Review
Chemistry, Multidisciplinary
Weifeng Zhang, Gaocai Li, Bingjin Wang, Qianqian Zhu, Lingli Zeng, Zhen Wen, Cao Yang, Yue Pan
Summary: TENGs are a state-of-the-art kinetic energy-harvesting technology that can regulate cellular activities and fate determination through bioelectrical stimulation, offering important applications in biology and medical science.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Review
Materials Science, Multidisciplinary
Yiqun Liu, Qi Yu, Li Yang, Yue Cui
Summary: This article discusses the challenges in selecting suitable materials for implantable electronic devices and provides answers to related questions. By exploring various materials and their applications, new opportunities are provided for the construction of future implantable electronic devices and disease diagnosis and therapy.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Review
Chemistry, Multidisciplinary
Chan Wang, Qiongfeng Shi, Chengkuo Lee
Summary: This review provides an overview of the development of IMDs based on triboelectric nanogenerators, including self-powered biosensors, in vivo energy harvesting devices, and direct electrical stimulation therapy devices. Future challenges and opportunities are discussed to enhance output performance, develop advanced triboelectric nanogenerators with multifunctional materials, and self-driven close-looped diagnosis and treatment systems.
Article
Engineering, Electrical & Electronic
Riccardo Raho, Elisa Scarpa, Antonio Nunzio D'Angelo, Denis Desmaele, Federica Raheli, Antonio Qualtieri, Francesco Rizzi, Massimo De Vittorio
Summary: This paper reports on the fabrication and characterization of a novel reusable Flexible Dry Electrode (FDE) for medical applications. The FDEs were made using two flexible substrates and conductive layers, and their performance was tested and compared to commercial gel electrodes. The results showed that the FDEs had comparable performance in bioelectrical impedance analysis (BIA) measurements and demonstrated promising long-term reliability for wearable and portable devices.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Nanoscience & Nanotechnology
Jin Zhang, Biao Ma, Gangsheng Chen, Yi Chen, Chengtao Xu, Qing Hao, Chao Zhao, Hong Liu
Summary: Researchers have developed a new method to create mechanically reliable liquid metal circuits by embedding eutectic gallium-indium (EGaIn) into laser-patterned microgrooves on soft substrates using direct magnetic printing. These surface-embedded liquid metal circuits show resistance to mechanical damage, washing, and peeling, and have potential applications in respiration monitoring and electrical stimulation of nerves.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Electrical & Electronic
Muath Al-Hasan, Penchala Reddy Sura, Amjad Iqbal, Jun Jiat Tiang, Ismail Ben Mabrouk, Mourad Nedil
Summary: This paper proposes a miniaturized dual-band implantable antenna operating at 0.91 GHz and 2.45 GHz, with performances analyzed in different parts of the human body and low SAR. The compact antenna achieves maximum input power of 3.32 mW at 0.91 GHz and 4.37 mW at 2.45 GHz, making it the most compact dual-band implantable antenna reported in the literature for these frequency bands.
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
(2021)
Article
Chemistry, Analytical
Yeonji Oh, Jonggi Hong, Jungsuk Kim
Summary: In this study, a pulse frequency modulation (PFM)-based stimulator is proposed for biomedical implantable devices, specifically for retinal implants. The proposed stimulator is designed to reduce compliance voltage during stimulation, allowing for high-speed and low-voltage operation. It is capable of generating a charge up to 130 nC, consumes an average power of 375 µW, and has a small total area of 700 µm x 68 µm.
Article
Computer Science, Information Systems
Florian Kolbl, Yannick Bornat, Jonathan Castelli, Louis Regnacq, Gilles N'Kaoua, Sylvie Renaud, Noelle Lewis
Summary: The paper introduces a stimulator capable of delivering arbitrary waveforms and suitable for non-conventional stimulation strategies, enabling optimized efficacy or energy efficiency for in vivo stimulation protocols. The system has a wide range of frequential content and high voltage compliance.
Article
Materials Science, Biomaterials
Jian Xiong, Bin Zhang, Andrew Balilonda, Shengyuan Yang, Kerui Li, Qinghong Zhang, Yaogang Li, Hongzhi Wang, Chengyi Hou
Summary: This article introduces a modified graphene-based fiber electrode which not only retains the excellent electrical properties of graphene fiber electrode, but also enhances the charge storage capacity. The modified electrode demonstrates effective control and safety in in vivo experiments.
JOURNAL OF MATERIALS CHEMISTRY B
(2022)
Article
Engineering, Electrical & Electronic
Abdullah J. Alazemi, Amjad Iqbal
Summary: A compact MIMO implantable antenna based on meandered resonators is proposed in this article, featuring small size and high data rates. The antenna achieves compactness through the use of meandered resonators and slots in the ground plane, while ensuring high data rates with a MIMO configuration and optimized distance between elements.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Multidisciplinary Sciences
Emanuel Gunnarsson, Kristian Rodby, Fernando Seoane
Summary: Electro-stimulation has been used successfully for years to alleviate spasticity, pain, and increase mobility. The Mollii-suit by Inerventions utilizes dry conductive rubber electrodes, eliminating the need for frequent replacement. However, fitting the garment on the body is cumbersome. This paper presents the possibility of using knitted dry electrodes instead, which have lower skin friction and can easily be fitted to the body. Through validating the performance of the garment using electrical parameters, it is concluded that knitting techniques can produce a seamlessly integrated garment with beneficial manufacturing and comfort perspectives.
SCIENTIFIC REPORTS
(2023)
Article
Cardiac & Cardiovascular Systems
Gia-Bao Ha, Benjamin A. Steinberg, Roger Freedman, Antoni Bayes-Genis, Benjamin Sanchez
Summary: This study evaluated the interference of smart scales, smart watches, and smart rings with bioimpedance technology on cardiac implantable electronic devices (CIEDs) using simulations and benchtop testing. The results indicate that these consumer electronic devices could interfere with the normal functioning of CIEDs, and their use is not recommended for patients with CIEDs.
Article
Chemistry, Physical
Luming Zhao, Zhongbao Gao, Wei Liu, Chunlan Wang, Dan Luo, Shengyu Chao, Siwei Li, Zhou Li, Changyong Wang, Jin Zhou
Summary: This study proposes a self-powered implantable electrical stimulator based on TENG to induce the maturation of cardiomyocytes. The results show that the stimulator significantly promotes cardiomyocyte maturation and improves sarcomere organization and Ca2+ levels.
Article
Engineering, Biomedical
Canran Wang, Xing Jiang, Han-Jun Kim, Shiming Zhang, Xingwu Zhou, Yi Chen, Haonan Ling, Yumeng Xue, Zhaowei Chen, Moyuan Qu, Li Ren, Jixiang Zhu, Alberto Libanori, Yangzhi Zhu, Heemin Kang, Samad Ahadian, Mehmet R. Dokmeci, Peyman Servati, Ximin He, Zhen Gu, Wujin Sun, Ali Khademhosseini
Summary: A flexible electrical patch (ePatch) made with conductive hydrogel as electrodes was developed to improve wound management. The ePatch showed significant benefits in promoting wound re-epithelization, enhancing angiogenesis, mediating immune response, and preventing infection. In vitro and in vivo studies demonstrated the effectiveness of electrical stimulation in promoting cell proliferation and migration, and in accelerating wound closure.
Review
Chemistry, Analytical
Jiancheng Mo, Ronny Priefer
Summary: Tremors are a common movement disorder that greatly impacts patients' quality of life. While pharmacotherapies are suboptimal in managing tremor, surgical interventions like deep brain stimulation offer durable control but are limited by costs and perceived risks. Medical devices can bridge the gap between lifestyle interventions, pharmacotherapies, and surgical treatments to provide safe and effective tremor suppression.
Article
Robotics
Henry Williams, Mahla Nejati, Salome Hussein, Nicky Penhall, Jong Yoon Lim, Mark Hedley Jones, Jamie Bell, Ho Seok Ahn, Stuart Bradley, Peter Schaare, Paul Martinsen, Mohammad Alomar, Purak Patel, Matthew Seabright, Mike Duke, Alistair Scarfe, Bruce MacDonald
JOURNAL OF FIELD ROBOTICS
(2020)
Article
Agricultural Engineering
Henry A. M. Williams, Mark H. Jones, Mahla Nejati, Matthew J. Seabright, Jamie Bell, Nicky D. Penhall, Josh J. Barnett, Mike D. Duke, Alistair J. Scarfe, Ho Seok Ahn, JongYoon Lim, Bruce A. MacDonald
BIOSYSTEMS ENGINEERING
(2019)
Article
Agricultural Engineering
Mark H. Jones, Jamie Bell, Daniel Dredge, Matthew Seabright, Alistair Scarfe, Mike Duke, Bruce MacDonald
BIOSYSTEMS ENGINEERING
(2019)