Article
Multidisciplinary Sciences
Shinji Bono, Satoshi Konishi
Summary: The spatial resolution of typical sensor probes is insufficient for accurately measuring the distribution of electric properties in microelectrical devices. However, liquid crystal droplets (LCDs) show promise in visualizing this distribution by exhibiting rotational and translational behaviors related to their location within the devices. Through experimental and numerical analysis, we demonstrate that rotating and transporting LCDs allow for the visualization of electric field and electrostatic energy distribution with a spatial resolution of 10 μm and a detection accuracy of 5 μV/μm. Furthermore, we can create an array of LCDs by designing periodic modulation of electrostatic energy density to serve as both a periodic modulator of refractive index and a sensor for observing electric properties in microelectrical devices.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Multidisciplinary
Thomas Falcucci, Kayla F. Presley, Jaewon Choi, Vincent Fizpatrick, Jonah Barry, Jugal Kishore Sahoo, Jack T. Ly, Tod A. Grusenmeyer, Matthew J. Dalton, David L. Kaplan
Summary: Silk-protein biomaterials can be used as scaffold materials in oxygen sensors, providing excellent stability and biocompatibility. Silk films containing oxygen-sensing chromophores show good sensing functionality in vitro and in vivo, operating in various physiological states.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yulong Chen, Ziao Tian, Xiang Wang, Nian Ran, Chen Wang, Anyang Cui, Huihui Lu, Miao Zhang, Zhongying Xue, Yongfeng Mei, Paul K. Chu, Jianjun Liu, Zhigao Hu, Zengfeng Di
Summary: Ternary TMDs alloy Mo1-xWxS2 with different W concentrations was synthesized to increase entropy and precisely control piezoelectric properties. Mo0.46W0.54S2 alloy showed the highest configurational entropy and best piezoelectric properties, suitable for self-powered applications and real-time health monitoring.
ADVANCED MATERIALS
(2022)
Article
Engineering, Mechanical
Lucas Grilli, Fabrice Casset, Christine Bressy, Hugues Brisset, Jean-Francois Briand, Raphaelle Barry-Martinet, Mikael Colin
Summary: This paper presents the development and experimentation of transparent vibrating piezoelectric micromembranes for protecting immersed measurement instruments from marine biofouling. Laboratory bioassays showed great potential against bacterial adhesion, while in situ tests confirmed their antifouling effect. However, in situ experimentations revealed issues with the piezo driver actuating the vibrating membranes, indicating a need for further improvements.
Article
Engineering, Electrical & Electronic
V. Carluccio, L. Fachechi, V. M. Mastronardi, L. Natta, L. Algieri, G. de Marzo, F. Rizzi, M. De Vittorio
Summary: This paper reports on miniaturized flexible and compliant piezoelectric devices that can detect and discriminate localized pressures and contacts per unit area with minimal crosstalk. The best responsivity was obtained in samples with diameters of 200 and 500 μm, and crosstalk below -20 dB was observed with a minimum distance of 500 μm between the edges of closed sensors.
IEEE SENSORS JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Claire Jolly, Andres Gomez, David Sanchez-Fuentes, Dilek Cakiroglu, Raissa Rathar, Nicolas Maurin, Ricardo Garcia-Bermejo, Benoit Charlot, Marti Gich, Michael Bahriz, Laura Picas, Adrian Carretero-Genevrier
Summary: By combining chemical solution deposition, soft-nanoimprint lithography, and top-down microfabrication processes, the researchers successfully developed nanostructured epitaxial piezoelectric alpha-quartz MEMS on silicon. This system demonstrates high force and mass sensitivity while maintaining mechanical quality factor, proving the feasibility of low-cost production.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Engineering, Environmental
Zengkai Wang, Yanhua Cui, Yonghai Feng, Li Guan, Mingdong Dong, Zheng Liu, Lei Liu
Summary: A flexible and multifunctional SF-based membrane was developed through electrospinning, composed of SF nanofibers doped with piezoelectric LiNbO3 (LN) nanoparticles and graphitic carbon nitride (g-C3N4). The incorporation of LN enhanced the mechanical properties of the SF membrane and provided it with piezoelectric properties for generating electrostatic interactions to improve the absorption of particulate matters (PMs) and bacteria. Integration of g-C3N4 into LN/SF nanofibers enabled the composite fibers to exhibit good disinfection under visible light irradiation while maintaining strong mechanical properties. The SF-based nanofiber membrane showed excellent degradability, and its enhanced mechanical properties allowed for versatile applications, such as improved efficiency in filtering PMs and bacteria, as well as bacterial eradication.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Changwan Sohn, Hyunseung Kim, Jihoon Han, Ki-Tae Lee, Andris Sutka, Chang Kyu Jeong
Summary: This research investigates the piezoelectricity of an electrospun silk nanofiber membrane for biodegradable piezoelectric energy harvesters. It is found that the conventional poling process declines the piezoelectric response of silk fibroin nanofibers. High-performance energy harvesting devices with specific sensor applications are demonstrated using biodegradable silk nanofiber membranes.
Article
Polymer Science
Guimao Fu, Qisong Shi, Yongri Liang, Yongqing He, Rui Xue, Shifeng He, Yanjun Chen
Summary: The development of multi-functional piezoelectric polymer film is highly significant for wearable functional devices, flexible sensors, and intelligent wearables. This study prepared a fluorescent labeled multimode pressure sensor using electrospinning technology with P(VDF-HFP) nanocomposite films. The sandwich-structured devices showed high sensitivity, piezoelectric output, fluorescence functionality, flexibility, and thermal properties. The results suggest that sandwich-structured devices based on fluorescent labeled electroactive P(VDF-HFP) composite nanofiber films have great potential for multi-functional flexible sensors and intelligent wearables.
Article
Engineering, Electrical & Electronic
M. Schloegl, S. Koepl, J. Hiesberger, M. Schneider, U. Schmid
Summary: This work presents a piezoelectric MEMS strain sensor based on a microbridge structure, fabricated using standard CMOS processing techniques. The sensor exhibits exceptional strain detection performance and high gauge factors.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Review
Chemistry, Physical
Asmita Veronica, I-Ming Hsing
Summary: The production of bioelectronics should adopt sustainability concepts, and green electronics is gaining attention as a new concept. Silk, as a green material with innate piezoelectricity, can be used to manufacture self-powered bioelectronic systems.
Article
Automation & Control Systems
Guifang Liu, Xiaoliang Chen, Xiangming Li, Chunhui Wang, Hongmiao Tian, Xiaoming Chen, Bangbang Nie, Jinyou Shao
Summary: A new flexible piezoelectric sensor with in situ temperature sensing and piezoelectricity calibration function has been developed in this study. The sensor can calibrate the piezoelectric output based on temperature to achieve high-accuracy sensing capability. The study systematically studied the influence of temperature on piezoelectric output and established a calibration method to improve the accuracy of piezoelectric output under temperature changes. The application of this flexible sensor in the industrial field can be promoted with its structural design and piezoelectricity calibration method.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Jonas Hafner, Marco Teuschel, Davide Disnan, Michael Schneider, Ulrich Schmid
Summary: This study successfully enhanced and controlled the piezoelectric activity of polymer-based MEMS resonators by utilizing the non-linear electrostrictive effect in ferroelectric polymers. The results demonstrate the potential for tuning and improving the piezoelectric response through bias-induced polarization, showcasing the ability to tailor actuating and sensing properties in MEMS devices.
MATERIALS RESEARCH LETTERS
(2021)
Article
Polymer Science
Qisong Shi, Rui Xue, Yan Huang, Shifeng He, Yibo Wu, Yongri Liang
Summary: Polyacrylonitrile composite fibers doped with imidazolium type ionic liquids and europium nitrate hexahydrate exhibit excellent mechanical properties, hydrophobic self-cleaning ability, light emission, and piezoelectric sensitivity, making them suitable for low-pressure detection.
Article
Cell & Tissue Engineering
Jeong Chan Lee, Il Won Suh, Chan Hee Park, Cheol Sang Kim
Summary: Research on bio-piezoelectric materials is actively conducted since applying electrical stimulation can promote cell growth, proliferation, and tissue regeneration. In this study, a composite material of PVDF and SF was prepared through electrospinning technology. Results showed that adding an appropriate amount of SF could improve the tensile strength, enhance cell proliferation rate, and generate a voltage similar to that of a conventional PVDF-only electrospinning mat.
JOURNAL OF TISSUE ENGINEERING AND REGENERATIVE MEDICINE
(2021)
Review
Acoustics
Jose Joseph, Bo Ma, B. T. Khuri-Yakub
Summary: This article comprehensively reviews all the practical applications of CMUT up to now, providing detailed information on device properties and experimental details.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2022)
Article
Chemistry, Analytical
Srinivasulu Kanaparthi, Shiv Govind Singh
Summary: Simultaneous detection of multiple toxic gases using room temperature gas sensors is important in low-power environmental monitoring. This study proposes a computationally less intensive method to predict the composition of mixed gases using linear gas sensors. The proposed algorithm can accurately predict the concentrations of individual gases in mixed gas with low energy consumption.
ANALYTICAL CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Venkata Ramesh Naganaboina, Mariappan Anandkumar, Atul Suresh Deshpande, Shiv Govind Singh
Summary: This article presents a CO2 gas detection method using Y-HEC-based sensors, which exhibit excellent sensing performance at room temperature, including wide-range detection, fast response and recovery times, high repeatability and selectivity, and good long-term stability.
ACS APPLIED NANO MATERIALS
(2022)
Article
Engineering, Manufacturing
Satish Bonam, Jose Joseph, C. Hemanth Kumar, Asisa Kumar Panigrahi, Siva Rama Krishna Vanjari, Shiv Govind Singh
Summary: This paper reports the fabrication of an on-Silicon aperture-coupled 3D Patch antenna using micromachining and low-temperature, low-pressure Copper thermo-compression bonding. The effectiveness of the antenna was assessed through various analyses including bond strength analysis and radiation pattern analysis. This technology shows great potential for fabricating miniaturized high performance on-chip antennas.
IEEE TRANSACTIONS ON SEMICONDUCTOR MANUFACTURING
(2022)
Article
Nanoscience & Nanotechnology
Tanmoya Nemai Ghosh, Dinesh Ramkrushna Rotake, Shiv Govind Singh
Summary: Cancer is a serious global health burden, and the detection of matrix metalloproteinase 2 (MMP-2) protein is crucial for cancer screening and treatment. A label-free electrochemical biosensor using vanadium disulfide (VS2) nanosheets was proposed in this study. The biosensor showed high sensitivity and selectivity for MMP-2 detection, with a low limit of detection and interference from non-specific proteins. This cost-effective and accurate biosensor provides a solution for cancer diagnosis.
Article
Energy & Fuels
Suresh Madduri, Vaibhavi GKodange, Sai Santosh Kumar Raavi, Shiv Govind Singh
Summary: An all-inclusive investigation is conducted to examine the effect of postprocessing thermal treatment on vacuum-deposited small-molecule organic solar cells (SM-OSC). The study focuses on the donor molecule DTDCTB and three acceptor molecules (ICBA, C-70, C-60) for PV optimization. The devices using ICBA as an acceptor outperform those using C-70 and C-60. The role of thermal treatment on the device performance, particularly in reducing trap assistance recombination, is analyzed using 1-diode Shockley equation modeling and light intensity-dependent J-V characteristics.
IEEE JOURNAL OF PHOTOVOLTAICS
(2023)
Article
Chemistry, Analytical
Partha Pratim Goswami, Satish Bonam, Kumaraswamy Jeyaram, Shiv Govind Singh
Summary: Despite the limitations of complex interactions between nanostructures and target analytes, this paper investigates a field-effect-based biosensor device using energy band diagrams and surface potential profiles. Detection of hazardous foodborne pathogens is carried out using a zinc oxide and MWCNT composite nanostructure. The study addresses the challenge of biosensor device variability through the selection of operating voltage.
ANALYTICAL CHEMISTRY
(2023)
Article
Engineering, Electrical & Electronic
Satish Bonam, K. Aditya Bhagavathi, Jose Joseph, Shiv Govind Singh, Siva Rama Krishna Vanjari
Summary: Tactile sensors are pressure/strain sensors that measure mechanical stimuli from living and nonliving objects to gather information about their physical state. A silk-based ultra-flexible tactile sensor was developed in this study, utilizing the piezoelectric property of silk thin film. The sensor's performance was analyzed in relation to different conditions of silk thin film fabrication. The potential utility of the silk-based tactile sensor in practical applications was assessed, demonstrating its ability to detect and distinguish various body movements accurately and stably.
IEEE SENSORS JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Venkata Ramesh Naganaboina, Satish Bonam, Mariappan Anandkumar, Atul Suresh Deshpande, Shiv Govind Singh
Summary: Improving the performance of chemiresistive gas sensors involves optimizing both the material and the electrode interfaces and interdigitated electrode structures (IDEs) geometry. In this study, the IDEs geometry (spacing between fingers, finger width, and number of fingers) was systematically optimized using a methane selective nanomaterial. The findings showed that changing the dimensions of the IDEs led to improved sensing response, with an increase of 1.2/1.54 times when adjusting the finger spacing/finger width, and a 2.42-fold improvement and a 3.91-fold decrease in sensing response when changing the number of fingers. This research opens up possibilities for fabricating low-power highly sensitive gas sensors that can be integrated into the Internet of Things.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Analytical
Dinesh Ramkrushna Rotake, Tanmoya Nemai Ghosh, Shiv Govind Singh
Summary: Age-related macular degeneration (AMD) is a chronic retinal disease that causes vision loss and blindness in older adults worldwide. A new electrochemical sensor using indium-doped zinc oxide (InZnO) nanofibers can detect clinically relevant concentrations of C3 protein in the tear fluids of AMD patients. The nanofibers enhance the charge transport mechanism and have a very low detection limit, making them a promising diagnostic platform for AMD.
Article
Engineering, Electrical & Electronic
Ullas Pandey, Tushar Deshpande, Amit Agrawal, Shiv Govind Singh
Summary: Among gynecological malignancies, ovarian cancer has the highest mortality rate worldwide. The limitations of traditional detection methods lead to delays in diagnosis. This study proposes a novel and efficient device for detecting and quantifying vimentin protein, a potential biomarker for ovarian cancer. The device, a low-cost chemiresistive biosensor, demonstrates high sensitivity, selectivity, and speed. It also includes a Python-based algorithm for optimum response selection. With its excellent performance, it achieves vimentin sensing using chemiresistive technique for the first time.
IEEE SENSORS LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Nirupam Paul, Sudharsan Vadnala, Satish Bonam, Amit Agrawal, Siva R. K. Vanjari, Shiv Govind Singh
Summary: La1-xSrxMnO3 manganite oxides have great potential for infrared sensing. The La0.7Sr0.3MnO3 nanofibers synthesized by electrospinning process and suspended between gold interdigitated electrodes show outstanding thermo-electrical properties suitable for IR sensing. The fabricated LSMO nanofibers based microbolometer has a significantly low thermal time constant and exhibits high voltage responsivity, confirming its potential as industrial thermal sensors.
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
(2023)
Review
Chemistry, Physical
Venkata Ramesh Naganaboina, Shiv Govind Singh
Summary: Gas sensors based on chemiresistive technology have attracted attention due to their small size, low-cost fabrication, predictable electrical properties, and compatibility with electronic circuits. However, these sensors have limitations such as poor selectivity, high limit of detection, poor reversibility, high operating temperature, and poor stability. In this review, the advancements in gas-sensing materials and electrode materials are discussed, along with their impact on the gas-sensing performance. The importance of optimizing the device architecture is highlighted.
CHEMICAL PHYSICS REVIEWS
(2023)
Article
Engineering, Electrical & Electronic
Nikila Nair, A. Akshaya, Jose Joseph
Summary: Rapid analysis of soil properties is crucial for precision agriculture. Soil pH, as an important aspect of precision farming, plays a significant role in determining crop type and yield. However, the conventional method of soil pH analysis is time-consuming and requires sophisticated instruments and skilled workforce. This study demonstrates an all-solid electrode, in-situ soil pH sensor that mitigates the drawbacks of the traditional method.
IEEE SENSORS LETTERS
(2022)
Article
Chemistry, Analytical
Srinivasulu Kanaparthi, Shiv Govind Singh
Summary: A method was presented to quickly measure the concentration of CH4 at room temperature in just 30 seconds by analyzing the sensor's response at different fixed time intervals after gas exposure and mapping them to gas concentration for rapid measurement. This approach can be used in various applications where fast quantification of gas is essential.
ACS MEASUREMENT SCIENCE AU
(2021)