Flexible electronics has emerged as a promising field for the development of electronic devices with applications in wearables, biomedical sensors, and edible electronics. Biomaterials play crucial role fabricating flexible substrates, utilization polymer blends offers exciting possibilities tuning mechanical chemical properties. This paper highlights potential novel blend based on ethyl cellulose (EC) hydroxypropyl (HPC) fabrication substrates By blending two ethers, it is possible to tune...

Abstract Today, the key methodology to study in vitro or vivo electrical activity a population of electrogenic cells, under physiological pathological conditions, is by using microelectrode array (MEA). While significant efforts have been devoted develop nanostructured MEAs for improving electrophysiological investigation neurons and cardiomyocytes, data on recording from neuroendocrine cells with MEA technology are scarce owing their weaker signals. Disordered silicon nanowires (SiNWs)...

The need of cheap and easy to use biosensors for rapid diagnostics is a crucial challenge in medicine: indeed, devices must offer multiple properties such as fast response, high sensitivity, reduced sample processing, etc. In this respect, optical remain promising class biodevices. Here we present an extensive investigation the surface silver-coated zinc oxide disordered nanostructures efficient biosensing platform detect complex organic profiles via Raman spectroscopy. particular, combine...

Fluoride-based mouthwashes and gels are preventive measures in countering demineralization caries but, modifying environmental acidity, can reduce the wet corrosion resistance of orthodontic alloys. To evaluate chemical stability, vitro experiments were conducted on stainless steel nickel–titanium wires, weighed before after immersion household fluorinated gels, measuring weight variations elution metal ions from acid phenomena. Elution samples analyzed by inductively coupled plasma mass...

Polymer-based microfabrication approaches have been recently proposed as a low-cost alternative to traditional Capacitive Micromachined Ultrasonic Transducers (CMUT) fabrication methods. In most of the CMUT structures fabricated using such approaches, electrodes passivation is achieved by spin-coated polymer layer, with dielectric properties typically unsuitable withstand high in-cavity electrical fields. Moreover, typical layer thicknesses achievable spin-coating bring significant increase...

Abstract Astrocytes, integral components of the central nervous system (CNS), fulfill crucial roles such as maintaining ion homeostasis, providing neuroprotection, and contributing to blood-brain barrier. Their distinctive, star-like morphology is essential these functions, abnormalities in astrocyte structure are linked numerous neurological disorders. However, our understanding morphology, particularly vivo , remains limited. Traditional imaging methods, fluorescence microscopy, introduce...

Clear aligners have transformed orthodontic care by providing an aesthetic, removable alternative to traditional braces. However, their significant environmental footprint, contributing approximately 15,000 tons of plastic waste annually, poses a critical challenge. To address this issue, advancements in 4D printing introduced “smart” with shape memory properties, enabling reshaping and reducing the number required per treatment. This study focuses on ClearX aligners, innovative 4D-printed...

In avionics, safety is a crucial aspect and nondestructive testing (NDT) mandatory inspecting procedure to ensure the quality of materials before during lifetime aircraft, evaluating both status degradation different parts an aircraft. Especially in recent composites like Carbon Fibre Reinforce Plastics presence defects or disbonds caused from accidental impacts can be very dangerous for integrity wings, fuselage, etc. Among methods implemented non-destructive testing, ultrasonic most common...

Capacitive micromachined ultrasonic transducers (CMUTs) represent a class of devices widely investigated for several applications such as medical imaging and non-destructive material inspections. Although many improvements, the possibility to successfully operate on nonplanar surfaces still remains challenging. In this respect, flexible electronics can unique ally enable manufacturing ultra-thin highly conformable CMUTs. paper, we demonstrate fully fabrication process PI based CMUT device...

In this paper, we investigate the sensitivity and selectivity of lead sulphide colloidal quantum dots (CQDs) gas sensor. The benefits CQDs, compared to commercial bulk sensor gas, are a large surface/volume ratio, lower operating temperature, an easy deposition process precise control dimensions increase sensitivity. is based on chemo-resistive device with active layer composed by PbS CQDs deposited interdigitated metal contacts ligand exchange treatment. performance validated different...

To effectively control gaseous pollutants in air it is mandatory to fabricate reliable and non-expensive monitoring systems that can be easily deployed urban areas. Sensing devices based on metal oxide nanostructures offer many advantages respect bulk material detecting multiple hazardous gases such as, high stability, easy surface functionalization potentially low operating temperature. Among diverse nanostructures, ZnO nanorods obtained with cost simple process at a manufacturing...

Polymer-based CMUT microfabrication approaches allow low-cost fabrication of flexible transducers. However, they are characterized by processing limitations mainly related to the low glass transition temperature polymers, reducing possible choice materials that can be used for electrodes and in-cavity passivation layers, latter having a major impact on transducer performance reliability. In this paper, we experimentally evaluate electrical properties these two in terms dielectric dispersion...

In many activities in space, astronauts need to wear pressurized spacesuits. This equipment can protect the astronaut from hostile external environment, but at same time impede a series of movements causing discomfort and fatigue. To monitor these limitations usage spacesuits, specific sensors be tailored. Among different types devices, wearable promising candidate provide this information without adding further discomfort. The success wearables relies on possibility integrate...

Astronauts usually are forced to work in harsh environments, facing challenges related living microgravity conditions, operating outer space, or even exploring planets with unknown pathogens and viruses. To this end, it is essential provide astronauts easy tools monitoring their health status low cost fast diagnostic methods. Indeed, undetected damages occurring at one crew member can compromise an entire mission worst, cause the death for all other members. In respect, biosensors offer...

The study of brain signals is now going beyond the traditional electrogenic neuronal cells. Currently, it has been demonstrated that even non-electrogenic cells present in such as astrocytes can concur to physiological communication. Indeed, so-called tripartite synapse model, small extracellular ionic currents, exchanged between and neurons, are interest deeply understand local processes transfer storage information. Current electrodes limited by high-impedance low selectivity cannot...

Long-term space exploration requires an affordable and continuous provision of food nutrients that need to be palatable so as not upset the psycho-physical balance crewmembers. Moreover, a proper diet composed fresh enriched with key such minerals vitamins can minimize detrimental effects due microgravity in terms bones weakening; addition, absence direct incident light from sun safety shielding cosmic rays cause significant reduction vitamin D production skin. Smart greenhouses based on...

Background: Relationships between reflectivity, hardness and chemical composition of the dispersed phase, included in orthodontic composites Transbond XTTM (Trans), Light-Cure Orthodontic Paste (Leone) Bisco Ortho Bracket LC (Bisco), were investigated vitro to evaluate whether reflectivity results can be useful internal material interpretation, thus obtaining information on mechanical behaviours. Methods: Light transmission through 36 resin discs was measured with a UV/Vis spectrophotometer,...

Silicon Carbide based electronics remains the most suitable choice to replace silicon in power electronics. Especially avionics SiC devices represent a reliable solution for reducing weight and size of aircraft switching technology. However, some issues need be solved unleash full potential this kind The important challenge is related quality dielectric/SiC interface techniques implemented fabricate interface. In work, we investigate morphological electrical properties low temperature...