Advanced Sensor Research最新文献

Smart Human-Machine Interface

In article 2400086, Lin Dong and co-workers introduce a self-powered human-machine interface with piezoelectric sensors for precise body motion monitoring. Enhanced sensitivity and a novel control algorithm enable the translation of muscle signals into Morse code and control of a robotic hand to perform tasks like drinking water.

Terahertz Metasurface Biosensors

In article 2400041, Minah Seo and co-workers demonstrate the sensitive detection of acetylcholine through the integration of CuO nanoflowers with Cu nanoslots at the terahertz range. The enhanced optical hotspots by the nanoflowers resulted in sufficient signal variations, highlighting their potential for sensitive detection and quantitative analysis of trace substances.

3D Printing Optical Fiber Technology

In article 2300205, Yanhua Luo, Yushi Chu, and co-workers fabricate all solid photonic crystal optical fiber by 3D printing optical fiber technology (3DOFT). Advanced fiber sensors for sensing of multiple parameters are enabled. 3DOFT will bring more opportunities to many cutting-edge fields, e.g., aerospace, life & health, artificial intelligence, biomedicine, and radiation detection.

Graphene-Based Lab-On-a-Chip

A Graphene-based Lab-On-a-Chip (G-LOC) has been developed and validated for multiplex self-testing renal biomarkers in capillary blood. G-LOC offers over 98.7% accuracy and a user-friendly interface, enabling true at-home and digital diagnostics with lab-grade precision and instant results. It has the potential to tackle major healthcare challenges, including large-scale screening and monitoring of chronic kidney disease (CKD). More details can be found in article 2400061 by Esteban Piccinini, Omar Azzaroni, and co-workers.

Wearable biosensors are envisioned to disrupt both delivery and accessibility of healthcare by providing real-time, continuous monitoring of informative and predictive physiological markers in convenient, user-friendly, and portable designs. In recent years, there has been myriad demonstrations of biosensor-integrated clothing and skin-borne biosensor patches, enabled by device miniaturization, reduced power consumption, and new biosensing chemistries. Despite these impressive demonstrations, most consumer-grade wearables have been limited to biophotonic and biopotential sensing methods to extrapolate information such as pulse, blood oxygenation, and electrocardiograms. The only commercial example of wearable electrochemical sensing methods is for glucose monitoring. However, there is a growing interest in developing percutaneous biosensors for monitoring in interstitial fluid (ISF), which offers direct access to popular analytes such as glucose, lactate, and urea, as well as new targets like hormones, antibodies, and even medications. Herein, a brief context for the current status of wearable biosensors is provided and assess the major engineering successes and pitfalls of percutaneous biosensors over the past five years, with a view to identifying areas for further developments that will enable deployable, clinical- or consumer-grade systems.

The rapid development of the Internet of Things has introduced new challenges for miniaturized, highly integrated energy harvesters and sensors, promoting the exploration of various novel nanomaterials. Ferroelectric nanomaterials, characterized by large remanent polarization, exceptional dielectric properties, outstanding chemical stability, and diverse electricity generation capabilities, are emerging as promising candidates in a variety of fields. Possessing various mechanisms for electricity generation, including piezoelectric, pyroelectric, photovoltaic, and triboelectric effects, ferroelectric nanomaterials demonstrate their capability for harvesting and sensing multiple energies simultaneously, including light, thermal, and mechanical energies. This capability contributes to the miniaturization and high integration of electronic devices. This article reviews recent achievements in ferroelectric nanomaterials and their applications in energy harvesting and self-powered sensing. Different categories of ferroelectric nanomaterials, their ferroelectric properties, and fabrication methods are introduced. The working mechanisms and performance of ferroelectric energy harvesters and self-powered sensors are described. Additionally, future prospects are discussed.

Metal phthalocyanines (MPcs) are promising materials for electrochemical sensing due to their physicochemical properties, including redox activity, structural versatility, and chemical stability. These materials can incorporate various metals into their central core, ensuring tunable catalytic activity and enhanced sensitivity and selectivity. This makes MPcs valuable for designing advanced electrochemical sensors, which require precise and reliable performance for applications ranging from environmental monitoring to biomedical diagnostics. This review discusses the advancements in MPc-based catalysts for electrochemical sensors, focusing on their superior catalytic properties, stability under diverse operating conditions, and high functionalization potential. The unique redox behavior of the metal center in MPcs ensures improved detection capabilities of analytes like biomolecules, heavy metal ions, and environmental pollutants, positioning MPc materials as a cornerstone in future sensor technology. MPc-based sensors have diverse applications across various fields, including environmental sensing, medical diagnostics, and industrial process monitoring. Recent reports highlight the practical relevance and growing importance of MPcs in real-world applications. Challenges associated with MPc-based sensors include scalability, environmental stability, and integration into practical devices. The review concludes with a discussion on the future outlook on MPcs in the design and development of next-generation electrochemical sensors, paving the way for more efficient, cost-effective, and reliable detection technologies.

Piezoelectric-Based Ultrasound Systems

The cover image of article 2300175 by Canan Dagdeviren and co-workers depicts a 2-dimensional array of bulk piezoelectric discs embedded in a soft, flexible polymer substrate. The electromechanical surface deformation of the discs (top two) and polymer encapsulation (bottom two) is shown in the blown view of the discs, as predicted by Multiphysics COMSOL models. The modelling and experimental pipeline presented in this work provides a framework for rapid design and characterization of wearable ultrasound systems.