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Open accessJournal ArticleDOI: 10.1038/S41578-021-00299-8

The future of near-field communication-based wireless sensing.

02 Mar 2021-Nature Reviews Materials (Springer Science and Business Media LLC)-Vol. 6, Iss: 4, pp 1-3
Abstract: Near-field communication emerged as a high-security, wireless, short-range, data exchange technology nearly two decades ago; its ability to simultaneously transfer power and data between devices offers exciting opportunities for the design of miniature, battery-free and disposable sensing systems in health care and food quality monitoring. Near-field communication (NFC) emerged as a high-security, wireless, short-range, data exchange technology nearly two decades ago; its ability to simultaneously transfer power and data between devices offers exciting opportunities for the design of miniature, battery-less and disposable sensing systems in healthcare and food quality monitoring.

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7 results found

Open accessDOI: 10.1038/S41928-021-00663-0
11 Nov 2021-
Abstract: Wearable and implantable sensors can be linked together to create multi-node wireless networks that could be of use in the development of advanced healthcare monitoring technologies. Such body area networks require secure, seamless and versatile communication links that can operate across the complex human body, but they typically suffer from short ranges, low power or the need for direct-connection terminals. Here we show that textile-integrated metamaterials can be used to drive long-distance near-field communication (NFC)-based magneto-inductive waves along and between multiple objects. The metamaterials are built from arrays of discrete, anisotropic magneto-inductive elements, creating a mechanically flexible system capable of battery-free communication among NFC-enabled devices that are placed anywhere close to the network. Our approach offers a secure and on-demand body area network that has the potential for straightforward expansion and can span across different pieces of clothing, objects and people. Textile-integrated metamaterials can be used to drive long-distance near-field-communication-based magneto-inductive waves along and between multiple objects, creating a secure and on-demand body area network.

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Topics: Body area network (62%), Wireless network (52%), Metamaterial (52%)

1 Citations

Open accessJournal ArticleDOI: 10.1016/J.BIOS.2021.113765
Lei Mou1, Lei Mou2, Yong Xia1, Xingyu Jiang1  +1 moreInstitutions (2)
Abstract: Wearable epidermal patch can seamlessly monitor biological signals in real-time. Here, we report a liquid metal-polymer conductor-based wireless epidermal patch. The epidermal patch is made of a new conductive material called liquid metal-polymer conductors (LMPC). LMPC is made by casting and peeling off polymers from patterned liquid metal particles. Our printable conductors present good stretchability, repeatability, and biocompatibility. We fabricate LMPC-based antenna and wire, which achieves wireless signal communication and power supply. To demonstrate the capability of our LMPC-based antenna and wire, we fabricate an epidermal patch to analyze metabolites, electrolytes, and urea in sweat. When a portable device is close to the epidermal sensor, the device can power and read the sensor through LMPC-based antenna. The epidermal patch exhibited good analytical performance for sweat analysis with a low limit of detection, fast response time, and multiplex detection capabilities. This epidermal patch opens the possibility for a broad range of non-invasive diagnostic tools that can be used for health monitoring in the general population.

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Topics: Population (51%)

Journal ArticleDOI: 10.1016/J.TIBTECH.2021.04.011
Abstract: Blockchain, the technology behind bitcoin, has stimulated global conversation around digital decentralization to connect societies and economies. Connected low-cost sensors within Internet of Things (IoT) networks may soon perform measurements, exchange data, and make decisions automatically over decentralized networks; these systems could improve healthcare, the quality of goods, and supply chain efficiency.

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Open accessJournal ArticleDOI: 10.1007/S43546-021-00136-8
01 Jan 2021-
Abstract: Digitalization and big data are continuing to revolutionize industries impacting the global economy, environment, and society as a whole. The retail industry is not an exception and is facing a paradigm shift in many aspects of its operations. One of the latest innovations in this industry is the development of unmanned stores concepts and business models. These novel business models are mostly used in the grocery stores segment with an impetus to eliminate the need for check-out lines and to create more efficiencies in the whole process of the shopping experience. Because of the disruptive nature of this business model, it is important to research the effects of its expansion into society. In this article, we are making a critical analysis of the sustainability impact of unmanned stores and assess the strategic direction and growth strategies of major corporations and organizations within the value chain. We used an unambiguous and straightforward questionnaire as the research tool and the results show grocery as the current target for expansion, however, future expectations from business developers lean heavily towards coffee and books. Interestingly, the investment logic for expected benefits from the participants seemed to be biased towards efficiencies and the value chain benefits seemed to mostly come from the use of big data and data analytics. The most important use of the data was associated with the dynamic pricing models. Additionally, our study shows interesting insight for example to the growth segments, the role of sustainability, and barriers of entry.

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Topics: Business model (58%), Value chain (56%), Big data (53%) ... show more

Open accessJournal ArticleDOI: 10.1016/J.TRAC.2021.116424
Tugba Ozer1, Charles S. Henry2Institutions (2)
Abstract: The importance of user-friendly, inexpensive, sensitive, and selective detection of viruses has been highlighted again due to the recent Coronavirus disease 2019 (COVID-19) pandemic. Among the analytical tools, paper-based devices (PADs) have become a leading alternative for point-of-care (POC) testing. In this review, we discuss the recent development strategies and applications in nucleic acid-based, antibody/antigen-based and other affinity-based PADs using optical and electrochemical detection methods for sensing viruses. In addition, advantages and drawbacks of presented PADs are identified. Current state and insights towards future perspectives are presented regarding developing POC diagnosis platform for COVID-19. This review considers state-of-the-art technologies for further development and improvement in PADs performance for virus detection.

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10 results found

Journal ArticleDOI: 10.1038/NATURE16492
Seung-Kyun Kang1, Rory K.J. Murphy2, Suk Won Hwang3, Seungmin Lee1  +26 moreInstitutions (7)
04 Feb 2016-Nature
Abstract: Many procedures in modern clinical medicine rely on the use of electronic implants in treating conditions that range from acute coronary events to traumatic injury. However, standard permanent electronic hardware acts as a nidus for infection: bacteria form biofilms along percutaneous wires, or seed haematogenously, with the potential to migrate within the body and to provoke immune-mediated pathological tissue reactions. The associated surgical retrieval procedures, meanwhile, subject patients to the distress associated with re-operation and expose them to additional complications. Here, we report materials, device architectures, integration strategies, and in vivo demonstrations in rats of implantable, multifunctional silicon sensors for the brain, for which all of the constituent materials naturally resorb via hydrolysis and/or metabolic action, eliminating the need for extraction. Continuous monitoring of intracranial pressure and temperature illustrates functionality essential to the treatment of traumatic brain injury; the measurement performance of our resorbable devices compares favourably with that of non-resorbable clinical standards. In our experiments, insulated percutaneous wires connect to an externally mounted, miniaturized wireless potentiostat for data transmission. In a separate set-up, we connect a sensor to an implanted (but only partially resorbable) data-communication system, proving the principle that there is no need for any percutaneous wiring. The devices can be adapted to sense fluid flow, motion, pH or thermal characteristics, in formats that are compatible with the body's abdomen and extremities, as well as the deep brain, suggesting that the sensors might meet many needs in clinical medicine.

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513 Citations

Open accessJournal ArticleDOI: 10.1002/ADFM.201604373
Abstract: Development of unconventional technologies for wireless collection, storage and analysis of quantitative, clinically relevant information on physiological status is of growing interest. Soft, biocompatible systems are widely regarded as important because they facilitate mounting on external (e.g. skin) and internal (e.g. heart, brain) surfaces of the body. Ultra-miniaturized, lightweight and battery-free devices have the potential to establish complementary options in bio-integration, where chronic interfaces (i.e. months) are possible on hard surfaces such as the fingernails and the teeth, with negligible risk for irritation or discomfort. Here we report materials and device concepts for flexible platforms that incorporate advanced optoelectronic functionality for applications in wireless capture and transmission of photoplethysmograms, including quantitative information on blood oxygenation, heart rate and heart rate variability. Specifically, reflectance pulse oximetry in conjunction with near-field communication (NFC) capabilities enables operation in thin, miniaturized flexible devices. Studies of the material aspects associated with the body interface, together with investigations of the radio frequency characteristics, the optoelectronic data acquisition approaches and the analysis methods capture all of the relevant engineering considerations. Demonstrations of operation on various locations of the body and quantitative comparisons to clinical gold standards establish the versatility and the measurement accuracy of these systems, respectively.

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186 Citations

Open accessJournal ArticleDOI: 10.1038/S41746-017-0009-X
Stephen P. Lee, Grace Ha1, Donald E. Wright, Yinji Ma2  +14 moreInstitutions (3)
25 Jan 2018-
Abstract: Contemporary cardiac and heart rate monitoring devices capture physiological signals using optical and electrode-based sensors. However, these devices generally lack the form factor and mechanical flexibility necessary for use in ambulatory and home environments. Here, we report an ultrathin (~1 mm average thickness) and highly flexible wearable cardiac sensor (WiSP) designed to be minimal in cost (disposable), light weight (1.2 g), water resistant, and capable of wireless energy harvesting. Theoretical analyses of system-level bending mechanics show the advantages of WiSP’s flexible electronics, soft encapsulation layers and bioadhesives, enabling intimate skin coupling. A clinical feasibility study conducted in atrial fibrillation patients demonstrates that the WiSP device effectively measures cardiac signals matching the Holter monitor, and is more comfortable. WiSP’s physical attributes and performance results demonstrate its utility for monitoring cardiac signals during daily activity, exertion and sleep, with implications for home-based care. A highly flexible, low-power wearable sensor that harvests energy and monitors cardiac signals has been developed by Lee et al. The team was led by Dr. Roozbeh Ghaffari and co-workers at MC10 Inc. and Northwestern University’s Center for Bio-Integrated Electronics at the Simpson & Querrey Institute, in collaboration with the Massachusetts General Hospital and Tsinghua University. The novel wearable sensors measure cardiac signals comparable in signal fidelity to those achievable with expensive monitoring systems used in hospitals. Wearable health-care solutions are fundamentally changing the way we monitor our well-being at all times of the day, no matter whether we are asleep at home or busy at work. The sensors reported here are lightweight, inexpensive to manufacture, robust to everyday use, and capable of wireless data transmission and energy harvesting to and from a smartphone. The approach proved successful for measuring episodic electrocardiograms (ECG) and continuous heart rate signals with significantly higher patient comfort scores compared to standard Holter monitors in an initial pilot study conducted at the Massachusetts General Hospital (MGH).

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Topics: Wearable computer (52%)

92 Citations

Open accessJournal ArticleDOI: 10.1126/SCIADV.AAW0873
Hao Zhang1, Philipp Gutruf1, Philipp Gutruf2, Kathleen Meacham3  +19 moreInstitutions (7)
01 Mar 2019-Science Advances
Abstract: Monitoring regional tissue oxygenation in animal models and potentially in human subjects can yield insights into the underlying mechanisms of local O2-mediated physiological processes and provide diagnostic and therapeutic guidance for relevant disease states. Existing technologies for tissue oxygenation assessments involve some combination of disadvantages in requirements for physical tethers, anesthetics, and special apparatus, often with confounding effects on the natural behaviors of test subjects. This work introduces an entirely wireless and fully implantable platform incorporating (i) microscale optoelectronics for continuous sensing of local hemoglobin dynamics and (ii) advanced designs in continuous, wireless power delivery and data output for tether-free operation. These features support in vivo, highly localized tissue oximetry at sites of interest, including deep brain regions of mice, on untethered, awake animal models. The results create many opportunities for studying various O2-mediated processes in naturally behaving subjects, with implications in biomedical research and clinical practice.

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59 Citations

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