The increasing understanding of the advantages offered by fish and insect-like locomotion is creating a demand for muscle-like materials capable mimicking nature's mechanisms. Actuator that employ voltage, field, light, or temperature driven dimensional changes to produce forces displacements are suggesting new approaches propulsion maneuverability. Fundamental properties these presented, examples potential undersea applications examined in order assist those involved device design actuator...

TiO2 is one of the most promising candidate materials for clean-energy generation and environmental remediation. However, larger-than 3.1 eV bandgap perfectly crystalline confines its application to ultraviolet (UV) range. In this study, electronic optical properties undoped mixed-phase nanoparticles were investigated using UV inverse photoemission, low intensity X-ray photoelectron (XP), diffused reflectance spectroscopy methods. The facile solution-phase synthesized exhibited a...

Multilayer stretchable conductors (SCs) are demonstrated for the first time as an alternative cost-effective method implementing conformal and reconfigurable antennas over flexible substrates. Structurally, these SCs realized on polydimethylsiloxane (PDMS) substrate via single or double copper layers deposited around a commercially available conductive rubber. The dc measurements demonstrate stretchability of multilayer up to 25% 22.5 times larger conductivity compared standalone RF...

The growing demand for nonfossil fuel-based energy production has drawn attention to the utilization of natural proteins such as photosynthetic reaction center (RC) protein complexes harvest solar energy. current study reports on an immobilization method bind wild type Rhodobacter sphaeroides RC from primary donor side onto a Au electrode using immobilized cytochrome c (cyt c) via docking mechanism. new structure been assembled by layer-by-layer deposition carboxylic acid-terminated...

Bacterial photosynthetic reaction centers (RCs) are promising materials for solar energy harvesting, due to their high ratio of photogenerated electrons absorbed photons and long recombination time generated charges. In this work, photoactive electrodes were prepared from a bacterial RC-light-harvesting 1 (LH1) core complex, where the RC is encircled by LH1 antenna, increase light capture. A simple immobilization method was used prepare RC-LH1 layer. Herein, we demonstrate that combination...

Electronic nose technology may have the potential to substantially slow spread of contagious diseases with rapid signal indication. As our understanding infectious such as Corona Virus Disease 2019 improves, we expect electronic detect changes associated pathogenesis disease biomarkers immune response for respiratory symptoms, central nervous system injury, and/or peripheral injury in breath odor an individual. In this paper, a design was configured concentration COVID-19 simulation sample...

One of the main issues with micron-sized intracortical neural interfaces (INIs) is their long-term reliability, one major factor stemming from material failure caused by heterogeneous integration multiple materials used to realize implant. Single crystalline cubic silicon carbide (3C-SiC) a semiconductor that has been long recognized for its mechanical robustness and chemical inertness. It benefit demonstrated biocompatibility, which makes it promising candidate chronically-stable,...

Nanofiber technology is leading the revolution of wearable and provides a unique capability to fabricate smart textiles. With novel fabrication technique electrospinning, nanofibers can be fabricated then manufactured into durable conductive string for application This paper presents an electrospun nanofiber mesh-based (NF-Felt) electrode with conducting polymer coating electrochemical enzymatic glucose sensor. The surface area matrix key physical property enhanced oxidase (GOx) enzyme...

Bacterial photosynthetic reaction centers (RCs) are promising materials for solar energy harvesting, due to their high quantum efficiency. A simple approach making a photovoltaic device is apply solubilized RCs and charge carrier mediators the electrolyte of an electrochemical cell. However, adsorption analytes on electrodes can affect transfer from electrodes. In this work, devices were fabricated incorporating purple bacteria, ubiquinone-10 (Q2), cytochrome c (Cyt c) (the latter two...

Alzheimer’s disease (AD) affects a significant portion of humanity’s elderly population across the globe. Recent studies have identified Amyloid-Beta 42 (Aβ42) as key biomarker for AD. In this research, we examined feasibility using string-shaped electrodes to develop potentially wearable biosensor early detection Two types flexible electrochemical were fabricated commercial thread (25% cotton-75% polyester) and an electrospun nanofiber-based string. Decorating strings with either gold or...

Photosynthetic reaction centres (RCs) convert light into separated charges with nearly perfect quantum efficiency, and have been used to generate photocurrent. Previous work has shown that electron tunnelling rates between redox in proteins depend exponentially on the distance. In this RC from Rhodobacter sphaeroides was genetically modified aim of achieving shortest distances yet demonstrated RC's electron-accepting P site underlying graphite gold electrodes, donor Q electrodes. Opposite...

Harvesting solar energy as a carbon free source can be promising solution to the crisis and environmental pollution. Biophotovoltaics seek mimic photosynthesis harvest take advantage of low material costs, negative footprint, abundance. In current study, we report on combination zinc oxide (ZnO) nanowires with monolayers photosynthetic reaction centers which are self-assembled, via cytochrome c linker, photoactive electrode. three-probe biophotovoltaics cell, photocurrent density 5.5 μA cm-2...

Although the capacitance measurement is a common method to obtain depletion width in Schottky contact, challenging an organic junction since combination of capacitances associated with trapped charges, bulk semiconductor, and region. The authors have implemented metal-semiconductor field-effect transistor structure order estimate contact. In calculated from drain current at small drain-source voltage. result indicates nonquadratic relation between voltage width.

We designed a nickel-assisted process to obtain graphene with sheet resistance as low 80 Ω square−1 from silicon carbide films on Si wafers highly enhanced surface area. The film acts both template and source of graphitic carbon, while, simultaneously, the nickel induces porosity by forming silicides during annealing which are subsequently removed. As stand-alone electrodes in supercapacitors, these transfer-free graphene-on-chip samples show typical double-layer supercapacitive behaviour...

This letter presents a conductive polymer based electrospun-nanofibrous-membrane (ENFM) for an enzymatic electrochemical glucose sensor. The ENFM-based sensor electrode shows wide detection range from 0 to 25 mM concentration with shorter response time of less than 4 s and the sensitivity 5.11 μA/mM cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> limit 2.3 μM in buffer solution. sensing negligible change current upto 50 days. activity...

The performance of bio-photovoltaic devices with a monolayer the immobilized photosynthetic reaction center (RC) is generally low because weak light absorption and poor charge transfer between RC electrode. In this paper, new device described in which dissolved electrolyte an electrochemical cell. charges generated by illuminated are transferred to electrodes via mediators. difference rates two types mediator at electrode surfaces determines direction photocurrent device. Experimental...