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High-Performance Pressure and Temperature dual-mode sensor Based on Thermoelectric Aerogels for Multimodal Intellectual Panel Application

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ADVANCED MATERIALS TECHNOLOGIES 2025年第0期

作者： Jiang, Saihua Wang, Zubin Li, Shun Huang, Yubing Lan, Yang Li, Guohui South China Univ Technol Inst Safety Sci & Engn Sch Mech & Automot Engn Wushan Rd 381 Guangzhou 510641 Peoples R China South China Univ Technol Guangdong Prov Key Lab Tech & Equipment Macromol A Guangzhou 510641 Peoples R China Univ Catholique Louvain UCLouvain Inst Condensed Matter & NanoSci B-1348 Louvain la Neuve Louvain Belgium UCL Dept Chem Engn London WC1 E7JE England Minist Publ Secur Tianjin Fire Res Inst Tianjin 300381 Peoples R China

Developing sensors with multi-sensory detection capabilities will streamline integrated systems and simplify the integration process. Herein, dual-mode temperature and pressure sensors based on PEDOT: PSS/CNTs/CNF/MXene (PCCM) is established. In terms of temperature sensing, the aerogel structure and introduction of MXene provide ultra-low thermal conductivity, ensuring a stable temperature gradient. The addition of CNTs forms an excellent conductive network, significantly enhancing temperature sensing performance and achieving a maximum Seebeck coefficient of 28.2 mu V K-1, the introduction of MXene ensures PCCM the output electrical signal has ultra-low noise and a high signal-to-noise ratio, allowing the detection of temperature differences as small as 0.05 K. Regarding pressure sensing, the sensitivity exhibited in the low-pressure range (0-4 kPa) is -11.44% kPa-1. Additionally, MXene significantly increases the sensor's electrical conductivity, reducing electron scattering and obstacles, shortening the response and recovery times (120 ms) for pressure measurements, and combining with CNTs/CNF increasing the hardness of the PCCM sensor, thereby expanding the pressure measurement range (0-20 kPa). It also highlights its promising potential for skin-like sensing and human-computer interaction applications by developing a multimodal intellectual panel. This work provides a simple and scalable fabrication method to design high-performance multifunctional sensors for various applications, such as e-skin and robotics.

关键词： aerogel dual-mode sensor high-performance sensing multimodal intellectual panel

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Non-enzymatic Detection of Uric Acid in Serum and Urine by Fluorescent and Visual dual-mode sensor Based on 3-aminophenylboric Acid Functionalized Carbon Dots

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JOURNAL OF FLUORESCENCE 2025年第4期35卷 2309-2320页

作者： Li, Xin Chen, Guoqing Hu, Anqi Xiong, Yi Yang, Taiqun Ma, Chaoqun Li, Lei Gao, Hui Zhu, Chun Wu, Yamin Gu, Jiao Wu, Hui Zhou, Yan Guan, Weinan Zhang, Wei Jiangnan Univ Sch Sci Wuxi 214122 Peoples R China Jiangsu Prov Res Ctr Light Ind Optoelect Engn & Te Wuxi 214122 Peoples R China

Herein, we developed a sophisticated dual-mode sensor that utilized 3-aminophenylboric acid functionalized carbon dots (APBA-CDs) to accurately detect uric acid (UA). Our innovative process involved synthesizing APBA-CDs that emitted at 369 nm using a one-step hydrothermal method with 3-aminophenylboric acid and L-glutamine as precursors, ethanol and deionized water as solvents. Once UA was introduced to the APBA-CDs, the fluorescence of the system became visibly quenched. The results of Zeta potential, Fourier transformed infrared (FTIR) spectra, fluorescence lifetime, and other characteristics were analyzed to determine that the reaction mechanism was static quenching. This meant that after UA was mixed with APBA-CDs, it combined with the boric acid function on the surface to form complexes, resulting in a decrease in fluorescence intensity and a blue shift in the absorption peak at about 295 nm in the Ultraviolet-visible (UV-vis) absorption spectra. We were pleased to report that we have successfully used the dual-reading platform to accurately detect UA in serum and human urine. It provided a superior quantitative and visual analysis of UA without the involvement of enzymes. We firmly believe that our innovative dual-mode sensor has immense potential in the fields of biosensing and health monitoring.

关键词： Fluorescence Carbon dots dual-mode sensor Uric acid Serum Urine

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Nanochannel array gating dual-mode sensor for T-2 toxin detection via photoelectrochemical and colorimetric approaches

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sensorS AND ACTUATORS B-CHEMICAL 2025年 431卷

作者： Zhang, Jiadong Wang, Yujiang Yang, Yanming Zhu, Kexing Guo, Liming Zhu, Xiufang Hao, Nan Ma, Xiangyu Feng, Liangdong Chen, Yi Huaiyin Inst Technol Natl & Local Joint Engn Res Ctr Mineral Salt Deep Key Lab Palygorskite Sci & Appl Technol Jiangsu Pr Huaian 223003 Peoples R China Nanjing Univ Informat Sci Technol Sch Chem & Mat Sci Nanjing 210044 Peoples R China Chinese Acad Sci Inst Chem Key Lab Analyt Chem Living Biosyst Beijing 100190 Peoples R China

The development of dual-mode sensing technologies is crucial for enhancing detection accuracy by leveraging multiple signal outputs. Conventional multi-mode systems often face challenges such as the need for distinct probes and reagents, which complicates the assay process and introduces cross-interference. To address these issues, we propose a novel approach that spatially segregates detection targets and signal generation. We developed a dual-mode sensor utilizing a nanochannel array in anodized aluminum oxide membranes (AAOM) for the detection of T-2 toxin. This system integrates photoelectrochemical (PEC) and colorimetric sensing modes, where AAOMs are functionalized with T-2 toxin-specific aptamers on gold nanoparticle-modified surfaces. The binding of T-2 toxin facilitates a structural transition in the aptamers, altering the nanochannel array's aperture. This change accelerates the diffusion of ascorbic acid (AA) and hydrogen peroxide, each correlating with PEC and colorimetric signals respectively. The sensor demonstrated excellent linearity within a T-2 toxin concentration range of 0.1 ng/mL to 0.1 mg/mL, with detection limits of 0.056 ng/mL for PEC and 0.048 ng/mL for colorimetric sensing. The method was validated by testing T-2 toxin in beer samples, showing strong agreement with standard high-performance liquid chromatography (HPLC) results. Our dual-mode sensor offers a streamlined design to enhance accuracy and stability, paving the way for future advancements in sensing technologies.

关键词： Nanochannel array gating Anodized aluminum oxide dual-mode sensor T-2 toxin

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Temperature-sensitive driving assembled fluorescence hydrogel based dual-mode sensor for adsorbing and detecting of heavy metal cadmium ions in food and water

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FOOD CHEMISTRY 2025年 470卷 142727页

作者： Wang, Ziwuzhen Sheng, Wei Tang, Xinshuang Ya, Tingting Jin, Zixin Wang, Shuo Ji, Qiuyue Fan, Caixu Liu, Yamin Tianjin Univ Sci & Technol Coll Food Sci & Engn State Key Lab Food Nutr & Safety Key Lab Food Qual & Hlth Tianjin Tianjin 300457 Peoples R China Nankai Univ Sch Med Tianjin Key Lab Food Sci & Hlth Tianjin 300071 Peoples R China

The denatured bovine serum albumin (dBSA) is coupled with the CdTe/CdS quantum dot and the resulting CdTe/ CdS@dBSA complex is assembled and retained in the poly(n-isopropyl acrylamide) (PNIPAM) hydrogel via regulating temperature and pH to form the CdTe/CdS@dBSA-PNIPAM fluorescence hydrogel substrate, which is able to adsorb and sense cadmium ions (Cd2+). Based on this fluorescence hydrogel, a fluorescence and colorimetric dual-mode detection system is established to quantitatively detect Cd2+ with a limit of detection (LOD) of 2.88 nM for fluorescence detection and 11.66 nM for colorimetric detection. Here, the fluorescence and colorimetric detection mode can obtain the dual test signal including the fluorescence signal and visual orange-red color signal. Therein, the utilization of smartphone can achieve the conversion of visual color signals into RGB digital signals, facilitating the interconnection of data among the communication devices. This research provides a novel and advanced strategy for the accurate and real-time detection of Cd2+.

关键词： Cadmium ions Temperature-sensitive fluorescence hydrogel Double adsorption Targeted sensing dual-mode sensor

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Novel ZnS: Cu dual-mode sensor based on monolithic integrated photodetector

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JOURNAL OF MICROMECHANICS AND MICROENGINEERING 2025年第4期35卷 045012-045012页

作者： Cheng, Xiang Zhang, Tingting Chai, Chufen Zhuang, Yixi Liu, Yan Xiamen Univ Pen Tung Sah Inst Micronano Sci & Technol Xiamen Peoples R China Xiamen Hualian Elect Corp Ltd Xiamen Peoples R China Xiamen Univ Coll Mat Xiamen Peoples R China Jimei Univ Sch Ocean Informat Engn Xiamen Peoples R China

Mechanoluminescence (ML) is the emission of photons from materials in response to a mechanical stimulus, with a good correlation between ML intensity and stress amplitude. Depositing a ZnS: Cu layer on the monolithically integrated photodetector surface to construct a stress and light dual-mode sensor. The developed sensor achieves a high-stress sensitivity with a detection limit of 0.525 MPa, a response time under 10 ms, and a minimum resolution of 0.1 MPa. Furthermore, the product is straightforward to manufacture and lightweight. Additionally, the ZnS: Cu layer has light transmission which allows for dual-mode stress and light detection, making it ideal for deployment in large industrial machinery. This work not only proposes a novel dual-mode sensor but also provides a promising approach to extending photodetector utility and functionality by applying a film to the photodetector, opening pathways for versatile applications.

关键词： ZnS: Cu ML response dual-mode sensor monolithic integrated

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A novel fluorometric and colorimetric dual-mode sensor for AMI early diagnosis based on an ultrathin Fe-MOF-74 nanosheet with peroxidase mimic activity and fluorescence properties

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ANALYTICA CHIMICA ACTA 2025年 1350卷 343800页

作者： Liu, Jinyan Wang, Yong Peng, Weijie Qiu, Bin Wong, Kwok-yin Hu, Shuisheng Gannan Med Univ Sch Med & Informat Engn Dept Cardiol Key Lab Prevent & Treatment Cardiovasc & Cerebrova Ganzhou 341000 Jiangxi Peoples R China Hong Kong Polytech Univ State Key Lab Chem Biol & Drug Discovery Dept Appl Biol & Chem Technol Hung HomKowloon Hong Kong Peoples R China Fuzhou Univ Fujian Prov Key Lab Anal & Detect Food Safety Minist Educ Key Lab Analyt Sci Food Safety & Biol Fuzhou 350108 Fujian Peoples R China Jiujiang Univ Affiliated Hosp Dept Pharm Jiujiang 332000 Jiangxi Peoples R China

Background: Cardiac troponin I (cTnI) is a crucial diagnosis biomarker for acute myocardial infarction (AMI). Early accurate determination of the concentration of cTnI significantly decreases the death rate of AMI. Compared with classic methods, dual-mode sensors for cTnI determination could help reduce the false positive rate. Result: In this work, an ultrathin Fe-MOF-74 nanosheet with fluorescence properties and peroxidase mimic ac- tivity was synthesized for the first time. Applying this nanosheet, a novel dual-mode sensor was developed to quantify cTnI in human serum. The ultrathin Fe-MOF-74 nanosheets catalyze the decomposition of hydrogen peroxide produced by glucose oxidase (GOx)-triggered enzyme-linked immunosorbent assay (ELISA) applying cTnI as an antigen target, to generate reactive oxygen species (ROS). 3,3 ',5,5 '-tetramethylbenzidine (TMB) can be oxidized by the generated free radicals, which simultaneously lead to the fluorescence quench of Fe-MOF-74 due to the inner filter effect (IFE). The correlation between the morphology of Fe-MOF-74 and its fluorescence intensity and peroxidase mimic activity was also investigated. Significance: The sensors exhibited linearity with the concentration of cTnI in 10-2000 pg mL- 1 in both the fluorescence and visual mode with the detection limit of 6.4 pg mL- 1 and 8.4 pg mL-1, respectively. It presenting good selectivity and anti-interference ability, can provide accurate and precise results in testing the concentration of cTnI in serum samples from patients in hospitals. It could be applied in the early diagnosis of AMI to reduce the incidence, disability, and mortality rates.

关键词： dual-mode sensor Fluorometric Colorimetric Fe-MOF-74 nanosheet cTnI Early diagnosis

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Flexible dual-mode sensor with accurate contact pressure sensing and contactless distance detection functions for robotic perception

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JOURNAL OF INTELLIGENT MANUFACTURING 2025年第2期36卷 1445-1457页

作者： Chen, Zhijian Wang, Yancheng Zhang, Zhongtan Mei, Deqing Liu, Weijie Donghai Lab Zhoushan 316021 Peoples R China Zhejiang Univ Sch Mech Engn State Key Lab Fluid Power & Mechatron Syst Hangzhou 310027 Peoples R China Zhejiang Univ Sch Mech Engn Zhejiang Prov Key Lab Adv Mfg Technol Hangzhou 310027 Peoples R China

This paper presents a novel flexible dual-mode sensor with both contact pressure and distance sensing abilities for robotic grasping and manipulation applications. The proposed flexible dual-mode sensor measures contactless distances by flat interdigitated electrodes, based on electrical field detection principle. Meanwhile the sensor detects contact pressures by truncated pyramid-shaped porous composites based on graphene nanoplate and silicone rubber. Both the functions of the sensor are encapsulated by cascading assembly, the different sensing units are nested and arranged to avoid coupling effects between different sensing signals. The structural design, working principle, and fabrication process to make the flexible dual-mode sensor were presented. Characterization tests showed that the developed flexible dual-mode sensor has a high sensitivity of 0.33 V/N and stability for contact pressure sensing, this sensor can also detect the distances between objects and sensor with high accuracy. The dual-mode sensor was then mounted onto a robotic arm to perform object's grasping and collision experiments, results demonstrated that the sensor can accurately measure the distributed contact force and distance between objects for tactile perception. Thus, our proposed flexible dual-mode sensor would have great prospects in robotic safety detection and manipulation applications.

关键词： dual-mode sensor Tactile sensing Contact force measurement Collision detection Intelligent robot manipulation

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Self-powered triboelectric dual-mode sensor for tactile sensory

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sensorS AND ACTUATORS A-PHYSICAL 2025年 381卷

作者： Wan, Zhengzhong Chen, Xujun Zhang, Ruihua Ma, Longgang Yang, Zhencan Xiao, Xinqing China Agr Univ Coll Engn Beijing 100083 Peoples R China

The importance of haptic perception is rising with the development of robotics, wearable devices, and humancomputer interaction. Detecting human tactile information is quite important for the development of these fields. In this study, a Self-powered triboelectric dual-mode sensor (STDS) was developed to sense human finger touch and press movements. The sensor employs two operating modes, single-electrode triboelectric nanogenerator (TENG) and vertical contact-detachment TENG, which can detect the touch and press from the finger, respectively, and convert them into electrical signals for output. The use of TENG as the sensing mechanism makes STDS self-powered, which is more sustainable than other tactile sensors. The simple preparation process of STDS and the common and inexpensive materials used in its fabrication give it a cost advantage. In this paper, the performance of the STDS in two modes of operation is tested and simple application tests are performed, which show that the STDS has good stability and reliability and can detect touch and press movements even when gloves are worn. This sensor combines the advantages of dual-mode TENG and has great potential in the field of human touch sensing.

关键词： Triboelectric nanogenerator (TENG) Tactile sensory dual-mode sensor Self-powered sensor

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Molecularly imprinted electrochemiluminescence-colorimetric dual-mode sensor based on Mn@NC nanozyme amplification for the detection of phoxim

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CHEMICAL ENGINEERING JOURNAL 2024年 500卷

作者： Wang, Xinran Zang, Xufeng Wang, Xin Zhang, Wenjie Fang, Yishan Cui, Bo Qilu Univ Technol Shandong Acad Sci Sch Food Sci & Engn Sch Mat Sci & EngnState Key Lab Biobased Mat & Gr Jinan 250353 Peoples R China Huzhou Univ Sch Sci Huzhou Key Lab Mat Energy Convers & Storage Huzhou 313000 Zhejiang Peoples R China

The common detection methods of phoxim mostly rely on the output mode of single signal, which is easily disturbed by complex environmental media and causes errors. Herein, in order to improve the reliability of detection, we developed a dual-mode detection strategy based on nanozyme for the detection of phoxim. Firstly, manganese-nitrogen co-doped carbon nanozyme (Mn@NC) with peroxidase-like activity was synthesized by onestep pyrolysis, which was used to construct in the luminol-H2O2 electrochemiluminescence (ECL) system with molecularly imprinted polymer (MIP) technology. Among them, Mn@NC can act as a co-reaction promoter to catalyze H2O2 to produce large amounts of hydroxyl radicals (center dot OH), thereby significantly amplifying the cathode signal of luminol and improving the stability of the signal. Benefiting from the specific selection of phoxim by MIP, this molecularly imprinted electrochemiluminescence (MIECL) mode has considerable sensitivity and selectivity, with a low limit of detection (LOD) of 0.011 ng/mL (S/N = 3). Moreover, the center dot OH produced by Mn@NC-catalyzed H2O2 oxidized the colorless 3,3 ',5,5 '-tetramethylbenzidine (TMB) to blue oxidized TMB (oxTMB). Taking advantage of the fact that the simultaneous presence of acetylcholinesterase (AChE) and acetylthiocholine (ATCh) inhibited the activity of Mn@NC. A sensitive and simple colorimetric pesticide sensing platform was constructed by combining the nanozyme with the TMB-H2O2 system to achieve the colorimetric detection of phoxim, with the LOD as low as 1.27 ng/mL. The dual-mode sensor was successfully applied to the determination of phoxim in agricultural products with satisfactory results, showing its great potential in the monitoring of food hazards.

关键词： Mn@NC nanozyme Phoxim Electrochemiluminescence Colorimetric Molecularly imprinted polymer dual-mode sensor

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Construction of a Fluorescence/Phase-Change dual-mode sensor Based on Carbon Dots/Poly(acrylic acid) for Highly Selective and Sensitive Detection of Ferric Ions

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ACS APPLIED MATERIALS & INTERFACES 2024年第44期16卷 61036-61049页

作者： Zhou, Yao Li, Huidong Gu, Junqi Fu, Yonglin Liu, Jingchun Li, Zhaoyang Li, Xinlong Liu, Xunyong Qiao, Zhuhui Liu, Yi Ludong Univ Sch Chem & Mat Sci Yantai 264025 Peoples R China Shandong Lab Yantai Adv Mat & Green Mfg Yantai 264006 Peoples R China

Fe3+ is one of the crucial metal ions in biological systems, and its excess or deficiency in the body can trigger various diseases, posing a serious threat to human health. Moreover, improper handling or disposal of Fe3+ can lead to water pollution, thereby harming the environment. Therefore, the development of highly selective and sensitive Fe3+ detection probes is particularly urgent. In this paper, a dual-mode sensor based on sol-gel and fluorescence signal responses was developed for the visual detection of Fe3+. The visual sensing method based on the simultaneous response of Fe3+-triggered dual signals can minimize the interference from false-positive signals and enhance detection accuracy. The dual-mode sensor, denoted as PAA@CDs, was constructed by incorporating high-brightness (high fluorescence emission intensity) green-yellow carbon dots (CDs) into poly(acrylic acid) (PAA), which possesses a large number of carboxyl functional groups. Based on the interaction of Fe3+ with the surface functional groups of CDs, nonfluorescent complexes are formed, leading to nonradiative electron transfer, which induces fluorescence quenching and produces a fluorescence signal visible to the naked eye. Additionally, the interaction of Fe3+ with the carboxyl groups of PAA triggers the cross-linking of PAA, causing a sol-gel phase change signal. Consequently, the PAA@CDs exhibit a dual-response signal in Fe3+ detection. Based on the fluorescence method, the linear detection range of PAA@CDs for Fe3+ is 0.05-2.60 mM with a limit of detection (LOD) of 5.14 mu M. Meanwhile, using the sol-gel method, the linear detection range is 0.02-2.20 mM, and the LOD is 42.5 mu M. Furthermore, the PAA@CDs probes can be successfully applied to the detection of Fe3+ in real water samples, demonstrating their potential value in the analysis of real samples containing multiple ions.

关键词： dual-mode sensor sol-gel method fluorescencemethod ferric ion sensor viscosity quantification

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