Micro and Nano Systems Letters最新文献_第4页

Possibility of large-area carbon nanotube films formation through spray coating 通过喷涂形成大面积碳纳米管薄膜的可能性

IF 3.6

Micro and Nano Systems Letters Pub Date : 2024-03-04 DOI: 10.1186/s40486-023-00193-8

Jinkyeong Kim, TaeGu Lee, Ji-Hoon Han, Joon Hyub Kim

引用次数: 0

Exploring graphene structure, material properties, and electrochemical characteristics through laser-induced temperature analysis 通过激光诱导温度分析探索石墨烯结构、材料特性和电化学特征

IF 3.6

Micro and Nano Systems Letters Pub Date : 2024-02-27 DOI: 10.1186/s40486-024-00198-x

Na-Kyoung Yang, Yoo-Kyum Shin, Saeyoung Park, Sang-Min Kim, Bon-Jae Koo, Joonsoo Jeong, Min-Ho Seo

{"title":"Exploring graphene structure, material properties, and electrochemical characteristics through laser-induced temperature analysis","authors":"Na-Kyoung Yang, Yoo-Kyum Shin, Saeyoung Park, Sang-Min Kim, Bon-Jae Koo, Joonsoo Jeong, Min-Ho Seo","doi":"10.1186/s40486-024-00198-x","DOIUrl":"10.1186/s40486-024-00198-x","url":null,"abstract":"<div><p>Laser-induced graphene (LIG) is a three-dimensional graphene structure fabricated through the irradiation of a polymer substrate with laser energy (or fluence, equivalently). This methodology offers a cost-effective and facile means of producing 3D nanostructures, yielding graphene materials characterized by extremely high surface area and superior electrical properties, rendering them advantageous for various electrochemical applications. Nonetheless, it is imperative to acknowledge that the structures and material properties of LIG are subject to substantial variations contingent upon processing parameters, thereby underscoring the necessity for systematic inquiry and systematic comprehension of processing conditions, such as fluence and multi-passing, and resultant outcomes. Herein, we explored the impact of different laser fluence levels on the structural and material properties of LIG. We, especially, focused on how laser fluence affected substrate temperature and found that it caused polyimide (PI) substrate pyrolysis, resulting in changes in 3D structures and material density to LIG properties. We also investigated the effects of a multi-passing process on 3D LIG structures and material qualities, varying fluences, and temperature fluctuations. Lastly, we assessed electrochemical properties using LIGs produced under different conditions as working electrodes, leading to distinct impedance profiles and cyclic voltammetry (CV) curves. These variations were linked to the unique structural and material characteristics of the LIG samples.</p></div>","PeriodicalId":704,"journal":{"name":"Micro and Nano Systems Letters","volume":"12 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://mnsl-journal.springeropen.com/counter/pdf/10.1186/s40486-024-00198-x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139976342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quasi-statically actuated MEMS scanner with concentric vertical comb electrodes 带同心垂直梳状电极的准静致动 MEMS 扫描仪

IF 3.6

Micro and Nano Systems Letters Pub Date : 2024-01-31 DOI: 10.1186/s40486-023-00188-5

Daehwan Chae, Do-hyeon Jeong, Seong-jong Yun, Kyoung-woo Jo, Jong-Hyun Lee

引用次数: 0

Comprehensive study and scientific process to increase the accuracy in estimating the thermal conductivity of nanofluids containing SWCNTs and CuO nanoparticles using an artificial neural network 利用人工神经网络提高含 SWCNT 和 CuO 纳米颗粒的纳米流体导热系数估算精度的综合研究和科学过程

IF 3.6

Micro and Nano Systems Letters Pub Date : 2024-01-10 DOI: 10.1186/s40486-023-00195-6

Mohammad Hemmat Esfe, Fatemeh Amoozad, Hossein Hatami, Davood Toghraie

{"title":"Comprehensive study and scientific process to increase the accuracy in estimating the thermal conductivity of nanofluids containing SWCNTs and CuO nanoparticles using an artificial neural network","authors":"Mohammad Hemmat Esfe, Fatemeh Amoozad, Hossein Hatami, Davood Toghraie","doi":"10.1186/s40486-023-00195-6","DOIUrl":"10.1186/s40486-023-00195-6","url":null,"abstract":"<div><p>This investigation aimed to evaluate the thermal conductivity ratio (TCR) of SWCNT-CuO/Water nanofluid (NF) using experimental data in the T range of 28–50 ℃ and solid volume fraction range of SVF = 0.03 to 1.15% by an artificial neural network (ANN). MLP network with Lundberg-Marquardt algorithm (LMA) was utilized to predict data (TCR) by ANN. In the best case, from the set of various structures of ANN for this nanofluid, the optimal structure was chosen, which consists of 2 hidden layers, the first layer with the optimal structure consisting of 5 neurons and the second layer containing 7 neurons. Eventually, for the optimal structure, the R<sup>2</sup> coefficient and MSE are 0.9999029 and 6.33377E-06, respectively. Based on all ANN information, MOD is in a limited area of − 3% < MOD < + 3%. Comparison of test, correlation yield, and ANN yield display that ANN evaluates laboratory information more exactly.</p></div>","PeriodicalId":704,"journal":{"name":"Micro and Nano Systems Letters","volume":"12 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://mnsl-journal.springeropen.com/counter/pdf/10.1186/s40486-023-00195-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139419563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on repetitive damage-recovery cycle of hydrophobic coating for electrowetting-on-dielectric (EWOD) applications 电介质上电泳 (EWOD) 应用中疏水涂层的重复损伤恢复周期研究

IF 3.6

Micro and Nano Systems Letters Pub Date : 2024-01-08 DOI: 10.1186/s40486-023-00197-4

Youngdoo Son, Woochan Kim, Daeyoung Lee, Sang Kug Chung

{"title":"Study on repetitive damage-recovery cycle of hydrophobic coating for electrowetting-on-dielectric (EWOD) applications","authors":"Youngdoo Son, Woochan Kim, Daeyoung Lee, Sang Kug Chung","doi":"10.1186/s40486-023-00197-4","DOIUrl":"10.1186/s40486-023-00197-4","url":null,"abstract":"<div><p>This study is focusing on the durability of fluoropolymer hydrophobic coatings against falling droplets. Devices such as smart self-cleaning lens or droplet-based energy generators are open-air electrowetting-on-dielectric (EWOD) devices, which are applications that utilize falling droplets. Therefore, the hydrophobic coatings of these devices are exposed to environment factors such as raindrop, and it is necessary to examine the durability of hydrophobic coatings in similar environments and the effectiveness of recovery. Thus, in this study, we simulate raindrops to damage samples with various thicknesses of Cytop (CTX-809SP2). Subsequently, damaged samples are heated to recover their hydrophobicity, and we repeat this damage-recovery cycle several times to evaluate the long-term durability of hydrophobic coating. The EWOD samples of three different hydrophobic coating thicknesses (0.1 μm, 0.5 μm, and 1.0 μm) are damaged by falling droplets from a certain height for 10 days. The damaged samples are then recovered by heating them on a hot plate at 200 ℃ for 24 h and evaluate their EWOD performance. In addition, the hydrophobic coatings are repeatedly damaged and recovered several times to examine the number of recovery limitations of the coatings. After the second damage-recovery cycle, the thickest hydrophobic coating sample shows 7 % better EWOD performance than others. Additionally, after the third damage-recovery cycle, the EWOD performance of all samples significantly degrade, experimentally verifying the number of recovery limitations of the hydrophobic coating. The results of this study are expected to provide useful information for open-air EWOD devices on the methods for evaluating their durability and the thickness selection of hydrophobic coating.</p></div>","PeriodicalId":704,"journal":{"name":"Micro and Nano Systems Letters","volume":"12 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://mnsl-journal.springeropen.com/counter/pdf/10.1186/s40486-023-00197-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139399853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SnO2 nanostructure-based acetone sensors for breath analysis 基于二氧化锡纳米结构的丙酮呼吸分析传感器

IF 3.6

Micro and Nano Systems Letters Pub Date : 2024-01-04 DOI: 10.1186/s40486-023-00196-5

Arunkumar Shanmugasundaram, Karthikeyan Munirathinam, Dong-Weon Lee

{"title":"SnO2 nanostructure-based acetone sensors for breath analysis","authors":"Arunkumar Shanmugasundaram, Karthikeyan Munirathinam, Dong-Weon Lee","doi":"10.1186/s40486-023-00196-5","DOIUrl":"10.1186/s40486-023-00196-5","url":null,"abstract":"<div><p>The World Health Organization reports that metabolic disorders are responsible for a significant proportion of global mortality. Considering this, breath sensors have gained prominence as effective tools for monitoring and diagnosing metabolic disorders, thanks to recent advancements in science and technology. In human exhaled breath, over 870 distinct volatile organic components (VOCs) have been identified. Among several VOCs, the detection of acetone in exhaled breath has received considerable attention in biomedical applications. Research indicates a strong correlation between high acetone levels in human breath and several diseases, such as asthma, halitosis, lung cancer, and diabetes mellitus. For instance, acetone is particularly noteworthy as a biomarker in diabetes, where its concentration in exhaled breath often surpasses 1.76 parts per million (ppm), compared to less than 0.8 ppm in healthy individuals. Early diagnosis and intervention in diseases associated with elevated acetone levels, aided by such non-invasive techniques, have the potential to markedly reduce both mortality and the financial burden of healthcare. Over time, various nanostructured gas sensing technologies have been developed for detecting acetone in both ambient air and exhaled breath. This article presents a mini review of cutting-edge research on acetone gas sensing, focusing specifically on nanostructured metal oxides. It discusses critical factors influencing the performance of acetone gas sensors, including acetone concentration levels and operational temperature, which affect their sensitivity, selectivity, and response times. The aim of this review is to encourage further advancements in the development of high-performance acetone gas sensors utilizing nanostructured materials, contributing to more effective management of metabolic disorders.</p></div>","PeriodicalId":704,"journal":{"name":"Micro and Nano Systems Letters","volume":"12 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://mnsl-journal.springeropen.com/counter/pdf/10.1186/s40486-023-00196-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139094527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrohydrodynamic (EHD) printing of nanomaterial composite inks and their applications 纳米材料复合油墨的电流体动力（EHD）印刷及其应用

IF 3.6

Micro and Nano Systems Letters Pub Date : 2024-01-03 DOI: 10.1186/s40486-023-00194-7

Rizwan Ul Hassan, Mirkomil Sharipov, WonHyoung Ryu

{"title":"Electrohydrodynamic (EHD) printing of nanomaterial composite inks and their applications","authors":"Rizwan Ul Hassan, Mirkomil Sharipov, WonHyoung Ryu","doi":"10.1186/s40486-023-00194-7","DOIUrl":"10.1186/s40486-023-00194-7","url":null,"abstract":"<div><p>The utilization of high-resolution printed flexible electronic devices is prevalent in various fields, including energy storage, intelligent healthcare monitoring, soft robotics, and intelligent human–machine interaction, owing to its compact nature and mechanical flexibility. The EHD jet printing technology has the potential to develop the field of printing industry through its ability to fabricate high-resolution, flexible, stretchable, and 3D structures for electronic applications such as displays, sensors, and transistors. The EHD jet printing technology involves the use of solution-based inks made of diverse functional materials to print a wide range of structures. Consequently, it is imperative to have a comprehensive understanding of nanomaterial composites that are printed using EHD jet printing technology. This review provides a thorough overview of nanomaterial composite inks printed for electronic devices using EHD jet printing technology. In particular, a comprehensive overview has been provided about the utilization of EHD jet printing for nanomaterial composites in several domains, including flexible electrodes, flexible displays, transistors, energy harvesting, sensors, and biomedical applications. Moreover, this analysis presents a concise overview of the limitations and prospective future directions for nanomaterial composites fabricated by EHD jet printing.</p></div>","PeriodicalId":704,"journal":{"name":"Micro and Nano Systems Letters","volume":"12 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://mnsl-journal.springeropen.com/counter/pdf/10.1186/s40486-023-00194-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139090589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PCB-based digital microfluidic platform for droplet mixing on an open surface 在开放表面上进行液滴混合的基于 PCB 的数字微流控平台

IF 3.6

Micro and Nano Systems Letters Pub Date : 2024-01-03 DOI: 10.1186/s40486-023-00192-9

Hyunwoo Kim, Sang Kug Chung, Jeongmin Lee

{"title":"PCB-based digital microfluidic platform for droplet mixing on an open surface","authors":"Hyunwoo Kim, Sang Kug Chung, Jeongmin Lee","doi":"10.1186/s40486-023-00192-9","DOIUrl":"10.1186/s40486-023-00192-9","url":null,"abstract":"<div><p>This paper presents a digital microfluidic (DMF) platform based on a printed circuit board (PCB) for droplet mixing. Mixing droplets without a top cover plate is important for bio-chemical analysis. For this reason, a more efficient mixing method is required especially for mixing a viscous liquid droplet in an open surface. Here, to improve the performance of droplet mixing, we propose the integration of an acoustically oscillating bubble to an electrowetting-on-dielectric (EWOD) chip, which can generate microstreaming inside the droplet. Firstly, an EWOD chip integrated with through-holes for bubble trapping was designed and fabricated through PCB fabrication. This PCB manufacturing technology helps to place more electrodes in the limited chip size. Secondly, we developed the custom-made circuit and interface to individually control multiple actuators (including EWOD actuation and acoustic excitation). Finally, an operation test was conducted to evaluate the capability of not only droplet transportation but also mixing on an open surface. The proposed PCB-based DMF platform for bubble-induced droplet mixing was experimentally verified and expected to make DMF chips more efficient when used for clinical point-of-care diagnostic applications.</p></div>","PeriodicalId":704,"journal":{"name":"Micro and Nano Systems Letters","volume":"12 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://mnsl-journal.springeropen.com/counter/pdf/10.1186/s40486-023-00192-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139090578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Uniform formation and characterization of Au/TiO2 nanoparticles for electrokinetically assisted optofluidic reactors 用于电动力辅助光流体反应器的 Au/TiO2 纳米粒子的均匀形成和表征

IF 3.6

Micro and Nano Systems Letters Pub Date : 2023-12-15 DOI: 10.1186/s40486-023-00190-x

Eunseok Seo, Jaehyun Jung, Cong Wang, Jungyul Park

{"title":"Uniform formation and characterization of Au/TiO2 nanoparticles for electrokinetically assisted optofluidic reactors","authors":"Eunseok Seo, Jaehyun Jung, Cong Wang, Jungyul Park","doi":"10.1186/s40486-023-00190-x","DOIUrl":"10.1186/s40486-023-00190-x","url":null,"abstract":"<div><p>Research is being conducted on photocatalyst-based organic compound treatment processes for water purification to decompose wastewater efficiently. An optofluidic reactor based on TiO<sub>2</sub> photocatalysis and nanoelectrokinetics was presented recently to improve the efficacy of photocatalytic water purification. However, inefficient absorption of visible light by TiO<sub>2</sub> materials hinders the effective utilization of solar energy. To address this issue, the uniform formation and characterization of Au/TiO<sub>2</sub> nanoparticles for a plasmonic photocatalytic-based optofluidic platform are studied to improve photocatalytic reactivity in visible light. The present study uses UV irradiation and spray spraying for producing Au/TiO<sub>2</sub> NPs uniformly on microporous carbon fabric. Energy dispersive X-ray analysis (EDX), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and X-ray diffraction (XRD) were used to assess the quality of the Au/TiO<sub>2</sub> NP-coated carbon fabric. Au NPs were uniformly obtained on the surface and inside the TiO<sub>2</sub> coating layer by UV irradiation-based photo-reduction, according to SEM and TEM investigation. The interaction of Au NPs, TiO<sub>2</sub> NPs, and carbon fabric (CF) to improve electron transport and charge separation on the photocatalyst surface is supported by XPS spectra. TEM and XRD analyses revealed that all TiO<sub>2</sub> components in the Au/TiO<sub>2</sub> coating layer consisted of anatase having high photocatalytic activity. After comparing the photocatalytic activity of TiO<sub>2</sub> and Au/TiO<sub>2</sub>-coated samples under solar-simulated light and a voltage of 3 V, it was found that the surface coated with Au NPs had a superior photocatalytic effect than the surface coated with only TiO<sub>2</sub>.</p></div>","PeriodicalId":704,"journal":{"name":"Micro and Nano Systems Letters","volume":"11 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://mnsl-journal.springeropen.com/counter/pdf/10.1186/s40486-023-00190-x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138678792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and optoelectronic properties of an anthracene derivative 一种蒽衍生物的合成与光电特性

IF 3.6

Micro and Nano Systems Letters Pub Date : 2023-12-15 DOI: 10.1186/s40486-023-00187-6

Darya Khan, Zhang Xiaotao, Muhammad Hasnain Jameel, Mohd Arif Bin Agam, Muhammad Sufi Bin Roslan, Majed A. Bajaber

{"title":"Synthesis and optoelectronic properties of an anthracene derivative","authors":"Darya Khan, Zhang Xiaotao, Muhammad Hasnain Jameel, Mohd Arif Bin Agam, Muhammad Sufi Bin Roslan, Majed A. Bajaber","doi":"10.1186/s40486-023-00187-6","DOIUrl":"10.1186/s40486-023-00187-6","url":null,"abstract":"<div><p>An asymmetric a-side alkyl chain anthracene derivative 6-(4 (-2 Ethyl Octyl) Phenyl) 2Phenyl Anthracene (EOPPA) was designed based on a π-electron skeleton with a side alkyl chain of anthracene core molecule. EOPPA was found to be a sturdy and high-performance p-type semiconductor for optoelectronic applications. The creation has successfully made this new material EOPPA with the best solubility, which exhibits both sufficient solvent solubility and thermal stability. The asymmetrical structural features of EOPPA allowed for the preparation of two-dimensional crystalline thin films in micrometer sizes with 100 nm thicknesses on a Si/SiO<sub>2</sub> substrate through a solution processing method. The efficient solution processing synthesis of EOPPA and its high performance suggest that it has great potential in the field of organic electronics. The EOPPA demonstrated optoelectronic properties, crystalline structure, and good thin-film transistors having mobilities higher than 0.18 cm<sup>2</sup> V<sup>−1</sup> S<sup>−1</sup>, and a high current on/off ratio that can withstand temperatures of almost 225 °C. Furthermore, EOPPA presents good potential to be amongst the next generation of p-type anthracene core organic semiconductors, especially for practical printed electronics applications.</p></div>","PeriodicalId":704,"journal":{"name":"Micro and Nano Systems Letters","volume":"11 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://mnsl-journal.springeropen.com/counter/pdf/10.1186/s40486-023-00187-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138678744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0