongdong Xia Shengxi Zhou Wen Liang Tan Safakath Karuthedath Chengyi Xiao Chaowei Zhao Frédéric Laquai Christopher R.McNeill Weiwei Li Institute of Applied Chemistry Jiangxi Academy of SciencesNanchangChina Beijing Advanced Innovation Center for Soft Matter Science and Engineering&State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijingChina Department of Materials Science and Engineering Monash UniversityClaytonAustralia KAUST Solar Center(KSC) Physical Sciences and Engineering Division(PSE)Material Science and Engineering Program(MSE)King Abdullah University of Science and Technology(KAUST)ThuwalSaudi Arabia

The molecular orientations of conjugated materials on the substrate mainly include edge-on,face-on,and ***-on and face-on orientations have been widely observed,while end-on orientation has been rarely *** in organic solar cells(OSCs)charge transport is along the vertical direction,end-on orientation with conjugated backbones perpendicular to the substrate is recognized as the ideal microstructure for *** this work,we for the first time obtained the preferential end-on orientation in a conjugated molecular dyad that contains a conjugated backbone as donor and perylene bisimide side units as *** was realized by introducing a fused-ring structure to replace linear terthiophenes with conjugated backbones,yielding F-MDPBI and L-MDPBI ***,a shifting trend of the molecular orientation from dominating edge-on in L-MDPBI to preferential end-on in F-MDPBI was *** a consequence,vertical charge carrier mobilities in F-MDPBI are one order of magnitude higher than those with preferential edge-on orientation,so single-component OSCs based on this molecular dyad as a single photoactive layer provided a power conversion efficiency of 4.89% compared to 1.70% based on L-MDPBI with preferential edge-on orientation.

关键词： conjugated molecular dyads crystallinity edge-on end-on single-component organic solar cells

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Unconventional assemblies of bisacylhydrazones:The role of water for circularly polarized luminescence

Aggregate

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Aggregate 2022年第5期3卷 185-193页

作者： Hye Jin Cho Dong Yeun Jeong Hwihyun Moon Taewoo Kim You Kyoung Chung Yeongdong Lee Zonghoon Lee Joonsuk Huh Youngmin You Changsik Song Department of Chemistry Sungkyunkwan UniversitySuwonGyeonggi 16419Republic of Korea Division of Chemical Engineering and Materials Science Graduate Program in System Health Science and EngineeringEwha Womans UniversitySeoul 03760Republic of Korea Center for Multidimensional Carbon Materials Institute for Basic Science(IBS)Department of Materials Science and EngineeringUlsan National Institute of Science and Technology(UNIST)Ulsan 44919Republic of Korea

Understanding the precise molecular arrangement of chiral supramolecular polymers is essential not only to comprehend complex superstructures like proteins and DNA but also for the development of next-generation optoelectronic materials,including materials displaying high-performance circularly polarized luminescence(CPL).Herein,we report the first chiral supramolecular polymer systems based on hydrazone–pyridinium conjugates comprising alkyl chains of different lengths,which afforded control of the apparent supramolecular *** supramolecular chirality is governed basically by the remote chiral centers of alkyl chains,helicity inversion was achieved by controlling the conditions under which the hydrazone building blocks underwent aggregation(i.e.,solvent compositions or temperature).More importantly,the addition of water to the system led to aggregationinduced hydrazone deprotonation,which resulted in a completely different selfassembly *** water molecules played an essential role,forming the assembly’s channel-like backbone,around which hydrazone molecules gathered as a result of hydrogen bonding *** co-assembly of an achiral hydrazone luminophore with the given supramolecular polymer system allowed the fabrication of a novel CPL-active hydrazone-based material exhibiting a high maximum value for the photoluminescence dissymmetry factor of -2.6×10^(-2).

关键词： circularly polarized luminescence(CPL) helicity control hydrazone self-assembly structural water supramolecular polymerization

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Cobalt protoporphyrin-induced nano-self-assembly for CT imaging,magnetic-guidance,and antioxidative protection of stem cells in pulmonary fibrosis treatment

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Bioactive Materials 2023年第3期21卷 129-141页

作者： Yimeng Shu Ming Ma Xiaoxia Pan Muhammad Shafiq Huizhu Yu Hangrong Chen State Key Laboratory of High Performance Ceramics and Superfine Microstructures Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai200050PR China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing100049PR China School of Chemistry and Materials Science Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of Sciences1 Sub-laneXiangshanHangzhou310024PR China State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai200438PR China Department of Biotechnology Faculty of Science and TechnologyUniversity of Central Punjab(UCP)Lahore54000Pakistan

Mesenchymal stem cells(MSCs)transplantation is a promising approach for pulmonary fibrosis(PF),however it is impeded by several persistent challenges,including the lack of long-term tracking,low retention,and poor survival of MSCs,as well as the low labeling efficiency of ***,a cobalt protoporphyrin IX(CoPP)aggregation-induced strategy is applied to develop a multifunctional nano-self-assembly(ASCP)by combining gold nanoparticle(AuNPs),superparamagnetic iron oxide nanoparticles(SPIONs),and CoPP through a facile solvent evaporation-driven *** no additional carrier materials are employed during the synthesis,high loading efficiency of active ingredients and excellent biocompatibility are ***,facile modification of the ASCPs with bicyclo[6.1.0]nonyne(BCN)groups(named as ASCP-BCN)enables them to effectively label MSCs through bioorthogonal *** obtained ASCP-BCN could not only help to track MSCs with AuNP-based computed tomography(CT)imaging,but also achieve an SPIONs-assisted magnetic field based improvement in the MSCs retention in lungs as well as promoted the survival of MSCs via the sustained release of *** in vivo results demonstrated that the labeled MSCs improved the lung functions and alle-viated the fibrosis symptoms in a bleomycin–induced PF mouse ***,a novel ASCP-BCN multi-functional nanoagent was developed to bioorthogonally-label MSCs with a high efficiency,presenting a promising potential in the high-efficient MSC therapy for PF.

关键词： Self-assembly Pulmonary fibrosis Cell labeling Stem cell therapy Theranostic

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Advances in plastic waste-derived carbon nanomaterial for supercapacitor applications: Trends, challenges and prospective

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Materials Today: Proceedings 2022年 67卷 1024-1032页

作者： Kumar Nayak, Samit Saurabh, S.M. Kar, Abhijeet Bhusan Sahoo, Bibhuti Kumar Sahoo, Naresh Kumar Sahoo, Prasanta Department of Mechanical Engineering Siksha ‘O’ Anusandhan Deemed to be University Bhubneswar 751030 India Department of Chemistry Environmental Science and Technology Program Siksha ‘O’ Anusandhan Deemed to be University Odisha Bhubaneswar 751030 India

Plastic is one of the most serious environmental threats. Plastic is a non-biodegradable substance that releases various hazardous compounds that cause cancer and other serious illnesses, as well as endangering aquatic life and polluting the environment. The use of waste plastic in the production of a variety of nanomaterials can protect people and the surroundings from the dangers of plastic waste, while simultaneously producing useful compounds for other applications. This critical review summarizes the current plastic waste circumstances investigation of the worldwide energy crisis, as well as a recent development in the structural forms and presents a situational investigation of common plastic waste into valuable carbon-based nanomaterials (CNMs) like carbon quantum dots, carbon nanoparticles, Carbon nanotube (CNT), graphene, and 3D porous carbon, which can be used as supercapacitor electrode materials. The impact of various structural alterations on CNMs on the charge storage mechanism has been widely addressed for the manufacture of high-performance electrode materials for supercapacitors, and their future potential. We think that our review reveals a promising long-term strategy for using plastic waste for supercapacitor electrode applications, as well as a new way for humanity's future energy and waste management challenges. © 2022

关键词： Supercapacitor

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Clusteroluminescence:A gauge of molecular interaction

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Chinese Chemical Letters 2023年第5期34卷 165-173页

作者： Bin Liu Bo Chu Lixun Zhu Haoke Zhang Wang-Zhang Yuan Zheng Zhao Wen-Ming Wan Xing-Hong Zhang School of Energy and Power Engineering North University of ChinaTaiyuan 030051China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesShanghai Key Lab of Electrical Insulation and Thermal AgingShanghai Electrochemical Energy Devices Research CenterShanghai Jiao Tong UniversityShanghai 200240China School of Science and Engineering The Chinese University of Hong KongShenzhen 518172China State Key Laboratory of Structural Chemistry Key Laboratory of Coal to Ethylene Glycol and Its Related TechnologyCenter for Excellence in Molecular SynthesisFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China

Clusteroluminescence(CL)materials,as an emerging class of luminescent materials with unique photophysical properties,have received increasing attention owing to their great theoretical significance and potential for biological *** much progress has been made in the design,synthesis and application of CL materials,there is still a big challenge in the emission *** far,throughspace interaction has been proposed as the preliminary mechanism of the corresponding clusterizationtriggered emission(CTE)effect,but a systematic theory is still *** review summarizes the current mechanistic understanding of CL materials including organic/inorganic small molecules,and polymers with/without isolated aromatic *** addition,some strategies to achieve high quantum yield,adjustable emission color,and persistent room temperature phosphorescence in CL materials are also *** last,a perspective of the mechanism and application of CL materials are demonstrated,which inspire the researchers working on the development of new kinds of functional materials.

关键词： Clusteroluminescence Clusterization-triggered emission Through-space interaction Non-conjugated structure

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Sonication labile PEG-based hydrogel system for biological component suspension and subsequent degradation

RSC Applied Polymers

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RSC Applied Polymers 2024年第6期2卷 1147-1156页

作者： Arguien, Meagan N. Kamps, Joshua T. Muth, Sarah A. Trujillo-Lemon, Marianela Bowman, Christopher N. Materials Science & Engineering Program University of Colorado Boulder 80309 CO United States Department of Chemistry University of Colorado Boulder 80309 CO United States Department of Molecular Cellular & Developmental Biology University of Colorado Boulder 80309 CO United States Department of Chemical and Biological Engineering University of Colorado Boulder 80309 CO United States

This work synthesizes poly(ethylene glycol) (PEG) macromers that incorporate a phthalaldehyde moiety located at crosslink junctions. This location facilitates the severing of the polymer network when bond scission of the phthalaldehyde unit occurs with mechanical stimulation. As these networks degrade, the mechanical properties are analyzed to better understand how sonication driven degradation affects a polymer network - specifically looking at the degradation profile in hydrogel systems through the mass loss and storage modulus profiles. Comparison of hydrogels containing phthalaldehyde units with hydrogels that do not have the mechanophore pre- and post-mechanical stimulation provides evidence that the incorporation of the mechanophore at these crosslink junctions reduces the storage modulus by a factor of ten and results in greater than 90% decrease of the gel mass after 15 minutes of probe sonication, leading to breaking the network into soluble daughter fragments. The network degradation conditions of these hydrogels are shown to be compatible with biological component suspension and release for applications such as localized payload release. © 2024 RSC.

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Investigation of some thermomechanical processing effects on the structure and properties of a TiNiCu shape memory alloy

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Materials Today: Proceedings 2023年 72卷 600-606页

作者： Popa, Mihai Daniel Apostol, Victor Monica Lohan, Nicoleta Cimpoesu, Nicanor Cazacu, Maria Borza, Firuta Bujoreanu, Leandru-Gheorghe Faculty of Materials Science and Engineering "Gheorghe Asachi" Technical University of Iasi Blvd. Dimitrie Mangeron 71A Iasi 700050 Romania Department of Inorganic Chemistry "Petru Poni" Institute of Macromolecular Chemistry Aleea Gr. Ghica Voda 41A Iasi 700487 Romania National Institute of Research and Development for Technical Physics Blvd. Dimitrie Mangeron 47 Iasi 700050 Romania

A Ti50Ni45Cu5 shape memory alloy (SMA) was cast, homogenized and hot rolled into 0.5 mm-thick lamellas. After homogenization, the intercrystalline Ti2(Ni, Cu) based solid solution, gradually decomposed with the increase of hold temperature and time, as pointed out by optical, scanning electron and atomic force microscopy. After hot rolling, by wire spark erosion, rectangular specimens with the dimensions 0.5 mm × 2 mm × 6 mm were cut each one with a mass of 0.44 g. Since the specimens experienced a thermoelastic martensitic transformation, while being martensitic at room temperature (RT) they were soft and could be easily bent against cylindrical calibers, in order to induce their "cold" (martensitic) shape. When heated, up to 100 °C with a hot air gun, they readily recovered, by shape memory effect (SME) their initial straight form, also known as "hot shape". Thermomechanical training cycles were subsequently applied, consisting in: (i) RT bending;(ii) hot air gun heating and (iii) air cooling. These cycles were repeated up to 50 times. The effects of the thermomechanical training cycles were subsequently analyzed, by differential scanning calorimetry, on fragments cut from the active sections of the specimens. It was noticed that training basically increased thermal hysteresis. Finally, experiments were performed which demonstrated the capacity of Ti50Ni45Cu5 SMA elements to develop. © 2022

关键词： Hot rolling

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21-Component compositionally complex ceramics: Discovery of ultrahigh-entropy weberite and fergusonite phases and a pyrochlore–weberite transition

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Journal of Advanced Ceramics 2022年第4期11卷 641-655页

作者： Mingde QIN Heidy VEGA Dawei ZHANG Sarath ADAPA Andrew J.WRIGHT Renkun CHEN Jian LUO Department of Nano Engineering University of California San DiegoLa Jolla 92093USA Department of Chemistry and Biochemistry University of California San DiegoLa Jolla 92093USA Program of Materials Science and Engineering University of California San DiegoLa Jolla 92093USA Department of Mechanical and Aerospace Engineering University of California San DiegoLa Jolla 92093USA

Two new high-entropy ceramics(HECs)in the weberite and fergusonite structures,along with the unexpected formation of ordered pyrochlore phases with ultrahigh-entropy compositions and an abrupt pyrochlore–weberite transition,are discovered in a 21-component oxide *** the Gibbs phase rule allows 21 equilibrium phases,9 out of the 13 compositions examined possess single HEC phases(with ultrahigh ideal configurational entropies:~2.7kB per cation or higher on one sublattice in most cases).Notably,(15RE_(1/15))(Nb_(1/2)Ta_(1/2))O_(4) possess a single monoclinic fergusonite(C2/c)phase,and(15RE_(1/15))_(3)(Nb_(1/2)Ta_(1/2))_(1)O_(7) form a single orthorhombic(C222_(1))weberite phase,where 15RE_(1/15) represents Sc_(1/15)Y_(1/15)La_(1/15)Pr_(1/15)Nd_(1/15)Sm_(1/15)Eu_(1/15)Gd_(1/15)Tb_(1/15)Dy_(1/15)Ho_(1/15)Er_(1/15)Tm_(1/15) Yb_(1/15)Lu_(1/15).Moreover,a series of eight(15RE_(1/15))_(2+x)(Ti_(1/4)Zr_(1/4)Ce_(1/4)Hf_(1/4))_(2−2x)(Nb_(1/2)Ta_(1/2))_(x)O_(7) specimens all exhibit single phases,where a pyrochlore–weberite transition occurs within 0.75

关键词： compositionally complex ceramics high-entropy ceramics(HECs) weberite pyrochlore fergusonite ultrahigh-entropy ceramics many-component ceramics

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