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152nd Annual Meeting and Exhibition of The Minerals, Metals and materials Society, TMS 2023

作者： Tavangarian, Fariborz Gray, Jennifer L. Clark, Trevor Gao, Chao Mechanical Engineering Program School of Science Engineering and Technology Pennsylvania State University Harrisburg MiddletownPA17057 United States Materials Research Institute The Pennsylvania State University University Park PA16802 United States Department of Mechanical and Industrial Engineering Norwegian University of Science and Technology Trondheim7034 Norway

ISBN: (纸本)9783031225239

Nature has been a great source of inspiration for engineers and scientists for centuries. It provides unique ideas to overcome the unmet needs of human beings. Spicules are structural elements of Euplectella Aspergillum sponges that reside in the deep ocean. They have an exceptional microstructure that provides excellent mechanical properties. Although spicules are composed of a brittle material, silica (SiO2), they behave differently under load compared to other ceramics. This behavior is due to their concentric cylindrical structure. To produce a similar structure with potential engineering and biomedical applications, one needs to investigate its microstructure in depth. In this study, we examined the microstructure of spicules to understand their architecture as a foundation to better design biomedical implants for tissue engineering applications. © 2023, The Minerals, Metals & materials Society.

关键词： Microstructure

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Scalable Arrays of Pneumatic Sensors for Multitouch Soft Skins

Scalable Arrays of Pneumatic Sensors for Multitouch Soft Ski...

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IEEE International Conference on Soft Robotics (RoboSoft)

作者： Xiaoran Zha Saurabh Jadhav Iman Adibnazari Yichen Zhai Michael T. Tolley Mechanical and Aerospace Engineering Department Materials Science and Engineering Program University of California San Diego San Diego CA USA

Soft robotic systems necessitate accurate and reliable sensor readings to detect environmental interactions and provide precise feedback for control. To be effective, soft sensors must exhibit sensitivity, reliability, repeatability, and flexibility. A versatile approach to sensing for soft robots uses soft air-filled deformable structures with pressure transducers to detect pressure changes due to applied forces. However, the common approach of employing one pressure transducer per sensing chamber limits the scalability of this sensing approach (e.g., for large arrays able to detect touch at many locations). Here we present an approach to the design of pneumatic sensor arrays that reduces the number of required transducers. We develop mathematical models to analyze the pressure variations within the sensor arrays in response to applied forces at various locations. We also introduce a method of rapidly fabricating sensor arrays by laminating elastomeric sheets patterned with laser-cut sacrificial layers. We then use our model to optimize the geometry of the sensors and evaluate the results experimentally. Finally, we devise an algorithm capable of determining the location of multiple touches anywhere within the sensor array. This work represents a step towards the practical application of soft pneumatic sensors, particularly for robotic sensing and haptic devices, enhancing the safety of human-robot interactions.

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Thermal Hall effect in insulating quantum materials

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The Innovation 2022年第5期3卷 3-4页

作者： Shucheng Guo Youming Xu Ran Cheng Jianshi Zhou Xi Chen Department of Electrical and Computer Engineering University of CaliforniaRiversideRiversideCA 92521USA Department of Physics and Astronomy University of CaliforniaRiversideRiversideCA 92521USA Materials Science and Engineering Program Department of Mechanical EngineeringUniversity of Texas at AustinAustinTX 78712USA

The emerging field of quantum materials involves an exciting new class of materials in which charge,spin,orbital,and lattice degrees of freedom are intertwined,exhibiting a plethora of exotic physical *** materials include,but are not limited to,superconductors,topological quantum matter,and systems with frustrated spins,which enable a wide range of potential applications in biomedicine,energy transport and conversion,quantum sensing,and quantum information processing。

关键词： properties. quantum topological

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Goldilocks Energy Minimum: Peptide-Based Reversible Aggregation and Biosensing (Vol 15, Pg 42293, 2023)

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ACS APPLIED materials & INTERFACES 2023年第41期15卷 48838-48838页

作者： Yim, Wonjun Retout, Maurice Chen, Amanda A. Ling, Chuxuan Amer, Lubna Jin, Zhicheng Chang, Yu-Ci Chavez, Saul Barrios, Karen Lam, Benjamin Li, Zhi Zhou, Jiajing Shi, Lingyan Pascal, Tod A. Jokerst, Jesse V. Materials Science and Engineering Program University of California San Diego La Jolla California 92093 United States Department of Nano and Chemical Engineering University of California San Diego La Jolla California 92093 United States Shu Chien-Gene Lay Department of Bioengineering University of California San Diego La Jolla California 92093 United States Department of Radiology University of California San Diego La Jolla California 92093 United States

Colorimetric biosensors based on gold nanoparticle (AuNP) aggregation are often challenged by matrix interference in biofluids, poor specificity, and limited utility with clinical samples. Here, we propose a peptide-driven nanoscale disassembly approach, where AuNP aggregates induced by electrostatic attractions are dissociated in response to proteolytic cleavage. Initially, citrate-coated AuNPs were assembled via a short cationic peptide (RRK) and characterized by experiments and simulations. The dissociation peptides were then used to reversibly dissociate the AuNP aggregates as a function of target protease detection, i.e., main protease (Mpro), a biomarker for severe acute respiratory syndrome coronavirus 2. The dissociation propensity depends on peptide length, hydrophilicity, charge, and ligand architecture. Finally, our dissociation strategy provides a rapid and distinct optical signal through Mpro cleavage with a detection limit of 12.3 nM in saliva. Our dissociation peptide effectively dissociates plasmonic assemblies in diverse matrices including 100% human saliva, urine, plasma, and seawater, as well as other types of plasmonic nanoparticles such as silver. Our peptide-enabled dissociation platform provides a simple, matrix-insensitive, and versatile method for protease sensing.

关键词： colorimetric biosensor DLVO theory reversible aggregation dissociation peptide matrix-insensitive SARS-CoV-19

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Photolithography Patterning of Organic Light-Emitting Diodes Using Solvent Resistant Electron Transport materials

Photolithography Patterning of Organic Light-Emitting Diodes...

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International Symposium, Seminar, and Exhibition, Display Week 2024

作者： Yu, Hyunjin Yeong So, Eun Eun, Kyunghyun Jun Jung, Byung Kim, Myungwoong Lee, Jin-Kyun Yeob Lee, Jun School of Chemical Engineering Sungkyunkwan University 2066 Seobu-ro Jangan-gu Suwon-si Gyeonggi-do16419 Korea Republic of Department of Materials Science and Engineering University of Seoul Seoul02504 Korea Republic of Department of Chemistry and Chemical Engineering Inha University Incheon22212 Korea Republic of Program in Environment and Polymer Engineering Inha University 100 Inha-ro Michuhol-gu Incheon22212 Korea Republic of

In this paper, we develop a novel approach to achieve ultra-high resolution in organic light-emitting diodes (OLEDs) through a photolithography patterning process. It is important to apply a solvent resistant electron transport layer (ETL) in the photolithography pattering of OLED because of solution coating process of photoresist on the ETL. Therefore, a solvent resistant ETL named 2,7-bis(4,6-diphenyl-1,3,5-triazin-2-yl)-9,9′-spirobi[fluorene] (SBF-Trz) was developed and employed as the ETL of OLEDs. The SBF-Trz demonstrated excellent solvent resistance during photolithography process and enabled device performances comparable to those of the conventional OLED without any photolithography process. It was found that the SBF-Trz ETL is appropriate as the ETL of the OLED patterned by photolithography due to good electron transport property, good stability, and good solvent resistance. © 2024, John Wiley and Sons Inc. All rights reserved.

关键词： Reactive ion etching

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Investigation of oxygen-related defect engineering in nonstoichiometric vanadium oxides for electrochromic zinc-ion batteries with superior electrochromic-electrochemical performance

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Chemical engineering Journal 2025年 515卷

作者： Kim, Yonghan kim, Ilgyu Lee, Hye Kang Na, Hyunmin Jung, Ji-Won Yun, Tae Gwang Department of of Molecular Science and Technology Ajou University Gyeonggi Suwon16499 Korea Republic of Department of Materials Science and Engineering Konkuk University Seoul05029 Korea Republic of Advanced Materials Program Department of Materials Science and Engineering Konkuk University Seoul05029 Korea Republic of

Electrochromic-energy storage systems (e-ESS), which visualize the electrochemical charge–discharge process, are experiencing a rapid increase in demand for advanced applications. Electrochromic aqueous zinc-ion batteries (e-AZiBs) systems have emerged as a promising alternative due to their environmental friendliness, enhanced stability, and high volumetric energy density. In this study, we developed a non-stoichiometric vanadium oxide cathode that optimizes both electrochemical and electrochromic performance by controlling the oxygen defect concentration. By optimizing the annealing temperature, we effectively controlled the concentration of oxygen defects, which enhanced Zn2+ diffusion kinetics within the layered structure of V2O5 and promoted more reversible energy storage reactions. In particular, Ec-VO 350 sample, with the most favorable level of oxygen defects, exhibited a specific capacity of 383 mAh/g, representing a 160 % improvement in electrochemical performance compared to pristine V2O5. Additionally, the structural modifications induced by oxygen defects significantly improved electrochemical stability, achieving 98.27 % capacity retention after 500 cycles at 2 A/g, demonstrating excellent reversibility. Meanwhile, although the defect states generated by oxygen vacancies can affect the electronic structure and negatively influence electrochromic properties such as coloration efficiency and ΔT, Ec-VO 350 sample successfully achieved a coloration efficiency of 46.8 cm2/C and a ΔT of 65 %, owing to its enhanced Zn2+ diffusion kinetics despite a reduced optical bandgap. The methodology for developing the non-stoichiometric vanadium oxide cathode presented in this study offers an innovative strategy to enhance the potential for electrochromic energy storage systems (e-ESS) in advanced applications. © 2025

关键词： Virtual storage

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Method for the extraction of circulating nucleic acids based on MOF reveals cell-free RNA signatures in liver cancer

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National science Review 2024年第1期11卷 94-106页

作者： Yuqing Sun Haixin Yu Shaoqing Han Ruoxi Ran Ying Yang Yongling Tang Yuhao Wang Wenhao Zhang Heng Tang Boqiao Fu Boshi Fu Xiaocheng Weng Song-Mei Liu Hexiang Deng Shuang Peng Xiang Zhou College of Chemistry and Molecular Sciences Key Laboratory of Biomedical Polymers-Ministry of Education Wuhan University Department of Digestive Surgical Oncology Union Hospital Tongji Medical College Huazhong University of Science and Technology Cancer Center Union HospitalTongji Medical CollegeHuazhong University of Science and Technology Department of Clinical Laboratory Center for Gene Diagnosis and Program of Clinical Laboratory Zhongnan Hospital of Wuhan University College of Chemistry and Materials Science Hubei Engineering University Department of Pharmacology School of Pharmacy China Medical University Taikang Center for Life and Medical Sciences Wuhan University Department of Hematology Zhongnan Hospital of Wuhan University

Cell-free RNA(cf RNA) allows assessment of health, status, and phenotype of a variety of human organs and is a potential biomarker to non-invasively diagnose numerous diseases. Nevertheless, there is a lack of highly efficient and bias-free cf RNA isolation technologies due to the low abundance and instability of cf ***, we developed a reproducible and high-efficiency isolation technology for different types of cell-free nucleic acids(containing cf RNA and viral RNA) in serum/plasma based on the inclusion of nucleic acids by metal-organic framework(MOF) materials, which greatly improved the isolation efficiency and was able to preserve RNA integrity compared with the most widely used research kit method. Importantly, the quality of cf RNA extracted by the MOF method is about 10-fold that of the kit method, and the MOF method isolates more than three times as many different RNA types as the kit method. The whole transcriptome mapping characteristics of cf RNA in serum from patients with liver cancer was described and a cf RNA signature with six cf RNAs was identified to diagnose liver cancer with high diagnostic efficiency(area under curve = 0.905 in the independent validation cohort) using this MOF method. Thus, this new MOF isolation technique will advance the field of liquid biopsy, with the potential to diagnose liver cancer.

关键词： MOF circulating cell-free RNA biomarker liver cancer diagnosis

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Dynamic Surrogate Optimization of Vertically Stacked Nanosheet FET Based on Gaussian Process Regression

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IEEE Access 2025年 13卷 95730-95738页

作者： Christofer N. Yalung Doldet Tantraviwat Doctor of Philosophy Program in Nanoscience and Nanotechnology (International Program/Interdisciplinary) Materials Science Research Center Faculty of Science Chiang Mai University Chiang Mai Thailand Department of Electrical Engineering Faculty of Engineering Chiang Mai University Chiang Mai Thailand Center of Excellence in Materials Science and Technology Faculty of Science Chiang Mai University Chiang Mai Thailand

While speed improvements are pivotal for advancing modern transistor technologies and ensuring faster computational performance, the tradeoffs with other critical electrical properties, such as threshold voltage ( $V_{T}$ ) and off-current ( $I_{OFF}$ ), are often overlooked. These tradeoffs can significantly impact the overall device performance. The design of vertically stacked n-type and p-type nanosheet FETs (NSFETs) was applied using a dynamic surrogate optimization-gaussian process regression (DSO-GPR) with batch assessment and halting conditions. A vertically stacked silicon-based system is created and refined. Source extension ( $S_{ext}$ ), drain extension ( $D_{ex\mathrm {t}}$ ), gate length ( $L_{g}$ ), nanosheet height (NSh), nanosheet width (NSw), and number of fin (nfin) make up the input variables. In addition to applying normalization to make the weight assignment to the goal functions easier, a penalty component was incorporated to manage the $V_{T}$ . This study demonstrates the effectiveness of the DSO-GPR framework in optimizing NSFET-based inverter designs by balancing speed, $I_{OFF}$ and $V_{T}$ . Among the three evaluated cases, case 1 achieved the fastest propagation delay (1.05 ps) due to higher $I_{ON}$ and lower $V_{T}$ , albeit with increased $I_{OFF}$ and $V_{T}$ mismatch. Case 2 provided a balanced trade-off, significantly reducing $I_{OFF}$ while maintaining a competitive delay of 1.25 ps and achieving $V_{T}$ matching at 0.11 V for both n-type and p-type NSFETs. The optimum parameters for n-type are ${L} _{g}$ = 5 nm, $N_{Sh} = 9$ nm, $N_{Sw} = 42$ nm, $S_{ext} = 3$ nm and $D_{ext} = 4$ nm, nfin = 5; for p-type, $L_{g} = 7$ nm, $N_{Sh} = 10$ nm, $N_{Sw} = 42$ nm, $S_{ext} = 3$ nm and $D_{ext} = 3$ nm, nfin = 5. Case 3 minimized leakage at the cost of delay, highlighting the trade-off between power and performance. These results validate the framework’s adaptability and automation, with performance-based stopping criteria that balance

关键词： Optimization Logic gates Ions Silicon Performance evaluation Linear programming Gaussian processes Field effect transistors Accuracy Machine learning

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Renewable energy application of pulsed laser annealing perovskite quantum dots materials

Renewable energy application of pulsed laser annealing perov...

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Nanoscale and Quantum materials: From Synthesis and Laser Processing to Applications 2025

作者： Lin, Yen-Ting Hsieh, Jui-Ting Tsai, Meng-Lin Yang, Chan-Shan Institute and Undergraduate Program of Electro-Optical Engineering National Taiwan Normal University Taipei Taiwan Department of Materials Science and Engineering National Taiwan University of Science and Technology Taipei Taiwan Micro/Nano Device Inspection and Research Center National Taiwan Normal University Taiwan Applied High Entropy Technology Center National Cheng Kung University Tainan Taiwan

ISBN: (纸本)9781510684522

With the advancement of the global economy and technology, energy demand has become an urgent issue, prompting heightened attention to environmental friendliness and sustainable development. Solar energy, as a significant renewable resource, has garnered widespread attention despite facing challenges in conversion efficiency. Perovskite materials, due to their cubic crystal structure exhibiting excellent optoelectronic properties and a broad spectrum response, along with low manufacturing costs, have emerged as a recent research focus. These materials have shown remarkable potential in solar cells, light-emitting devices, and photodetectors, offering high efficiency, tunable bandgaps, and scalable fabrication processes. This study enhances the optical performance and stability of perovskite quantum dots through femtosecond pulse laser annealing technology, thereby improving their quantum yield. Advanced optical systems are employed for analysis, fully leveraging the advantages of perovskite materials in photovoltaic conversion. This research not only provides foundational solutions to pressing energy challenges but also promotes the transition of society towards cleaner and more sustainable energy technologies. Moreover, it contributes to the advancement of more efficient solar technologies, promoting innovation and development in future energy sources, and effectively reducing dependence on non-renewable energy. This is of significant importance for environmental protection, ensuring a better living environment for the future generations. © 2025 SPIE.

关键词： Nanocrystals

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Design of Mixed-Dimensional QDs/MoS2/TiO2 Heterostructured Resistive Random-Access Memory with Interfacial Analog Switching Characteristics for Potential Neuromorphic Computing

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ACS Applied Electronic materials 2024年第3期6卷 1581-1589页

作者： Tang, Shin-Yi Shih, Yu-Chuan Shen, Ying-Chun Cyu, Ruei-Hong Chen, Chieh-Ting Yang, Tzu-Yi Chaudhary, Mayur Peng, Yu-Ren Kuo, Yao-Ren Miao, Wen-Chien Yu, Yi-Jen Lee, Ling Kuo, Hao-Chung Chueh, Yu-Lun Department of Materials Science and Engineering National Tsing Hua University Hsinchu30013 Taiwan College of Semiconductor Research National Tsing Hua University Hsinchu30013 Taiwan Semiconductor Research Center Hon Hai Research Institute Taipei11492 Taiwan Ph. D. Program in Prospective Functional Materials Industry National Tsing Hua University Hsinchu30013 Taiwan Department of Electrophysics College of Science National Yang Ming Chiao Tung University Hsinchu30010 Taiwan Instrument Center National Tsing Hua University Hsinchu30013 Taiwan Department of Photonics Institute of Electro-Optical Engineering National Yang-Ming Chiao Tung University Hsinchu30010 Taiwan Department of Physics National Sun Yat-Sen University Kaohsiung80424 Taiwan Department of Materials Science and Engineering Korea University Seoul02841 Korea Republic of

Resistive random-access memory (RRAM) is one of the most promising candidates for next-generation nanoscale nonvolatile memory devices and neuromorphic computing applications. In this study, we developed a novel mixed-dimensional design for RRAM devices, incorporating zero-dimensional quantum dots (QDs), two-dimensional MoS2, and a TiO2 switching layer to achieve prominent interfacial switching behaviors. Compared with typical filamentary RRAM devices, the proposed heterostructure featured a light-sensitive QDs/MoS2 layer that allowed for bias-controllable resistive changes during the set and reset processes without abrupt switching. This was endowed by effective electron-hole pair separations upon excitation and the generation of a thin molybdenum oxide (MoOx) layer due to the accumulation of oxygen ions at the interface between MoS2 and TiO2. The ITO/QDs/MoS2/TiO2/Pt RRAM device exhibited an on/off ratio of 10 with improved endurance under 515 nm laser illumination and wavelength-dependent resistive switching behavior, making it useful for multilevel storage. Furthermore, the heterostructured device demonstrated synaptic characteristics with enhanced potentiation and depression nonlinearities and asymmetry factors, revealing its potential for future neuromorphic applications. © 2024 American Chemical Society.

关键词： Titanium dioxide

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