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Highly Sensitive and Stable Non-Enzymatic Glucose Sensing Based on Nanostructure-Gated Organic Electrochemical Transistors with Self-Ph Calibration

SSRN

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SSRN 2025年

作者： Cheng, Huanyu Meng, Ke Zhu, Jia Zhang, Tianyao Zhang, Xianzhe Zhang, Yingying Chen, Xiangjie Li, Fan Tong, Yao Zhang, Senhao Qiu, Donghai Yang, Hongbo Liu, Shangbin Yin, Lan Zhao, Rui Huang, Libin Li, Tao Gao, Min Pan, Taisong Yang, Jian Lin, Yuan State Key Laboratory of Biotherapy and Cancer Center China School of Material and Energy University of Electronic Science and Technology of China Chengdu610054 China University of Electronics Science and Technology of China Quzhou324000 China Department of Engineering Science and Mechanics The Pennsylvania State University University ParkPA16802 United States Suzhou Institute of Biomedical Engineering and Technology Chinese Academy of Science Suzhou215011 China School of Materials Science and Engineering Tsinghua University Beijing100084 China Department of Gastroenterology West China Hospital Sichuan University Chengdu610041 China Research Center for Industries of the Future Biomedical Engineering Program School of Engineering Westlake University Zhejiang Hangzhou310030 China Medico-Engineering Cooperation on Applied Medicine Research Center University of Electronics Science and Technology of China Chengdu610054 China

Non-invasive, real-time, and continuous monitoring of the trace amount of glucose in near-neutral biofluids is significant for the daily care and treatment of diabetic patients or people with suboptimal health status. Despite improved sensing performance with novel low-dimensional materials or porous structures in various enzymatic and non-enzymatic electrochemical glucose sensors, they still suffer from high cost, poor long-term stability, and performance fluctuations in varied temperature and pH. This work synergistically combines an Au-modified porous laser-induced graphene (LIG) gate electrode with an organic electrochemical transistor (OECT) to create a flexible non-enzymatic glucose sensor. The resulting OECT-based non-enzymatic glucose sensor exhibits significantly enhanced sensitivity in near-neutral biofluids, the limit of detection (LOD) (0.08 μM in pH=7.4), excellent stability over time (degradation of ~10% in 180 days) and against temperature changes (30 °C - 40 °C), self-pH calibration capabilities, and uncompromised sensing performance with shrinking sizes. The highly consistent laser patterning technique and in situ galvanic reduction process for electrode modifications not only provide a simple yet versatile approach to creating low-cost, compact sensing platforms for precise and real-time sweat glucose measurements, but also support scalable production, allowing the correlation study of key biomarkers in sweat and blood. © 2025, The Authors. All rights reserved.

关键词： Coated wire electrodes

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Understanding the Effects of Hematite and Brucite Additions on Fresh- and Hardened-State Properties of Metakaolin-Based Geopolymer Cements

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SSRN 2024年

作者： Ren, Jie Matar, Mohammad G. Tonin, Naiara Rodrigues Pu, Christine White, Claire E. Srubar, Wil V. Department of Civil Environmental and Architectural Engineering University of Colorado Boulder 1111 Engineering Drive ECOT 441 UCB 428 BoulderCO80309 United States Department of Civil and Environmental Engineering Princeton University PrincetonNJ08544 United States Andlinger Center for Energy and the Environment Princeton University PrincetonNJ08544 United States Materials Science and Engineering Program University of Colorado Boulder 4001 Discovery Drive BoulderCO80303 United States College of Civil Engineering

The effects of hematite and brucite additions on fresh- and hardened-state properties of metakaolin-based geopolymer were investigated. Metakaolin-based geopolymer was produced with three Si/Al molar ratios and supplemented with hematite or brucite using three Fe/Al and Mg/Al molar ratios. Rheology, setting time, permeable porosity, compressive strength, and resistance to sulfuric acid of metakaolin-based geopolymer were measured. Experimental results show that, at Si/Al = 1.75 and 2.0, the hematite addition reduced the setting time whereas the brucite addition prolonged setting times, indicating an accelerated and delayed alkali-activation process of metakaolin-based geopolymers, respectively. At Si/Al = 1.5, both additions accelerated the setting time but increased the permeable porosity. Both additions reduced the bulk mechanical properties but improved sulfuric acid resistance. Pastes with brucite exhibited better sulfuric acid resistance than the counterpart with hematite. The paste immediately surrounding the agglomerates of hematite and brucite particles exhibited lower and higher micromechanical properties, respectively. © 2024, The Authors. All rights reserved.

关键词： Hematite

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Isolated Pt atoms tethered to N-doped MoSx as highly efficient and sustainable hydrogen evolution reaction electrocatalyst

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Applied Surface science 2023年 614卷

作者： Lee, Ting-Wei Lo, Ying-Chen Wu, Chia-Hua Ho, Cheng-Yuan Alamani, Bryan G. Chen, Jeng-Lung Chen, Chiaying Department of Environmental Engineering National Chung Hsing University Taichung City402 Taiwan Department of Materials Science and Engineering National Yang Ming Chiao Tung University Hsinchu300 Taiwan Department of Chemical Engineering College of Engineering University of the Philippines Diliman Quezon City1101 Philippines Environmental Engineering Program College of Engineering University of the Philippines Diliman Quezon City1101 Philippines National Synchrotron Radiation Research Center Hsinchu30076 Taiwan

In this work, synergistic NH4+ intercalation and nitrogen-containing molecule doping realize a crystalline-to-amorphous (i.e., MoSx) structure transition with enhanced HER reactivity and superior stability obtained via structural distortion and abundant active sites. The applied N dopants partially replace the bridging S22− and form Mo-N bonds, where the alkyl N-dopant tetramethylammonium chloride (TEA) achieves the most effective doping. The HER activity increases with an increasing number of bridging S22− and MoⅤ species, both of which contribute to advance electrocatalytic performance. Furthermore, N-doped MoSx is identified as an exceptional stabilizing platform to anchor single Pt atoms (PtSA) through Pt-S bonding, rendering MoSx/TEA/PtSA a highly promising electrocatalyst. MoSx/TEA/PtSA achieved comparable performance to that of the benchmark Pt/C catalyst (i.e., a cathodic current density of 10 mA·cm−2 at overpotential of 97 mV) with much lower loading of Pt (0.67 wt%). Theoretical calculations based on density functional theory indicate that Pt atoms and Pt-adjacent sulfur atoms act as active sites. The superior interfacial electron transfer and thus HER performance of MoSx/TEA/PtSA arises from (1) boosted electronic metal-support interaction through Pt-S bonds and (2) enhanced H adsorption ability of Pt-adjacent sulfur atoms due to Pt coordination. © 2022 Elsevier B.V.

关键词： Doping (additives)

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Growth of Gd0.3ca2.7co3.82cu0.18o9-Δ-Bace0.6zr0.2y0.2o3-Δ Bulk Heterojunction Cathode Interlayer by Pulsed Laser Deposition for Enhancing Protonic Solid Oxide Fuel Cell Performance

SSRN

引用

SSRN 2023年

作者： Umer, Muhammad Abdullah Cheng, Cheng-Yang Lai, Bo-Ruei Tseng, Chung-Jen Chen, Szu-Yuan Lee, Sheng-Wei Molecular Science and Technology program Taiwan International Graduate Program Academia Sinica Taipei City106923 Taiwan Department of Physics National Central University Taoyuan City320317 Taiwan Institute of Atomic and Molecular Sciences Academia Sinica Taipei City106923 Taiwan Institute of Materials Science and Engineering National Central University Taoyuan City320317 Taiwan Department of Mechanical Engineering National Central University Taoyuan City320317 Taiwan Department of Chemical and Materials Engineering National Central University Taoyuan City320317 Taiwan

The triple-conducting (e-/H+/O2-) oxides have been extensively studied as the most promising cathode materials for protonic solid oxide fuel cells (P-SOFCs) because of their excellent catalytic activity at lower operating temperatures. However, direct application of these cathode materials by brush-painting or screen-printing provides limited contact area with the underlying electrolyte layer, resulting in high cathode ohmic and polarization resistances. In this study, it is demonstrated that a bulk heterojunction Gd0.3Ca2.7Co3.82Cu0.18O9-δ (GCCCO)-BaCe0.6Zr0.2Y0.2O3-δ (BCZY) layer with a domain width of ~5 nm can be grown by pulsed laser deposition (PLD) via spontaneous phase separation. Such a nanocomposite interlayer between spin-coated BCZY electrolyte and brush-painted GCCCO cathode can effectively increases the interfacial area between the two distinct phases and facilitates proton transport across the interface. This electrode design reduces the ohmic resistance by 0.35 Ω cm2 and the polarization resistance by a factor of three, thus significantly boosting the cell performance. © 2023, The Authors. All rights reserved.

关键词： Pulsed laser deposition

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A drug-eluting balloon catheter coated with chitosan and paclitaxel-loaded poloxamer-stabilized PLA microparticles for the effective treatment of cholangiocarcinoma

引用

Journal of Industrial and engineering Chemistry 2025年

作者： Lee, Jin Sil Jang, Jaehee Oh, Hyeryeon Lee, Eunhye Lee, Don Haeng Son, Panmo Sung, Daekyung Choi, Won Il Center for Bio-Healthcare Materials Bio-Convergence Materials R&D Division Korea Institute of Ceramic Engineering and Technology 202 Osongsaengmyeong 1-ro Osong-eup Heungdeok-gu Chungbuk Cheongju28160 Korea Republic of Daegu41061 Korea Republic of R&D Division NEXTBIOMEDICAL CO. LTD. 6 Venture-ro 100 beon-gil Yeonsu-gu Incheon22013 Korea Republic of School of Integrative Engineering Chung-Ang University Seoul06974 Korea Republic of School of Materials Science and Engineering Gwangju Institute of Science and Technology Cheomdan-gwagiro 123 Buk-gu Gwangju61005 Korea Republic of Division of Gastroenterology Department of Internal Medicine Inha University Hospital Inha University School of Medicine Incheon22332 Korea Republic of Department of Applied Bioengineering of Convergence Science and Technology Seoul National University Seoul08826 Korea Republic of

Liver cancer is one of the most common causes of death, and cholangiocarcinoma (CCA) is the second most common type, usually treated with surgical resection;however, the resectable area is often small, leading to high recurrence. Balloon catheter insertion has been used to alleviate primary CCA symptoms. However, current drug-eluting balloon catheters are unable to provide continuous drug release, resulting in short-term effects and insufficient tumor suppression. Therefore, drug delivery systems and mucoadhesive polymers in drug-eluting balloon catheters have been proposed as alternatives. In this study, we developed paclitaxel (PTX)-loaded, poloxamer-stabilized PLA microparticles (PTX@PPMP) with high drug-loading capacity. We then created a PTX@PPMP-coated balloon catheter using mucoadhesive chitosan (PBCC) through spraying. PTX@PPMP particles were micron sized (1000–1400 nm), exhibited good colloidal stability, and enabled sustained pH-dependent drug release. In CCA cancer cell lines, PPMP did not exhibit significant cytotoxicity, and PTX@PPMP demonstrated an anticancer effect comparable to PTX, even though it had a 16-fold lower efficacy compared to PTX dose. Furthermore, in a xenograft model, the PBCC membrane dose-dependently inhibited the tumor volume without causing acute toxicity. These results indicate that the PBCC, as a novel drug-coated balloon catheter, can improve CCA chemotherapy and have further roles in balloon catheters applications. © 2025 The Korean Society of Industrial and engineering Chemistry

关键词： Chitosan

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Piezoelectric Electrostatic Superlattices in Monolayer MoS2

arXiv

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arXiv 2023年

作者： Ramasubramaniam, Ashwin Naveh, Doron Department of Mechanical and Industrial Engineering University of Massachusetts Amherst AmherstMA01003 United States Materials Science and Engineering Graduate Program University of Massachusetts Amherst AmherstMA01003 United States Faculty of Engineering Bar-Ilan University Ramat Gan52900 Israel Institute for Nanotechnology and Advanced Materials Bar-Ilan University Ramat Gan52900 Israel

Modulation of electronic properties of materials by electric fields is central to the operation of modern semiconductor devices, providing access to complex electronic behaviors and greater freedom in tuning the energy bands of materials. Here, we explore one-dimensional superlattices induced by a confining electrostatic potential in monolayer MoS2, a prototypical two-dimensional semiconductor. Using first-principles calculations, we show that periodic potentials applied to monolayer MoS2 induce electrostatic superlattices in which the response is dominated by structural distortions relative to purely electronic effects. These structural distortions reduce the intrinsic band gap of the monolayer substantially while also polarizing the monolayer through piezoelectric coupling, resulting in spatial separation of charge carriers as well as Stark shifts that produce dispersive minibands. Importantly, these minibands inherit the valley-selective magnetic properties of monolayer MoS2, enabling fine control over spin-valley coupling in MoS2 and similar transition-metal dichalcogenides. Copyright © 2023, The Authors. All rights reserved.

关键词： Monolayers

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Subwavelength-engineered Antislot Photonic Crystals in a Silicon Photonics Foundry for On-chip Communications

Subwavelength-engineered Antislot Photonic Crystals in a Sil...

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CLEO: science and Innovations in CLEO 2024, CLEO: S and I 2024 - Part of Conference on Lasers and Electro-Optics

作者： Arnold, Kellen P. Allen, Joshua A. Halimi, Sami I. Ryder, Landen D. Afzal, Francis O. Bian, Yusheng Aboketaf, Abdelsalam Hirokawa, Takako Dezfulian, Kevin Rakowski, Michal Augur, Rod Nummy, Karen Weiss, Sharon M. Interdisciplinary Materials Science Program Vanderbilt University 2201 West End Ave NashvilleTN37235 United States Department of Electrical and Computer Engineering Vanderbilt University 2201 West End Ave NashvilleTN37235 United States NASA Goddard Space Flight Center Code 561 GreenbeltMD20771 United States GlobalFoundries 400 Stone Break Rd. Ext. MaltaNY12020 United States

We report scalable foundry fabrication and characterization of photonic crystal nanobeam waveguides incorporating subwavelength-scale dielectric antislot unit cells. This work enables enhanced light-matter interaction and three-fold improvement in VπL when incorporated in Mach-Zehnder modulators. © Optica Publishing Group 2024

关键词： Silicon photonics

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Single-peak and narrow-band mid-infrared thermal emitters driven by mirror-coupled plasmonic quasi-BIC metasurfaces

arXiv

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arXiv 2023年

作者： Yang, Sen He, Mingze Hong, Chuchuan Nordlander, Josh Maria, Jon-Paul Caldwell, Joshua D. Ndukaife, Justus C. Department of Electrical and Computer Engineering Vanderbilt University NashvilleTN37235 United States Department of Mechanical Engineering Vanderbilt University NashvilleTN37235 United States Interdisciplinary Materials Science Program Vanderbilt University NashvilleTN37240 United States Department of Materials Science and Engineering The Pennsylvania State University University ParkPA16802 United States Sensorium Technological Labs 6714 Duquaine Ct NashvilleTN37205 United States

Wavelength-selective thermal emitters (WS-EMs) hold considerable appeal due to the scarcity of cost-effective, narrow-band sources in the mid-to-long-wave infrared spectrum. WS-EMs achieved via dielectric materials typically exhibit thermal emission peaks with high quality factors (Q factors), but their optical responses are prone to temperature fluctuations. Metallic EMs, on the other hand, show negligible drifts with temperature changes, but their Q factors usually hover around 10. In this study, we introduce and experimentally verify a novel EM grounded in plasmonic quasi-bound states in the continuum (BICs) within a mirror-coupled system. Our design numerically delivers an ultra-narrowband single peak with a Q factor of approximately 64, and near-unity absorptance that can be freely tuned within an expansive band of more than 10 μm. By introducing air slots symmetrically, the Q factor can be further augmented to around 100. Multipolar analysis and phase diagrams are presented to elucidate the operational principle. Importantly, our infrared spectral measurements affirm the remarkable resilience of our designs’ resonance frequency in the face of temperature fluctuations over 300℃. Additionally, we develop an effective impedance model based on the optical nanoantenna theory to understand how further tuning of the emission properties is achieved through precise engineering of the slot. This research thus heralds the potential of applying plasmonic quasi-BICs in designing ultra-narrowband, temperature-stable thermal emitters in mid-infrared. Moreover, such a concept may be adaptable to other frequency ranges, such as near-infrared, Terahertz, and Gigahertz. Copyright © 2023, The Authors. All rights reserved.

关键词： Mirrors

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Subwavelength-engineered Antislot Photonic Crystals in a Silicon Photonics Foundry for On-chip Communications

Subwavelength-engineered Antislot Photonic Crystals in a Sil...

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2024 Conference on Lasers and Electro-Optics, CLEO 2024

ISBN: (纸本)9781957171395

关键词： Mach-Zehnder interferometers

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Recent advances in wearable electrochemical biosensors towards technological and material aspects

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Biosensors and Bioelectronics: X 2024年 19卷

作者： Hosseinzadeh Fakhr, Mahan Lopez Carrasco, Ivan Belyaev, Dmitry Kang, Jihun Shin, YeHyeon Yeo, Jong-Souk Koh, Won-Gun Ham, Jeongwoo Michaelis, Alexander Opitz, Joerg Beshchasna, Natalia Fraunhofer Institute for Ceramic Technologies and Systems IKTS Maria-Reiche-Straße 2 Dresden01109 Germany Faculty of Mechanical Science and Engineering Dresden University of Technology Dresden Germany School of Integrated Technology College of Computing Yonsei University Seoul Korea Republic of BK21 Graduate Program in Intelligent Semiconductor Technology Yonsei University Seoul Korea Republic of Department of Chemical and Biomolecular Engineering Yonsei University Seoul Korea Republic of

The next generation of wearable biosensors comes with the latest advancements in biosensor technology. Soft and stretchable electrode materials like hydrogels with the similar functionalities of human tissue including stretchability, self-healability, and responsiveness to different stimuli have emerged as the most versatile materials in wearable electronics. The incorporation of conductive nanofillers is found to enhance the sensitivity of the electrochemical biosensors significantly. Microfluidic technology has reduced the volume of samples and reagents required for the analysis, allowing continuous biomedical monitoring from a drop of biofluid. In this paper, the most advanced progress in electrochemical wearable platforms that can noninvasively and continuously monitor the biochemical markers in body fluids for the diagnosis and health management is reviewed. Innovation in microelectronics, modification, fabrication technologies, and detection methods are the main focus of the discussion. In particular, hydrogel-based sensors and microfluidic systems as the latest technology trends in wearable detection are discussed in detail. Integration of miniaturized electrochemical wearable biosensors with wireless technology as a great promise for real-time healthcare monitoring and point-of-care (POC) diagnostics is also summarized. Finally, we outline the most advanced wearable biosensors with optimized material and design as well as key challenges that need to be addressed to improve sensing performance (accuracy, sensitivity, selectivity, stability), portability (miniaturized size and light weight), and flexibility of the wearable biosensors. © 2024 The Authors

关键词： Body fluids

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