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5th International Conference on Smart Systems and Inventive technology, ICSSIT 2023

作者： Yalung, Christofer Tantraviwat, Doldet Uatrongjit, Sermsak Yamwong, Wittawat Doctor of Philosophy Program in Nanoscience and Nanotechnology International Program/Interdisciplinary Center of Excellence in Materials Science and Technology Faculty of Science Chiang Mai University Chiang Mai Thailand Chiang Mai University Faculty of Engineering Department of Electrical Engineering Chiang Mai Thailand Chachoengsao Thailand

ISBN: (纸本)9781665474672

Carbon nanotube field effect transistor (CNFET) performance is primarily influenced by a variety of characteristics, such as nanotube diameter, operating voltage, pitch, the number of tubes, dielectric constant, and contact materials. In this study, the dielectric constant and the number of carbon nanotubes (CNTs) were emphasized to analyze the propagation delay and average power dissipation of basic logic gates. Zirconium dioxide (ZrO2), hafnium oxide (HfO2), and silicon dioxide (SiO2) were used as dielectric materials. In this experiment, the Stanford CNFET model was utilized, and variable factors such as the number of CNTs and the dielectric constant (Kox) accumulated on the nanotube gate's surface were diversified. The correlation coefficients of the delay, the average power, and the CNT numbers were also presented. Furthermore, the multi-objective genetic algorithm and the Rmethod were utilized to find the optimal Kox and the number of CNTs for minimizing the average dissipation power and the propagation delay of some logic gates designed with CNFET. For all the gates considered, the optimal number of CNTs is 4 while the dielectric constant is within the ranges of 19 to 24. © 2023 IEEE.

关键词： Carbon nanotubes

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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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Impact of High-k Materials and Tube Numbers on CNFET Gate’s Performances

Impact of High-k Materials and Tube Numbers on CNFET Gate’s...

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International Conference on Smart Systems and Inventive technology (ICSSIT)

作者： Christofer Yalung Doldet Tantraviwat Sermsak Uatrongjit Wittawat Yamwong Philosophy Program in Nanoscience and Nanotechnology (International Program/Interdisciplinary) Chiang Mai University Chiang Mai Thailand Department of Electrical Engineering Faculty of Engineering Chiang Mai University Chiang Mai Thailand Thai Microelectronics Center (TMEC) National Electronics and Computer Technology Center (NECTEC) Chachoengsao Thailand

Carbon nanotube field effect transistor (CNFET) performance is primarily influenced by a variety of characteristics, such as nanotube diameter, operating voltage, pitch, the number of tubes, dielectric constant, and contact materials. In this study, the dielectric constant and the number of carbon nanotubes (CNTs) were emphasized to analyze the propagation delay and average power dissipation of basic logic gates. Zirconium dioxide (ZrO 2 ), hafnium oxide (HfO 2 ), and silicon dioxide (SiO 2 ) were used as dielectric materials. In this experiment, the Stanford CNFET model was utilized, and variable factors such as the number of CNTs and the dielectric constant $(K_{ox})$ accumulated on the nanotube gate's surface were diversified. The correlation coefficients of the delay, the average power, and the CNT numbers were also presented. Furthermore, the multi-objective genetic algorithm and the Rmethod were utilized to find the optimal K ox and the number of CNTs for minimizing the average dissipation power and the propagation delay of some logic gates designed with CNFET. For all the gates considered, the optimal number of CNTs is 4 while the dielectric constant is within the ranges of 19 to 24.

关键词： Silicon compounds Dielectric constant Correlation Logic gates CNTFETs Power dissipation Electron tubes

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Correction: Comparative study on formic acid sensing properties of flame-made Zn2SnO4 nanoparticles and its parent metal oxides

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Physical Chemistry Chemical Physics 2023年第27期25卷 18497-18498页

作者： Matawee Punginsang Kanittha Inyawilert Mameaseng Siriwalai Anurat Wisitsoraat Adisorn Tuantranont Chaikarn Liewhiran Department of Physics and Materials Science Faculty of Science Chiang Mai University Chiang Mai 50200 Thailand PhD Program in Nanoscience and Nanotechnology (International Program/Interdisciplinary) Faculty of Science Chiang Mai University Chiang Mai Thailand Graduate School Chiang Mai University Chiang Mai Thailand Center of Excellence in Materials Science and Technology Chiang Mai University Chiang Mai 50200 Thailand National Security and Dual-Use Technology Center National Science and Technology Development Agency (NSTDA) Klong Luang Phathum Thani 12120 Thailand

Correction for ‘Comparative study on formic acid sensing properties of flame-made Zn2SnO4 nanoparticles and its parent metal oxides’ by Matawee Punginsang et al., Phys. Chem. Chem. Phys., 2023, 25, 15407–15421, htt...

Correction for ‘Comparative study on formic acid sensing properties of flame-made Zn₂SnO₄ nanoparticles and its parent metal oxides’ by Matawee Punginsang et al., Phys. Chem. Chem. Phys., 2023, 25, 15407–15421, https://***/10.1039/D3CP00845B.

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Titanium dioxide/nitrogen-doped graphene-biopolymer based nanocomposite films for pollutant photodegradation and laser desorption ionization mass spectrometry of biomarkers

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Nano-Structures and Nano-Objects 2024年 38卷

作者： Siripongpreda, Tatiya Jiraborvornpongsa, Noppakhate Composto, Russell J. Rodthongkum, Naddudda Nanoscience and Technology Interdisciplinary Program Chulalongkorn University Phayathai Road Wangmai Patumwan Bangkok 10330 Thailand Metallurgy and Materials Science Research Institute Chulalongkorn University Phayathai Road Wangmai Patumwan Bangkok 10330 Thailand Photocatalysts for Clean Environment and Energy Research Unit Faculty of Science Chulalongkorn University Phayathai Road Wangmai Patumwan Bangkok 10330 Thailand Department of Materials Science and Engineering University of Pennsylvania Philadelphia 19104 PA United States Center of Excellence in Responsive Wearable Materials Chulalongkorn University Soi Chula 12 Phayathai Road Pathumwan Bangkok 10330 Thailand

Titanium dioxide (TiO2)/nitrogen-doped graphene (NG) nanocomposite is prepared via a solvent-free hydrothermal reaction. The resulting TiO2/NG materials exhibit a reduction of the band gap energy compared to pristine ... 详细信息

Titanium dioxide (TiO₂)/nitrogen-doped graphene (NG) nanocomposite is prepared via a solvent-free hydrothermal reaction. The resulting TiO₂/NG materials exhibit a reduction of the band gap energy compared to pristine TiO₂ from 3.27 eV to 2.69 eV. These materials are characterized by scanning transmission electron microscopy (STEM), energy dispersive X-ray spectroscopy (EDX), and X-ray photoelectron spectroscopy (XPS). To prepare biopolymer films with photocatalytic properties, TiO₂ and NG are mixed with biodegradable chitosan and spin-coated on a silicon wafer. Film roughness and thickness are evaluated by atomic force microscopy (AFM). These films are then tested for ciprofloxacin photodegradation by irradiating with visible light. In comparison to the TiO₂/chitosan films, the addition of NG substantially enhances photodegradation efficiency by up to 34 % upon the addition of 5 % w/w of NG. Furthermore, this film is shown to be a good substrate for biomarker detection using laser desorption ionization mass spectrometry (LDI-MS). In summary, this nanocomposite-biopolymer film provides good photocatalytic activity towards ciprofloxacin degradation and enhances the ionization efficiency of peptide biomarkers in LDI-MS owing to high efficiency of laser absorption/desorption. This nanocomposite film might be useful for environmental-related and medical application. © 2024 Elsevier B.V.

关键词： LDI-MS Nanocomposite film Nitrogen-doped graphene Photodegradation Titanium dioxide

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Correction: Fabrication and Characterization of Carbon Nanotubes-Based Pressure Nanosensors: A Study on Piezoresistive Behavior

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Transactions on Electrical and Electronic Materials 2024年第1期25卷 121-121页

作者： Khan, Faiza Mubashir, Talha Ahmed, Kainat Mateen, Abdul Lee, Soonil Ahmed, Tauseef Department of Nanoscience and Technology Preston Institute of Nanoscience and Technology PINSAT Islamabad Pakistan Department of Applied Ecology and Biotechnology Inland Norway University of Applied Sciences Hamar Norway Interdisciplinary Program in Senior Human Ecology Changwon National University Gyeongnam Republic of Korea Department of Mineral Processing Engineering Pak-Austria Fachhochschule Institute of Applied Sciences & Technology Haripur Pakistan School of Materials Science and Engineering Changwon National University Gyeongnam Republic of Korea Department of Materials Science & Engineering Institute of Space Technology Islamabad Pakistan

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Correction: Fabrication and Characterization of Carbon Nanotubes-Based Pressure Nanosensors: A Study on Piezoresistive Behavior

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Transactions on Electrical and Electronic Materials 2023年第1期25卷 120-120页

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A critical review on cellulose wastes as the novel substrates for colorimetric and electrochemical sensors

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Current Research in Green and Sustainable Chemistry 2021年 4卷

作者： Siripongpreda, Tatiya Rodthongkum, Nadnudda Ummartyotin, Sarute Nanoscience and Technology Interdisciplinary Program Chulalongkorn University Phayathai Road Wangmai Patumwan Bangkok 10330 Thailand Metallurgy and Materials Science Research Institute Chulalongkorn University Soi Chula 12 Phayathai Road Pathumwan Bangkok 10330 Thailand Department of Materials and Textile Technology Faculty of Science and Technology Thammasat University Patumtani 12120 Thailand Center of Excellence in Responsive Wearable Materials Chulalongkorn University Bangkok 10330 Thailand

Cellulose waste was considered as a natural polymer with good biocompatibility, biodegradability, non-toxicity, which has been extensively employed in sensor research. The advantages of cellulose waste for substrate particularly in terms of portability, sensibility and cost effectiveness provided the high demand of electronic device manufacturing. Utilization of cellulose waste as a substrate in sensor was classified into various sectors such as colorimetric and electrochemical sensors. From the fundamental point of view, cellulose was successfully prepared from either agricultural or municipal waste. It was remarkable to note that purified cellulose can be employed as a platform of disposable substrate. It can be effectively replaced the traditional substrate which is commonly prepared from flat glass sheet. The interest of utilization of cellulose waste was considered as an eco-friendly process. It has given rise to a novel generation of green technology. Herein, an overview of circular economy aspect of cellulose waste, background of cellulose, surface functionalization and development of cellulose-based composite, potential and application of cellulose were therefore presented aiming to significantly provide the meaningful roadmap of cellulose waste for working as a substrate for colorimetric and electrochemical sensors. Then the economic viewpoint will be described. Finally, we purposed the current challenges and future prospects of cellulose based chemical sensors bringing the high value in the near future. © 2021 The Author(s)

关键词： Cellulose waste Circular economy Colorimetric sensor Electrochemical sensor

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Detachable Microneedles With Crosslinked Hyaluronic Acid as Superficial Skin Filler

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Journal of Biomedical Materials Research - Part A 2025年第6期113卷 e37933页

作者： Toprangkobsin, Pattrawadee Teepakakorn, Apasinee Ampawa, Supanan Efendi, Ahmad Limcharoen, Benchaphorn Banlunara, Wijit Asawanonda, Pravit Wanichwecharungruang, Supason Department of Chemistry Faculty of Science and Technology Phra Nakhon Si Ayutthaya Rajabhat University Ayutthaya Thailand Department of Chemistry Faculty of Science Chulalongkorn University Bangkok Thailand Mineed Technology Co. Ltd. Bangkok Thailand Interdisciplinary Program of Nanoscience and Technology Graduate School Chulalongkorn University Bangkok Thailand Department of Anatomy Faculty of Veterinary Science Chulalongkorn University Bangkok Thailand Center of Excellence in Materials and Bio-Interfaces Chulalongkorn University Bangkok Thailand Department of Pathology Faculty of Veterinary Science Chulalongkorn University Bangkok Thailand Department of Medicine Division of Dermatology Faculty of Medicine Chulalongkorn University Bangkok Thailand

Crosslinking gives hyaluronic acid (HA) the ability to resist digestion by hyaluronidase;thus, crosslinked hyaluronic acid (cHA) is currently the most popular soft tissue filler. Clinically trained physicians usually administer cHA to the desired site via injections. Injection into the upper dermis and epidermis layers of the skin is challenging, and cHA with a low level of crosslinking is employed to prevent the uneven look, but it comes with a shorter lifetime. We demonstrate here the synthesis of cHA and its simultaneous fabrication into cHA-detachable microneedles (cHA-DDMNs). The cHA-DDMN patch allowed for the deposition of cHA into the ex vivo porcine skin in 1 min. The non-crosslinked HA placed into the ex vivo porcine skin spread out evenly within 30 min after it was applied. In contrast, the deposited cHA demonstrated prolonged localization in the tissue. Furthermore, we demonstrated the sustained release of curcumin delivered by cHA both in vitro and ex vivo. In rats, the administration of cHA-DDMNs to the skin did not cause skin irritation and led to a significant increase in dermal thickness and collagen deposition. © 2025 Wiley Periodicals LLC.

关键词： Crosslinking

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Antiparasitic potential of asteraceae plants: A comprehensive review on therapeutic and mechanistic aspects for biocompatible drug discovery

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Phytomedicine Plus 2022年第4期2卷 100377-100377页

作者： Kamaraj, Chinnaperumal Ragavendran, Chinnasamy Kumar, Rajappan Chandra Satish Ali, Amir Khan, Safir Ullah Mashwani, Zia ur-Rehman Luna-Arias, Juan Pedro Pedroza, Juan Pedro Ramirez Interdisciplinary Institute of Indian System of Medicine (IIISM) Directorate of Research SRM Institute of Science and Technology (SRMIST) Tamil Nadu Kattankulathur 603203 India Department of Conservative Dentistry and Endodontics Saveetha Dental College and Hospitals Saveetha Institute of Medical and Technical Sciences (SIMATS) Chennai 600077 India Nanoscience and nanotechnology program Center for Research and Advanced Studies National Polytechnic Institute Mexico City Mexico Department of Cell Biology Center for Research and Advanced Studies of the National Polytechnic Institute Av. Instituto Politécnico Nacional 2508 Col. San Pedro Zacatenco Mexico City 16 C.P. 07360 Mexico Department of Botany PMAS Arid Agriculture University Rawalpindi Pakistan

Background: Medicinal herbs are used to cure parasitic protozoan diseases. Protozoan parasites continue difficult to treat, but diverse extracts from both terrestrial and aquatic plants have been shown to provide a variety of medical benefits for people's personal health. One of the main issues in the management of health and disease is the absence of treatment resistance in parasites. It affects millions of people's health globally, poses a threat to get worse, and threatens to cause financial losses. Drug resistance in parasites is progressively complex and challenging the treatment of parasitic disorders, which is disappointing because it does not receive serious consideration from every part of society. Methods: In this regard, our focus has been on examining the antiparasitic plants of the Asteraceae family and their potential use in the management of protozoan parasites. Results: This review is divided into a i) analysis of traditional parasite treatments using Asteraceae plants (ii) an overview of the major chemical classes found in Asteraceae and their effects on parasites;(iii) with special focus on flavonoids, terpenoids, and alkaloids, antiparasitic properties. In-depth information on isolated bioactive compounds that can inhibit protozoan parasites such Plasmodium, Leishmania, Trypanosoma, Entamoeba, and Toxoplasma is provided in this study. It also includes information on Asteraceae plant extracts that have been reported around the globe. Conclusion: These medicinal plants can be further studied to determine whether they have the potential to be turned into novel pharmaceuticals or utilised as a medicinal plant to treat a variety of protozoan diseases. © 2022 The Author(s)

关键词： Asteraceae Compounds Entamoeba Leishmania Natural drugs Parasites Plasmodium Toxoplasma Trypanosoma

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