Article
Engineering, Electrical & Electronic
Jie Liu, Yuyao Li, Youming Luo, Quanfang Chen
Summary: This study reports the feasibility of using a type of single-walled carbon nanotubes (SWCNTs)/Parylene-C composite membrane for the fabrication of a CMUT. The innovative aspect lies in the replacement of traditional silicon-based membranes with SWCNTs/Parylene-C composite membranes, which simplifies the process and reduces manufacturing costs. The SWCNTs/Parylene-C composite membrane exhibits excellent mechanical and electrical properties, making it a potential material for CMUT fabrication.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Sedat Kurnaz, Ozgur Ozturk, Nurdane Yilmaz, Osman Cicek
Summary: This study successfully synthesized Parylene C through chemical vapor deposition and fabricated flexible piezoelectric, piezoresistive, and capacitive pressure sensors using Parylene C. The sensors showed high sensitivities and short response and relaxation times. The research also discovered the potential applications of Parylene C in wearable healthcare monitoring, human-machine interfaces, and soft robotics in the low-pressure range.
IEEE SENSORS JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Zhenxiang Bu, Lujiang Liu, Changzhi Zhong, Shiqi Wang, Dandan Gu, Lingyun Wang
Summary: An innovative LC-C resonant wireless passive pressure sensor based on dual capacitors was designed and manufactured in this study to replace traditional LC devices. The key structural dimensions of the sensor were determined through numerical analysis and simulations, showing high sensitivity and low linear fitting error in test results.
IEEE SENSORS JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Mani Teja Vijjapu, Sandeep G. Surya, Jr-Hau He, Khaled N. Salama
Summary: This study demonstrates the fabrication of a self-powered sensor using hybrid-halide perovskites and semiconducting metal oxide thin film for detection of NO2 gas and power generation. The sensor shows remarkable sensitivity, selectivity, and repeatability even under low concentrations of NO2, and remains sensitive and robust under extreme humidity conditions. The developed sensor configuration serves as a reference for the development of self-powered sensors by eliminating the cross-sensitivity issue associated with perovskite-based devices.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Electrical & Electronic
Semih Taniker, Vincenzo Costanza, Paolo Celli, Chiara Daraio
Summary: We propose the realization of capacitive temperature sensors based on the concept of displacement amplification. Our design utilizes high CTE metallic layers and a low CTE dielectric layer to achieve large out-of-plane displacements and capacitive changes as the temperature increases.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Analytical
Samuel M. Mugo, Weihao Lu, Stephane Lemieux
Summary: This study develops a simple and cost-effective multiplex sensor for simultaneous detection of nitrates, phosphates, and pH in soil and water. The microneedle sensors are fabricated using a layer-by-layer assembly method and show excellent selectivity and sensitivity for the targeted analytes.
Article
Materials Science, Multidisciplinary
Haruka Saito, Izumi Muto, Masashi Nishimoto, Yu Sugawara
Summary: Corrosion-resistant stainless steels containing Mo-rich areas were fabricated by sintering Type 304 L and Mo powders. The effects of heat treatment conditions and Mo concentration on pitting corrosion resistance were assessed, and an appropriate microstructure for achieving higher resistance was determined.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Ye-Seul Lee, Ji-Hyeon Yoon, Akeem Raji, Seung-Yo Baek, Yoonseuk Choi, Jonghee Lee, Akpeko Gasonoo, Jae-Hyun Lee
Summary: Visible parylene films with adjustable haze were produced by tuning the pyrolysis temperature of parylene-C. These films exhibited a certain level of haze and transmittance, and had high resistivity, making them suitable for insulation coatings in optical systems and electronic devices.
Article
Materials Science, Multidisciplinary
Ariane Neves de Moura, Claudio Moreira de Alcantara, Estefano Aparecido Vieira, Daniella Gomes Rodrigues, Wilian da Silva Labiapari, Marco Antonia da Cunha, Tarcisio Reis de Oliveira, Marcos Tadeu D'Azeredo Orlando
Summary: This study investigated the microstructures and textures of AISI 410, AISI 420, and EN 1.4116 stainless steels after cold rolling and recrystallization. The experimental results showed that the (Cr,Fe)23C6 carbide fraction, initial grain size, and initial texture significantly influenced the stored energy after cold rolling and grain growth during annealing.
MATERIALS CHARACTERIZATION
(2022)
Article
Engineering, Electrical & Electronic
Yu Zeng, Yafei Qin, Youpeng Yang, Xinyu Lu
Summary: This work presents a flexible capacitive pressure sensor with low cost, excellent performance, and promising applications. The sensor features a simple preparation method, inexpensive materials, fast response, high sensitivity, wide operating range, and stability.
IEEE SENSORS JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Jing Xu, Graham S. Wood, Enrico Mastropaolo, Michael J. Newton, Rebecca Cheung
Summary: This study introduced an acoustic capacitive microphone made of graphene/PMMA, in which an ultra-large graphene/PMMA membrane with small deformation was suspended over the cavity using a unique fabrication method. The dynamic behavior and acoustic response of the device were characterized, showing high sensitivity and minimal strain in the membrane.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Sara Rachel Arussy Ruth, Vivian Rachel Feig, Min-gu Kim, Yasser Khan, Jason Khoi Phong, Zhenan Bao
Summary: To mimic human touch sensing, robotics require leveraging multiple sensory inputs. A new design has been created for a multifunctional capacitive pressure sensor with proximity-sensing capabilities, which can strongly sense pressure in contact mode as an equivalent parallel plate capacitive sensor of the same size.
Article
Nanoscience & Nanotechnology
Meshari Alsharari, Baixin Chen, Wenmiao Shu
Summary: Additive manufacturing technologies like fused deposition modeling offer the potential for rapid prototyping and innovative designs. This paper introduces a method for fabricating soft compressible multi-layered pressure sensors through FDM 3D multi-material printing, resulting in highly sensitive and tunable sensors with enhanced compressibility and wide sensing range.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Cuong Do, Ashwin A. Seshia
Summary: Temperature compensation is crucial for MEMS sensors, and a new active method based on a 2-D capacitive structure design is proposed in this work. The method consumes zero-power and achieves a gauge factor of 7, with a capacitance variation of 1 ppm/degrees C compared to conventional designs. This approach shows promise for low-power temperature-compensated sensors in battery-powered or energy-harvesting applications.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Xueyang Liu, Chuanliang Li, Zhentao Wang, Yifeng Li, Jianqiu Huang, Huiyang Yu
Summary: This paper presents flexible pressure sensors based on 3D printing technology, with a sandwich structure design and a hollow prism structure pressure sensitive layer. Experimental synthesis of three kinds of flexible composite dielectrics demonstrated that the sensor with PDMS doping both BaTiO3 and CNTs showed the highest sensitivity, 1.3 times that of the reference sensor, indicating that fabricating composite dielectrics in this way has the potential to improve device performance.
IEEE SENSORS JOURNAL
(2021)
