Publications by authors named "J P Salvage"
Pristine TiCT MXene Enables Flexible and Transparent Electrochemical Sensors.
ACS Appl Mater Interfaces
February 2024
In the era of the internet of things, there exists a pressing need for technologies that meet the stringent demands of wearable, self-powered, and seamlessly integrated devices. Current approaches to developing MXene-based electrochemical sensors involve either rigid or opaque components, limiting their use in niche applications. This study investigates the potential of pristine TiCT electrodes for flexible and transparent electrochemical sensing, achieved through an exploration of how material characteristics (flake size, flake orientation, film geometry, and uniformity) impact the electrochemical activity of the outer sphere redox probe ruthenium hexamine using cyclic voltammetry.
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- - The study challenges the traditional view of phyllosilicate minerals, like mica and chlorite, by demonstrating that exfoliated nanosheets from these materials can display electronic activity, rather than being simply inactive and inert.
- - Through advanced techniques like electron diffraction and spectroscopy, researchers observed a unique spectral fingerprint that varies with the size and number of layers of the nanosheets, revealing significant changes in their electronic properties.
- - The findings indicate that as the surface area of these nanosheets increases, their bandgap decreases due to a quantum confinement effect, which suggests they can behave like semiconductors and exhibit enhanced catalytic activity for hydrogen production.
Tuneable infrared properties, such as transparency and emissivity, are highly desirable for a range of applications, including thermal windows and emissive cooling. Here, we demonstrate the use of carbon nanotube networks spray-deposited onto an ionic liquid-infused membrane to fabricate devices with electrochromic modulation in the mid-infrared spectrum, facilitating control of emissivity and apparent temperature. Such modulation is enabled by intraband transitions in unsorted single-walled carbon nanotube networks, allowing the use of scalable nanotube inks for printed devices.
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- Explosive percolation is a phenomenon where a network becomes highly conductive with the sudden formation of new pathways, making it an important area of study in materials science.
- In this research, graphene oxide and synthetic polymer latex are combined to create low percolation threshold composites, enhancing electrical conductivity through the formation of organized conductive pathways.
- The process of reducing graphene oxide at lower temperatures not only modifies the polymer but also creates crosslinking agents, resulting in composites that outperform traditional dense networks in terms of conductivity.