Article
Chemistry, Multidisciplinary
Ethan B. Secor, Nelson S. Bell, Monica Presiliana Romero, Rebecca R. Tafoya, Thao H. Nguyen, Timothy J. Boyle
Summary: An alternative method based on air-stable nanoscale metal hydrides for conductive inks was presented, with successful printing of conductive patterns on polyimide achieved. TiH2 nanoparticles produced by specific processing steps enabled the preparation of high-resolution conductive patterns.
Article
Chemistry, Physical
Jung Gun Bae, Ji Hoon Kim, Kyusoon Shin, Won Bo Lee
Summary: Screen printing (SP) has been widely studied for industrial applications, but there have been few studies on the effect of substrate. In this study, it is demonstrated that the screen-printed lines can undergo broadening or lateral undulation, which depends on the substrate and printed dimensions. The spreading degree was systematically investigated using 1D and 2D geometrical parameters. Based on the ink's liquidity, a simple inviscid theory with imposed perturbation was developed to analyze the instability of screen-printed lines. The derived dispersion relation was compared with experimental results to estimate the geometry of the undulated lines, particularly in cases where SP inks have higher liquidity. The screen-printed patterns with unique undulated shapes were used as photomasks for the easy fabrication of raccoon-type microchannels.
Article
Engineering, Electrical & Electronic
Michela Borghetti, Edoardo Cantu, Andrea Ponzoni, Emilio Sardini, Mauro Serpelloni
Summary: In this work, low-cost and eco-friendly paper-based gas sensors for food smart packaging were manufactured and experimentally analyzed. These sensors utilize the hygroscopic properties of paper to detect water-soluble gases and gaseous markers of food spoilage. The sensors, printed using aerosol jet printing and sintered by flash lamp annealing on chromatographic paper, showed good selectivity in detecting different concentrations of ammonia and interfering compounds such as ethanol and acetone.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Computer Science, Information Systems
Jiani Fan, Wenzhuo Yang, Ziyao Liu, Jiawen Kang, Dusit Niyato, Kwok-Yan Lam, Hongyang Du
Summary: A smart city is a concept that aims to better serve residents through new technology. This article focuses on four major smart city domains: smart utility, smart transportation, smart homes, and smart healthcare. However, the existing smart city IoT solutions often lack appropriate security strategies. The objective of this article is to provide application designers with the missing security link they may need in order to improve their security designs.
IEEE INTERNET OF THINGS JOURNAL
(2023)
Article
Construction & Building Technology
Jose Joaquin Peralta Abadia, Christian Walther, Ammar Osman, Kay Smarsly
Summary: Recent developments in smart sensing technologies have led to the widespread use of smart city applications that rely on IoT frameworks. However, the definitions of smart city and IoT framework vary. This study aims to consolidate these definitions and provide a systematic survey of IoT frameworks for smart city applications, ultimately proposing an abstract IoT framework concept.
SUSTAINABLE CITIES AND SOCIETY
(2022)
Review
Engineering, Electrical & Electronic
Rakiba Rayhana, Gaozhi George Xiao, Zheng Liu
Summary: Smart farming integrates advanced technologies to increase crop yield and quality, reduce costs, and improve efficiency; sensors play a critical role by providing important information on soil conditions, plant growth, and environmental factors; printed sensors, with their unique features, have gained attention for various applications in smart farming.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Engineering, Electrical & Electronic
Khalid J. Almalki, Abdoh Jabbari, Kaushik Ayinala, Sanghak Sung, Baek-Young Choi, Sejun Song
Summary: This paper proposes an energy-efficient linear sensor architecture (ELSA) for building sensor network infrastructure in smart cities. By using a dual-channel wake-up receiving method and designing a pipelined relay algorithm, ELSA addresses the energy and delay issues in linear sensor networks and achieves efficient energy utilization and constant network delay.
IEEE SENSORS JOURNAL
(2022)
Article
Engineering, Manufacturing
D. R. Hines, Y. Gu, A. A. Martin, P. Li, J. Fleischer, A. Clough-Paez, G. Stackhouse, A. Dasgupta, S. Das
Summary: Additive manufacturing methods are increasingly used for fabricating electronic circuits, with aerosol-jet printing emerging as a promising technique. In order to achieve a more mature aerosol-jet printing methodology, careful control of trace width, ink deposition rate, scale factor, and print speed is essential.
ADDITIVE MANUFACTURING
(2021)
Article
Chemistry, Analytical
L. Vigna, A. Verna, S. L. Marasso, M. Sangermano, P. D'Angelo, F. C. Pirri, M. Cocuzza
Summary: The study demonstrates that gas sensors using PEDOT:PSS with post-treatments of H2SO4 and MeOH can improve gas sensing performance, with MeOH treatment showing the best response towards ammonia and NO2. Long-term stability and temperature have minimal impact on the sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Nanoscience & Nanotechnology
Seongyeop Lim, Sanghwan Park, Seung Min Moon, Jin Yoo, Jae Hong Choi, Jin Hyun Park, Seongwoo Lee, Hyegi Min, Yun-Tae Kim, Cheongha Lee, Seungmin Kang, Yoon Jeong Jang, Moonsik Shin, Han Yong Bae, Chang Young Lee
Summary: This study presents a colorimetric paper that can detect and identify chemical warfare agents in both liquid and gas phases by inkjet printing carbon nanotube-based chemiresistors on the paper. The printed carbon nanotubes generate unique electrical signals for liquid-phase chemical warfare agents without affecting the colorimetric responses, enabling accurate analyte identification. The study also demonstrates the fabrication of a gas sensor array on the paper using inkjet printing, allowing the identification of CWA simulants based on response patterns.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Analytical
Celio Marcio Soares Ferreira, Charles Tim Batista Garrocho, Ricardo Augusto Rabelo Oliveira, Jorge Sa Silva, Carlos Frederico Marcelo da Cunha Cavalcanti
Summary: The emergence of 5G will lead to a widespread adoption of IoT devices, particularly in Smart Cities. The integration of Blockchain with IoT can provide distributed security information to address challenges in reliability and security.
Article
Materials Science, Multidisciplinary
Fan Chen, Xuyi Li, Guoyi Liu, Jizhong Zhao, Li Zhao, Yifang Shi, Yuxia Shi, Zijie Xu, Wenxi Guo, Yufei Liu
Summary: A technique combining ink-jet printing and electrodeposition is introduced to fabricate pattern electrodes on silk fibroin and polyurethane composite films. The addition of polyurethane improves the chemical properties of silk fibroin while maintaining its permeability and biocompatibility. Different pattern electrodes are successfully printed using ink-jet printing technology, and a layer of nickel is electrodeposited to protect and enhance the conductivity of the electrodes. This technique is beneficial for the manufacture of next-generation in vivo/vitro bioelectronic devices.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Analytical
Zaheer Allam, Simon Elias Bibri, David S. Jones, Didier Chabaud, Carlos Moreno
Summary: The '15-minute city' concept can benefit from the adoption of Smart City network technologies, particularly Digital Twins, IoT, and 6G, to support urban decision-making processes and align with sustainable development goals.
Article
Computer Science, Information Systems
Chih-Yuan Huang, Yao-Hsin Chiang, Fuan Tsai
Summary: This study analyzed existing integration methods for smart city applications and proposed an ontology to address the issues. The proposed ontology supports multiple views of objects and can relate information from different data modeling standards. The application of the ontology was demonstrated in smart home, smart security, smart health care, and fire evacuation systems.
IEEE INTERNET OF THINGS JOURNAL
(2022)
Article
Urban Studies
Leonidas G. Anthopoulos, Zohreh Pourzolfaghar, Kristina Lemmer, Tobias Siebenlist, Bjoern Niehaves, Ioannis Nikolaou
Summary: This paper discusses the importance of smart cities as hubs and introduces the concept of SC Hub, which aims to standardize and control the various flows in cities.
