Article
Optics
Xingsheng Wang, Jian Zhang, Xinliang Mei, Bin Xu, Jieliang Miao
Summary: The study introduced a new approach for fabricating fully printed microsensors using combinational laser micromachining techniques, which showed high sensitivity and short response time.
OPTICS AND LASERS IN ENGINEERING
(2021)
Article
Chemistry, Physical
Soongeun Kwon, Taeksu Lee, Hak-Jong Choi, Junhyoung Ahn, Hyungjun Lim, Geehong Kim, Kee-Bong Choi, JaeJong Lee
Summary: The study demonstrated the use of thermal transfer printing for scalable fabrication of a graphene-based textile microsupercapacitor. The developed device showed excellent capacitance retention after repeated cycles of bending deformation and fast ion transport, suggesting promising applications in practical scenarios.
JOURNAL OF POWER SOURCES
(2021)
Article
Engineering, Electrical & Electronic
Abubakar Sharif, Turke Althobaiti, Abdullah Alhumaidi Alotaibi, Naeem Ramzan, Muhammad Ali Imran, Qammer H. H. Abbasi
Summary: This article presents an ink-jet printed ultrahigh-frequency (UHF) radio frequency identification (RFID) label for tagging fruits. The proposed tag antenna is based on a hybrid configuration, which consists of a loop, dipole-like strips (DLSs), and eye-shaped rectangular nested slots. The loop fulfills impedance matching proposes, while the eye-shaped slots assist to maintain high imaginary impedance to mitigate capacitive effects of high permittivity surfaces of fruits. The fabricated prototype of the proposed tag antenna achieved a read range of 3 m after mounting on apple. Moreover, the tag antenna is also tested for sensing spoilage of apple fruits.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Analytical
Wei Yin Lim, Choon-Hian Goh, Keenan Zhihong Yap, Narayanan Ramakrishnan
Summary: Irregularities in breathing patterns can be predicted with the help of breath monitor sensors that detect variations in humidity during inhalation and exhalation. Graphene-based RH sensors show excellent sensitivity, stability, and repeatability. By embedding the sensor into a face mask and interfacing it with a microcontroller, different breathing situations can be measured, making it a promising wearable and disposable healthcare technology.
Article
Materials Science, Multidisciplinary
Bairui Tao, Lupeng Feng, Fengjuan Miao, Yu Zang
Summary: This study proposes a chipless RFID humidity sensor tag based on SnO2/G nanomaterial, which has recognition and sensing functions. By doping G into SnO2, nano-spherical SnO2 powder is generated and used in the microstrip coupled line resonator structure. Humidity sensitive materials are coated on the u-shaped resonator for humidity sensing, while the other two resonators can code different states. Experimental results demonstrate the excellent humidity sensing performance of the humidity sensitive material.
Article
Chemistry, Analytical
Giada Marchi, Viviana Mulloni, Fabio Acerbi, Massimo Donelli, Leandro Lorenzelli
Summary: Chipless radio-frequency identification (RFID) sensors are not widely used due to their limited sensitivity compared to mature sensing technologies. However, there is little research on the relationship between the performance of chipless or microwave sensors and the materials used to fabricate them. In this study, we simulate the impact of substrate materials on the performance of a chipless RFID sensor for humidity detection. The dielectric parameters of the substrate material play a crucial role in maximizing sensor performance, especially in relation to the desired application and the effective dielectric properties of the sensitive material used.
Article
Materials Science, Multidisciplinary
Ursula F. S. Roggero, Silvia V. G. Nista, Hugo E. Hern -Figueroa, Lucia H. I. Mei, Stanislav A. Moshkalev
Summary: This article presents the fabrication of flexible films using two different conductive pastes, and their application in the manufacturing of passive Radio Frequency Identification (RFID) tags. The comparison of the fabricated tags demonstrates that these low-cost materials can be used for mid-range applications, providing an environmentally friendly alternative.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Florian Muralter, Laura Arjona, Hugo Landaluce, Asier Perallos
Summary: This research introduces a passive, modular, computational ultra high frequency radio frequency identification (RFID) research platform, consisting of a software defined radio (SDR) reader and a modular UHF RFID tag. The tag can be subdivided into various modules optimized for easy connectivity, with experimental results confirming the platform's value in designing novel UHF RFID solutions.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Miquel Moras, Carme Martinez-Domingo, Roger Escude, Cristian Herrojo, Ferran Paredes, Lluis Teres, Ferran Martin, Eloi Ramon
Summary: This paper presents an organic, fully recyclable and eco-friendly 20-bit inkjet-printed chipless RFID tag, which operates in the near field and is implemented using chains of resonant elements. The tag is read by displacing it over a resonator-loaded transmission line and each resonant element is interrogated by a harmonic signal tuned to the resonance frequency.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Electrical & Electronic
Rajesh Kumar Singh, Andrea Michel, Paolo Nepa, Alfredo Salvatore, Maria Terraroli, Paolo Perego
Summary: A novel combination of loop and dipole antennas into a Yagi-like structure is investigated for implementing a wearable antenna. Compact Yagi-like textile structures are designed and compared, with parasitic elements acting as reflectors or directors to limit radiation towards undesired directions. Performance of these structures is measured in terms of reflection coefficient and near-field distribution, with read range performance measured using RFID reader and tags.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Nanoscience & Nanotechnology
Chen Ding, Jiayi Wang, Wei Yuan, Xiaojin Zhou, Yong Lin, Guoqing Zhu, Jie Li, Tao Zhong, Wenming Su, Zheng Cui
Summary: The paper introduces a thermal transfer printing method for fabric electrodes, which overcomes the challenges of manufacturing high-performance fabric electrodes while maintaining the original characteristics of textiles. The fabric electrodes prepared by this method exhibit high conductivity, high adhesion, good abrasion/washing resistance, high patterning resolution, and good electromechanical performance.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Ismael Domingos, Zakaria Saadi, Kavya Sreeja Sadanandan, Henrique A. Pocinho, Diogo M. Caetano, Ana I. S. Neves, Monica F. Craciun, Helena Alves
Summary: In this work, a highly efficient flexible triboelectric textile was developed using printed graphene electrodes with polydimethylsiloxane (PDMS) as the triboelectric pair. The textile electrode surpassed non-planarized devices in all three printing techniques, with a 4-fold improvement in power density. By increasing the contact area of the triboelectric textile, the power output reached an effective power of 60 & mu;W. This flexible TENG presents stable output performance and can be used as a wearable sensor to monitor biomechanical movements.
Article
Nanoscience & Nanotechnology
Mengqing Yin, Liqiong Wu, Hua Chen, Xiaohui Zhang, Wei Wang, Zhaoping Liu
Summary: This paper investigates the performance of transparent UHF RFID tags fabricated with graphene films. Experimental tests reveal that increasing the number of graphene film layers can improve the reading distance of the tags. Moreover, the study demonstrates that transparent graphene-based RFID tags possess good flexibility and stability.
Article
Computer Science, Information Systems
Yulong Liu, Mengxia Yu, Bingyi Xia, Silong Wang, Miao Wang, Mingxun Chen, Siqi Dai, Tingzhe Wang, Terry Tao Ye
Summary: The article introduces a textile-based embroidered passive strain and displacement sensor functioned as a UHF RFID antenna, which can modulate RFID chip signals and wirelessly retrieve information from a few meters away without the need for a battery. The sensor is sensitive to strains and displacement caused by body movement, making it ideal for tracking various forms of body movements.
IEEE INTERNET OF THINGS JOURNAL
(2021)
Article
Engineering, Environmental
Lulu Xu, Heng Zhai, Xiao Chen, Yulong Liu, Miao Wang, Zhangchi Liu, Muhammad Umar, Chengyu Ji, Zhongda Chen, Lu Jin, Zekun Liu, Qingwen Song, Pengfei Yue, Yi Li, Terry T. Ye
Summary: This study investigates textile-based humidity sensors constructed from different natural and synthetic fibers, and finds that the graphene-oxide functionalized Coolmax humidity sensor exhibits ultrafast response/recovery time and insensitivity to external pressure and temperature changes.
CHEMICAL ENGINEERING JOURNAL
(2021)
