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Lingawi S, Hutton J, Khalili M, Shadgan B, Christenson J, Grunau B, Kuo C. Cardiorespiratory Sensors and Their Implications for Out-of-Hospital Cardiac Arrest Detection: A Systematic Review. Ann Biomed Eng 2024; 52:1136-1158. [PMID: 38358559 DOI: 10.1007/s10439-024-03442-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 01/03/2024] [Indexed: 02/16/2024]
Abstract
Out-of-hospital cardiac arrest (OHCA) is a major health problem, with a poor survival rate of 2-11%. For the roughly 75% of OHCAs that are unwitnessed, survival is approximately 2-4.4%, as there are no bystanders present to provide life-saving interventions and alert Emergency Medical Services. Sensor technologies may reduce the number of unwitnessed OHCAs through automated detection of OHCA-associated physiological changes. However, no technologies are widely available for OHCA detection. This review identifies research and commercial technologies developed for cardiopulmonary monitoring that may be best suited for use in the context of OHCA, and provides recommendations for technology development, testing, and implementation. We conducted a systematic review of published studies along with a search of grey literature to identify technologies that were able to provide cardiopulmonary monitoring, and could be used to detect OHCA. We searched MEDLINE, EMBASE, Web of Science, and Engineering Village using MeSH keywords. Following inclusion, we summarized trends and findings from included studies. Our searches retrieved 6945 unique publications between January, 1950 and May, 2023. 90 studies met the inclusion criteria. In addition, our grey literature search identified 26 commercial technologies. Among included technologies, 52% utilized electrocardiography (ECG) and 40% utilized photoplethysmography (PPG) sensors. Most wearable devices were multi-modal (59%), utilizing more than one sensor simultaneously. Most included devices were wearable technologies (84%), with chest patches (22%), wrist-worn devices (18%), and garments (14%) being the most prevalent. ECG and PPG sensors are heavily utilized in devices for cardiopulmonary monitoring that could be adapted to OHCA detection. Developers seeking to rapidly develop methods for OHCA detection should focus on using ECG- and/or PPG-based multimodal systems as these are most prevalent in existing devices. However, novel sensor technology development could overcome limitations in existing sensors and could serve as potential additions to or replacements for ECG- and PPG-based devices.
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Affiliation(s)
- Saud Lingawi
- British Columbia Resuscitation Research Collaborative, Vancouver, BC, Canada.
- School of Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada.
- Centre for Aging SMART, University of British Columbia, 2635 Laurel St., Vancouver, BC, V5Z 1M9, Canada.
| | - Jacob Hutton
- British Columbia Resuscitation Research Collaborative, Vancouver, BC, Canada
- British Columbia Emergency Health Services, Vancouver, Canada
- Department of Emergency Medicine, University of British Columbia and St. Paul's Hospital, Vancouver, BC, Canada
- Centre for Advancing Health Outcomes, University of British Columbia, Vancouver, BC, Canada
| | - Mahsa Khalili
- British Columbia Resuscitation Research Collaborative, Vancouver, BC, Canada
- Centre for Aging SMART, University of British Columbia, 2635 Laurel St., Vancouver, BC, V5Z 1M9, Canada
- Department of Emergency Medicine, University of British Columbia and St. Paul's Hospital, Vancouver, BC, Canada
- Centre for Advancing Health Outcomes, University of British Columbia, Vancouver, BC, Canada
| | - Babak Shadgan
- British Columbia Resuscitation Research Collaborative, Vancouver, BC, Canada
- School of Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada
- Department of Orthopedic Surgery, University of British Columbia, Vancouver, BC, Canada
- International Collaboration on Repair Discoveries, Vancouver, BC, Canada
| | - Jim Christenson
- British Columbia Resuscitation Research Collaborative, Vancouver, BC, Canada
- British Columbia Emergency Health Services, Vancouver, Canada
- Department of Emergency Medicine, University of British Columbia and St. Paul's Hospital, Vancouver, BC, Canada
- Centre for Advancing Health Outcomes, University of British Columbia, Vancouver, BC, Canada
| | - Brian Grunau
- British Columbia Resuscitation Research Collaborative, Vancouver, BC, Canada
- British Columbia Emergency Health Services, Vancouver, Canada
- Department of Emergency Medicine, University of British Columbia and St. Paul's Hospital, Vancouver, BC, Canada
- Centre for Advancing Health Outcomes, University of British Columbia, Vancouver, BC, Canada
| | - Calvin Kuo
- British Columbia Resuscitation Research Collaborative, Vancouver, BC, Canada
- School of Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada
- Centre for Aging SMART, University of British Columbia, 2635 Laurel St., Vancouver, BC, V5Z 1M9, Canada
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Ananthasubramanian P, Sahay R, Raghavan N. Enhancement of the mechanical properties in ultra-low weight SWCNT sandwiched PDMS composites using a novel stacked architecture. Sci Rep 2024; 14:4487. [PMID: 38396000 PMCID: PMC10891152 DOI: 10.1038/s41598-024-54631-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 02/14/2024] [Indexed: 02/25/2024] Open
Abstract
This study focuses on enhancing the mechanical properties of thin, soft, free-standing films via a layer-by-layer (LBL) fabrication process called LBL-FP. Soft polymer nanocomposite (PNC) thin films, combining polydimethylsiloxane (PDMS) and single-walled carbon nanotubes (SWCNT) at ultra-low loadings using a unique bottom-up LBL-FP, are examined. Two different structures of layered composites, (i) LBL PNCs- Layered composites with alternating layers of PDMS and SWCNT, (ii) Bulk PNCs- Layered composites with SWCNT dispersed in the bulk of PDMS, are comparatively investigated for their structural and mechanical properties. Silane-functionalized SWCNT strengthens the chemical bonding with PDMS, improving adhesion and dispersion. Mechanical analysis using nanoindentation, delamination, and dynamic analysis highlights the advantages of LBL PNCs with alternating layers of PDMS and SWCNT. Notably, LBL PNC (0.5 wt%) exhibits significant improvements, such as 2.6X increased nanoindentation resistance, 3X improved viscoelasticity, and (2-5)X enhanced tensile properties in comparison with neat PDMS. Due to this, LBL PNCs offer potential for soft, lightweight applications like wearables, electromagnetic interference shielding materials, and strain sensors while advancing composite thin film mechanics. The study emphasizes using a stacked architecture to produce PDMS-SWCNT multilayered PNCs with improved mechanics utilizing ultra-low concentrations of SWCNT. This first-of-its-kind stack design facilitates possibilities for lightweight composites utilizing less fillers. The LBL assembly involves the stacking of alternating layers of different materials, each contributing specific properties to enhance the overall strength and toughness of the structure.
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Affiliation(s)
- Pavithra Ananthasubramanian
- nano-Macro Reliability Laboratory (nMRL), Engineering Product Development (EPD) Pillar, Singapore University of Technology and Design, 8 Somapah Road, Singapore, 487372, Singapore
| | - Rahul Sahay
- nano-Macro Reliability Laboratory (nMRL), Engineering Product Development (EPD) Pillar, Singapore University of Technology and Design, 8 Somapah Road, Singapore, 487372, Singapore
| | - Nagarajan Raghavan
- nano-Macro Reliability Laboratory (nMRL), Engineering Product Development (EPD) Pillar, Singapore University of Technology and Design, 8 Somapah Road, Singapore, 487372, Singapore.
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Ban S, Lee CW, Sakthivelpathi V, Chung JH, Kim JH. Continuous Biopotential Monitoring via Carbon Nanotubes Paper Composites (CPC) for Sustainable Health Analysis. SENSORS (BASEL, SWITZERLAND) 2023; 23:9727. [PMID: 38139573 PMCID: PMC10748204 DOI: 10.3390/s23249727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 12/06/2023] [Accepted: 12/08/2023] [Indexed: 12/24/2023]
Abstract
Skin-based wearable devices have gained significant attention due to advancements in soft materials and thin-film technologies. Nevertheless, traditional wearable electronics often entail expensive and intricate manufacturing processes and rely on metal-based substrates that are susceptible to corrosion and lack flexibility. In response to these challenges, this paper has emerged with an alternative substrate for wearable electrodes due to its cost-effectiveness and scalability in manufacturing. Paper-based electrodes offer an attractive solution with their inherent properties of high breathability, flexibility, biocompatibility, and tunability. In this study, we introduce carbon nanotube-based paper composites (CPC) electrodes designed for the continuous detection of biopotential signals, such as electrooculography (EOG), electrocardiogram (ECG), and electroencephalogram (EEG). To prevent direct skin contact with carbon nanotubes, we apply various packaging materials, including polydimethylsiloxane (PDMS), Eco-flex, polyimide (PI), and polyurethane (PU). We conduct a comparative analysis of their signal-to-noise ratios in comparison to conventional gel electrodes. Our system demonstrates real-time biopotential monitoring for continuous health tracking, utilizing CPC in conjunction with a portable data acquisition system. The collected data are analyzed to provide accurate heart rates, respiratory rates, and heart rate variability metrics. Additionally, we explore the feasibility using CPC for sleep monitoring by collecting EEG signals.
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Affiliation(s)
- Seunghyeb Ban
- School of Engineering and Computer Science, Washington State University, Vancouver, WA 98686, USA;
| | - Chang Woo Lee
- Department of Mechanical Engineering, University of Washington, Seattle, WA 98195, USA; (C.W.L.); (J.-H.C.)
| | - Vigneshwar Sakthivelpathi
- Department of Mechanical Engineering, University of Washington, Seattle, WA 98195, USA; (C.W.L.); (J.-H.C.)
| | - Jae-Hyun Chung
- Department of Mechanical Engineering, University of Washington, Seattle, WA 98195, USA; (C.W.L.); (J.-H.C.)
| | - Jong-Hoon Kim
- School of Engineering and Computer Science, Washington State University, Vancouver, WA 98686, USA;
- Department of Mechanical Engineering, University of Washington, Seattle, WA 98195, USA; (C.W.L.); (J.-H.C.)
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Li Z, Chen X, Tang S, Xiang D, Harkin‐Jones E, Chen Y, Zhao C, Li H, Wang P, Zhou L, Wang J, Li Y, Wu Y. Enhanced sensing performance of flexible strain sensors prepared from biaxially stretched carbon nanotubes/polydimethylsiloxane nanocomposites. POLYM ENG SCI 2023. [DOI: 10.1002/pen.26281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Affiliation(s)
- Zhen Li
- School of New Energy and Materials Southwest Petroleum University Chengdu China
| | - Xiaoyu Chen
- School of New Energy and Materials Southwest Petroleum University Chengdu China
| | - Shuai Tang
- Sichuan Aerospace Changzheng Equipment Manufacturing Co., Ltd. Chengdu China
| | - Dong Xiang
- School of New Energy and Materials Southwest Petroleum University Chengdu China
- The Center of Functional Materials for Working Fluids of Oil and Gas Field, Sichuan Engineering Technology Research Center of Basalt Fiber Composites Development and Application Southwest Petroleum University Chengdu China
- Collaborative Scientific Innovation Platform of Universities in Sichuan for Basalt Fiber Southwest Petroleum University Chengdu China
| | | | - Yong Chen
- Sichuan Aerospace Changzheng Equipment Manufacturing Co., Ltd. Chengdu China
| | - Chunxia Zhao
- School of New Energy and Materials Southwest Petroleum University Chengdu China
- The Center of Functional Materials for Working Fluids of Oil and Gas Field, Sichuan Engineering Technology Research Center of Basalt Fiber Composites Development and Application Southwest Petroleum University Chengdu China
- Collaborative Scientific Innovation Platform of Universities in Sichuan for Basalt Fiber Southwest Petroleum University Chengdu China
| | - Hui Li
- School of New Energy and Materials Southwest Petroleum University Chengdu China
- The Center of Functional Materials for Working Fluids of Oil and Gas Field, Sichuan Engineering Technology Research Center of Basalt Fiber Composites Development and Application Southwest Petroleum University Chengdu China
- Collaborative Scientific Innovation Platform of Universities in Sichuan for Basalt Fiber Southwest Petroleum University Chengdu China
| | - Ping Wang
- School of New Energy and Materials Southwest Petroleum University Chengdu China
| | - Lihua Zhou
- School of New Energy and Materials Southwest Petroleum University Chengdu China
| | - Junjie Wang
- Department of Civil Engineering Tsinghua University Beijing China
| | - Yuntao Li
- School of New Energy and Materials Southwest Petroleum University Chengdu China
| | - Yuanpeng Wu
- School of New Energy and Materials Southwest Petroleum University Chengdu China
- The Center of Functional Materials for Working Fluids of Oil and Gas Field, Sichuan Engineering Technology Research Center of Basalt Fiber Composites Development and Application Southwest Petroleum University Chengdu China
- Collaborative Scientific Innovation Platform of Universities in Sichuan for Basalt Fiber Southwest Petroleum University Chengdu China
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5
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Optoplasmonic biosensor for lung cancer telediagnosis: Design and simulation analysis. SENSORS INTERNATIONAL 2023. [DOI: 10.1016/j.sintl.2023.100232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
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Zhang J, Chen M, Peng Y, Li S, Han D, Ren S, Qin K, Li S, Han T, Wang Y, Gao Z. Wearable biosensors for human fatigue diagnosis: A review. Bioeng Transl Med 2023; 8:e10318. [PMID: 36684114 PMCID: PMC9842037 DOI: 10.1002/btm2.10318] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 03/11/2022] [Accepted: 03/13/2022] [Indexed: 02/01/2023] Open
Abstract
Fatigue causes deleterious effects to physical and mental health of human being and may cause loss of lives. Therefore, the adverse effects of fatigue on individuals and the society are massive. With the ever-increasing frequency of overtraining among modern military and sports personnel, timely, portable and accurate fatigue diagnosis is essential to avoid fatigue-induced accidents. However, traditional detection methods require complex sample preparation and blood sampling processes, which cannot meet the timeliness and portability of fatigue diagnosis. With the development of flexible materials and biosensing technology, wearable biosensors have attracted increased attention to the researchers. Wearable biosensors collect biomarkers from noninvasive biofluids, such as sweat, saliva, and tears, followed by biosensing with the help of biosensing modules continuously and quantitatively. The detection signal can then be transmitted through wireless communication modules that constitute a method for real-time understanding of abnormality. Recent developments of wearable biosensors are focused on miniaturized wearable electrochemistry and optical biosensors for metabolites detection, of which, few have exhibited satisfactory results in medical diagnosis. However, detection performance limits the wide-range applicability of wearable fatigue diagnosis. In this article, the application of wearable biosensors in fatigue diagnosis has been discussed. In fact, exploration of the composition of different biofluids and their potential toward fatigue diagnosis have been discussed here for the very first time. Moreover, discussions regarding the current bottlenecks in wearable fatigue biosensors and the latest advancements in biochemical reaction and data communication modules have been incorporated herein. Finally, the main challenges and opportunities were discussed for wearable fatigue diagnosis in the future.
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Affiliation(s)
- Jingyang Zhang
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety Institute of Environmental and Operational Medicine Tianjin P.R. China
| | - Mengmeng Chen
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety Institute of Environmental and Operational Medicine Tianjin P.R. China
| | - Yuan Peng
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety Institute of Environmental and Operational Medicine Tianjin P.R. China
| | - Shuang Li
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety Institute of Environmental and Operational Medicine Tianjin P.R. China
| | - Dianpeng Han
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety Institute of Environmental and Operational Medicine Tianjin P.R. China
| | - Shuyue Ren
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety Institute of Environmental and Operational Medicine Tianjin P.R. China
| | - Kang Qin
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety Institute of Environmental and Operational Medicine Tianjin P.R. China
| | - Sen Li
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety Institute of Environmental and Operational Medicine Tianjin P.R. China
| | - Tie Han
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety Institute of Environmental and Operational Medicine Tianjin P.R. China
| | - Yu Wang
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety Institute of Environmental and Operational Medicine Tianjin P.R. China
| | - Zhixian Gao
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety Institute of Environmental and Operational Medicine Tianjin P.R. China
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Ramasubramanian B, Reddy VS, Chellappan V, Ramakrishna S. Emerging Materials, Wearables, and Diagnostic Advancements in Therapeutic Treatment of Brain Diseases. BIOSENSORS 2022; 12:1176. [PMID: 36551143 PMCID: PMC9775999 DOI: 10.3390/bios12121176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/07/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
Among the most critical health issues, brain illnesses, such as neurodegenerative conditions and tumors, lower quality of life and have a significant economic impact. Implantable technology and nano-drug carriers have enormous promise for cerebral brain activity sensing and regulated therapeutic application in the treatment and detection of brain illnesses. Flexible materials are chosen for implantable devices because they help reduce biomechanical mismatch between the implanted device and brain tissue. Additionally, implanted biodegradable devices might lessen any autoimmune negative effects. The onerous subsequent operation for removing the implanted device is further lessened with biodegradability. This review expands on current developments in diagnostic technologies such as magnetic resonance imaging, computed tomography, mass spectroscopy, infrared spectroscopy, angiography, and electroencephalogram while providing an overview of prevalent brain diseases. As far as we are aware, there hasn't been a single review article that addresses all the prevalent brain illnesses. The reviewer also looks into the prospects for the future and offers suggestions for the direction of future developments in the treatment of brain diseases.
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Affiliation(s)
- Brindha Ramasubramanian
- Department of Mechanical Engineering, Center for Nanofibers & Nanotechnology, National University of Singapore, Singapore 117574, Singapore
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), #08-03, 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore
| | - Vundrala Sumedha Reddy
- Department of Mechanical Engineering, Center for Nanofibers & Nanotechnology, National University of Singapore, Singapore 117574, Singapore
| | - Vijila Chellappan
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), #08-03, 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, Center for Nanofibers & Nanotechnology, National University of Singapore, Singapore 117574, Singapore
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Wang R, Bai J, Zhu X, Li Z, Cheng L, Zhang G, Zhang W. A PDMS-based microneedle array electrode for long-term ECG recording. Biomed Microdevices 2022; 24:27. [PMID: 35953589 DOI: 10.1007/s10544-022-00626-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/01/2022] [Indexed: 11/26/2022]
Abstract
To acquire high-quality electrocardiogram (ECG) signals, traditional Ag/AgCl wet electrodes used together with conductive gel can effectively reduce electrode-skin interface impedance (EII) in a short term. However, their weaknesses of poor flexibility and instability can no longer meet the long-term monitoring requirements of intelligent wearable devices. Owing to the flexible dry electrode without conductive gel, it is a good choice to solve the critical problem on drying-out of conductive gel. Therefore, we develop a flexible microneedle array electrode (FMAE) based on polydimethylsiloxane (PDMS) substrate, which obtains reliable bioelectrical signals by way of penetrating into the stratum corneum (SC) of the skin. The fabrication process, including silicon mold, twice PDMS shape-transferring and encapsulation, has advantages of low cost, repeatable production and good biocompatibility. Afterwards, by comparing the performance with different electrodes, impedance test results indicate that the impedance of FMAE are smaller and more stable, and ECG tests in long term and at resting/jogging states also verify that FMAE can obtain durable, stable and reliable signals. In conclusion, FMAE is promising in long-term ECG monitoring.
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Affiliation(s)
- Renxin Wang
- State Key Laboratory of Dynamic Testing Technology, North University of China, Taiyuan, 030051, China
- Science and Technology On Sonar Laboratory, Hangzhou, 310000, China
| | - Jianxin Bai
- State Key Laboratory of Dynamic Testing Technology, North University of China, Taiyuan, 030051, China
| | - Xiaohang Zhu
- State Key Laboratory of Dynamic Testing Technology, North University of China, Taiyuan, 030051, China
| | - Zhaodong Li
- State Key Laboratory of Dynamic Testing Technology, North University of China, Taiyuan, 030051, China
| | - Lixia Cheng
- State Key Laboratory of Dynamic Testing Technology, North University of China, Taiyuan, 030051, China
| | - Guojun Zhang
- State Key Laboratory of Dynamic Testing Technology, North University of China, Taiyuan, 030051, China
| | - Wendong Zhang
- State Key Laboratory of Dynamic Testing Technology, North University of China, Taiyuan, 030051, China.
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Nie Z, Kwak JW, Han M, Rogers JA. Mechanically Active Materials and Devices for Bio-Interfaced Pressure Sensors-A Review. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022:e2205609. [PMID: 35951770 DOI: 10.1002/adma.202205609] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/31/2022] [Indexed: 06/15/2023]
Abstract
Pressures generated by external forces or by internal body processes represent parameters of critical importance in diagnosing physiological health and in anticipating injuries. Examples span intracranial hypertension from traumatic brain injuries, high blood pressure from poor diet, pressure-induced skin ulcers from immobility, and edema from congestive heart failure. Pressures measured on the soft surfaces of vital organs or within internal cavities of the body can provide essential insights into patient status and progression. Challenges lie in the development of high-performance pressure sensors that can softly interface with biological tissues to enable safe monitoring for extended periods of time. This review focuses on recent advances in mechanically active materials and structural designs for classes of soft pressure sensors that have proven uses in these contexts. The discussions include applications of such sensors as implantable and wearable systems, with various unique capabilities in wireless continuous monitoring, minimally invasive deployment, natural degradation in biofluids, and/or multiplexed spatiotemporal mapping. A concluding section summarizes challenges and future opportunities for this growing field of materials and biomedical research.
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Affiliation(s)
- Zhongyi Nie
- Department of Biomedical Engineering, College of Future Technology, Peking University, Beijing, 100871, China
| | - Jean Won Kwak
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL, 60208, USA
- Department of Mechanical Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Mengdi Han
- Department of Biomedical Engineering, College of Future Technology, Peking University, Beijing, 100871, China
| | - John A Rogers
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL, 60208, USA
- Department of Mechanical Engineering, Northwestern University, Evanston, IL, 60208, USA
- Departments of Biomedical Engineering, Materials Science and Engineering, Neurological Surgery, Chemistry, and Electrical Engineering and Computer Science, Northwestern University, Evanston, IL, 60208, USA
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High-Sensitivity Flexible Piezoresistive Pressure Sensor Using PDMS/MWNTS Nanocomposite Membrane Reinforced with Isopropanol for Pulse Detection. SENSORS 2022; 22:s22134765. [PMID: 35808262 PMCID: PMC9269151 DOI: 10.3390/s22134765] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/17/2022] [Accepted: 06/18/2022] [Indexed: 02/04/2023]
Abstract
Flexible pressure sensors with high sensitivity and good linearity are in high demand to meet the long-term and accurate detection requirements for pulse detection. In this study, we propose a composite membrane pressure sensor using polydimethylsiloxane (PDMS) and multiwalled carbon nanotubes (MWNTS) reinforced with isopropanol prepared by solution blending and a self-made 3D-printed mold. The device doped with isopropanol had a higher sensitivity and linearity owning to the construction of additional conductive paths. The optimal conditions for realizing a high-performance pressure sensor are a multiwalled carbon nanotube mass ratio of 7% and a composite membrane thickness of 490 μm. The membrane achieves a high linear sensitivity of −57.07 kΩ∙kPa−1 and a linear fitting correlation coefficient of 98.78% in the 0.13~5.2 kPa pressure range corresponding to pulse detection. Clearly, this device has great potential for application in pulse detection.
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Chopra H, Bibi S, Mishra AK, Tirth V, Yerramsetty SV, Murali SV, Ahmad SU, Mohanta YK, Attia MS, Algahtani A, Islam F, Hayee A, Islam S, Baig AA, Emran TB. Nanomaterials: A Promising Therapeutic Approach for Cardiovascular Diseases. JOURNAL OF NANOMATERIALS 2022; 2022:1-25. [DOI: 10.1155/2022/4155729] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Cardiovascular diseases (CVDs) are a primary cause of death globally. A few classic and hybrid treatments exist to treat CVDs. However, they lack in both safety and effectiveness. Thus, innovative nanomaterials for disease diagnosis and treatment are urgently required. The tiny size of nanomaterials allows them to reach more areas of the heart and arteries, making them ideal for CVDs. Atherosclerosis causes arterial stenosis and reduced blood flow. The most common treatment is medication and surgery to stabilize the disease. Nanotechnologies are crucial in treating vascular disease. Nanomaterials may be able to deliver medications to lesion sites after being infused into the circulation. Newer point-of-care devices have also been considered together with nanomaterials. For example, this study will look at the use of nanomaterials in imaging, diagnosing, and treating CVDs.
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Affiliation(s)
- Hitesh Chopra
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India
| | - Shabana Bibi
- Yunnan Herbal Laboratory, College of Ecology and Environmental Sciences, Yunnan University, Kunming, 650091 Yunnan, China
- The International Joint Research Center for Sustainable Utilization of Cordyceps Bioresources in China and Southeast Asia, Yunnan University, Kunming, 650091 Yunnan, China
| | - Awdhesh Kumar Mishra
- Department of Biotechnology, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, Republic of Korea
| | - Vineet Tirth
- Mechanical Engineering Department, College of Engineering, King Khalid University, Abha, 61421 Asir, Saudi Arabia
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Guraiger, Abha, 61413 Asir, P.O. Box No. 9004, Saudi Arabia
| | - Sree Vandana Yerramsetty
- Department of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, Tamil Nadu 613402, India
| | - Sree Varshini Murali
- Department of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, Tamil Nadu 613402, India
| | - Syed Umair Ahmad
- Department of Bioinformatics, Hazara University, Mansehra, Pakistan
| | - Yugal Kishore Mohanta
- Department of Applied Biology, University of Science and Technology Meghalaya, Ri-Bhoi 793101, India
| | - Mohamed S. Attia
- Department of Pharmaceutics, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Ali Algahtani
- Mechanical Engineering Department, College of Engineering, King Khalid University, Abha, 61421 Asir, Saudi Arabia
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Guraiger, Abha, 61413 Asir, P.O. Box No. 9004, Saudi Arabia
| | - Fahadul Islam
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
| | - Abdul Hayee
- Department of Immunology, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama, Japan
| | - Saiful Islam
- Civil Engineering Department, College of Engineering, King Khalid University, Abha, 61421 Asir, Saudi Arabia
| | - Atif Amin Baig
- Unit of Biochemistry, Faculty of Medicine, Universiti Sultan Zainal Abidin, Malaysia
| | - Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong 4381, Bangladesh
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Cheng Y, Wang K, Xu H, Li T, Jin Q, Cui D. Recent developments in sensors for wearable device applications. Anal Bioanal Chem 2021; 413:6037-6057. [PMID: 34389877 DOI: 10.1007/s00216-021-03602-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 07/26/2021] [Accepted: 08/04/2021] [Indexed: 01/23/2023]
Abstract
Wearable devices are a new means of human-computer interaction with different functions, underlying principles, and forms. They have been widely used in the medical and health fields, in applications including physiological signal monitoring; sports; and environmental detection, while subtly affecting people's lives and work. Wearable sensors as functional components of wearable devices have become a research focus. In this review, we systematically summarize recent progress in the development of wearable sensors and related devices. Wearable sensors in medical health applications, according to the principle of measurement, are divided into physical and chemical quantity detection. These sensors can monitor and measure specific parameters, thereby enabling continuously improvements in the quality and feasibility of medical treatment. Through the detection of human movement, such as breathing, heartbeat, or bending, wearable sensors can evaluate body movement and monitor an individual's physical performance and health status. Wearable devices detecting aspects of the environment while maintaining high adaptability to the human body can be used to evaluate environmental quality and obtain more accurate environmental information. The ultimate goal of this review is to provide new insights and directions for the future development and broader application of wearable devices in various fields.Graphical abstract.
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Affiliation(s)
- Yuemeng Cheng
- Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Engineering Research Center for Intelligent diagnosis and treatment instrument, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Kan Wang
- Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Engineering Research Center for Intelligent diagnosis and treatment instrument, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, China.
| | - Hao Xu
- School of Naval Architecture, Ocean & Civil Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Tangan Li
- Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Engineering Research Center for Intelligent diagnosis and treatment instrument, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Qinghui Jin
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China.,Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo, 315211, China
| | - Daxiang Cui
- Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Engineering Research Center for Intelligent diagnosis and treatment instrument, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, China
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Bijender, Kumar A. Flexible and wearable capacitive pressure sensor for blood pressure monitoring. SENSING AND BIO-SENSING RESEARCH 2021. [DOI: 10.1016/j.sbsr.2021.100434] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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14
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Peng Y, Zhou J, Song X, Pang K, Samy A, Hao Z, Wang J. A Flexible Pressure Sensor with Ink Printed Porous Graphene for Continuous Cardiovascular Status Monitoring. SENSORS (BASEL, SWITZERLAND) 2021; 21:E485. [PMID: 33445532 PMCID: PMC7828094 DOI: 10.3390/s21020485] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/05/2021] [Accepted: 01/09/2021] [Indexed: 01/01/2023]
Abstract
Flexible electronics with continuous monitoring ability a extensively preferred in various medical applications. In this work, a flexible pressure sensor based on porous graphene (PG) is proposed for continuous cardiovascular status monitoring. The whole sensor is fabricated in situ by ink printing technology, which grants it the potential for large-scale manufacture. Moreover, to enhance its long-term usage ability, a polyethylene terephthalate/polyethylene vinylacetate (PET/EVA)-laminated film is employed to protect the sensor from unexpected shear forces on the skin surface. The sensor exhibits great sensitivity (53.99/MPa), high resolution (less than 0.3 kPa), wide detecting range (0.3 kPa to 1 MPa), desirable robustness, and excellent repeatability (1000 cycles). With the assistance of the proposed pressure sensor, vital cardiovascular conditions can be accurately monitored, including heart rate, respiration rate, pulse wave velocity, and blood pressure. Compared to other sensors based on self-supporting 2D materials, this sensor can endure more complex environments and has enormous application potential for the medical community.
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Affiliation(s)
- Yuxin Peng
- Department of Sports Science, Zhejiang University, Hangzhou 310058, China; (Y.P.); (J.Z.); (Z.H.); (J.W.)
| | - Jingzhi Zhou
- Department of Sports Science, Zhejiang University, Hangzhou 310058, China; (Y.P.); (J.Z.); (Z.H.); (J.W.)
| | - Xian Song
- Department of Sports Science, Zhejiang University, Hangzhou 310058, China; (Y.P.); (J.Z.); (Z.H.); (J.W.)
| | - Kai Pang
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China;
| | - Akram Samy
- Department of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China;
| | - Zengming Hao
- Department of Sports Science, Zhejiang University, Hangzhou 310058, China; (Y.P.); (J.Z.); (Z.H.); (J.W.)
| | - Jian Wang
- Department of Sports Science, Zhejiang University, Hangzhou 310058, China; (Y.P.); (J.Z.); (Z.H.); (J.W.)
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