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This study indicates that graphene is a promising candidate for the development of real-time nanoelectronic biosensors.
Open accessJournal ArticleDOI
Dmitry Solenov, Kirill A. Velizhanin 
30 Citations
In many applications it is important to be able to transport adsorbates on graphene in real time.
Open accessJournal ArticleDOI
01 Sep 2015-Radioengineering
91 Citations
In particular, graphene has shown proven results as an emblematic protagonist, and a real solution for a wide variety of microwave electronic devices and circuits.
Our result gave a technical milestone for the real industrial application of graphene in many application areas (not only graphene but also several two-dimensional materials such as boron nitride, transition metal di-chalcogenide, and black phosphorus).
This work provides direct evidence for how accurate and comparable characterisation of the graphene material is required for real-world graphene materials to develop graphene enabled films and proposes a measurement protocol for comparing graphene materials that can be used for international standardisation.
This approach opens a way to in-line real-time graphene metrology and is helpful in guiding the graphene growth process as we try to achieve reproducible and controllable research as w...
Thus, our work unravels the interplay between the quantum transport and electrochemical kinetics of graphene and suggests hydrogenated graphene as a potent material for sensing applications with performances going beyond previously reported graphene transistor-based sensors. Electrochemically-gated graphene field-effect transistors show promise for sensing of charged species in real time.
Based on our work, the researchers can choose graphene products (graphene paper, graphene film, graphene foam or graphene fiber) efficiently according to the research object in the future.
Open accessJournal ArticleDOI
Yin Zhang, Tapas R. Nayak, Hao Hong, Weibo Cai 
14 Jun 2012-Nanoscale
474 Citations
Although literature reports have mixed findings, we emphasize that the key question is not how toxic graphene itself is, but how to modify and functionalize it and its derivatives so that they do not exhibit acute/chronic toxicity, can be cleared from the body over time, and thereby can be best used for biomedical applications.
This work opens up a whole new vista on how to disperse graphene.

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Why are carbon nanotubes considered such a promising material for various applications in science and technology?
5 answers
Carbon nanotubes (CNTs) are highly promising materials due to their exceptional properties like high Young's modulus, electrical and thermal conductivity, and mechanical strength. These properties make CNTs attractive for applications in various fields such as biomedicine, tissue engineering, drug delivery, sensors, and energy storage. Functionalized CNTs offer a higher surface-to-volume ratio, making them suitable for carrying molecules for targeting, therapy, and imaging in biomedical applications. Moreover, CNTs can be modified to address toxicity concerns, enhancing their safety for use in diagnostics, drug delivery, and regenerative medicine. The unique combination of properties in CNTs positions them as versatile materials with immense potential for advancing science and technology across multiple disciplines.
How effective is nanofilteration in removing paracetamol from water sources?
4 answers
Nanofiltration has shown promising effectiveness in removing paracetamol from water sources. Studies have highlighted the successful removal of paracetamol along with other pharmaceuticals using loose nanofiltration membranes, with impressive removal rates ranging from 49% to 99.7%. Additionally, the use of carbon nanotubes (CNTs) has been explored for paracetamol removal, showing a high removal efficiency of 95.40% under optimal conditions. Furthermore, the adsorption of paracetamol onto copper oxide nanoparticles (CuONPs) has demonstrated high adsorption capacities, with a maximum monolayer adsorption capacity of 64.52 mg/g, indicating the potential of CuONPs as efficient adsorbents for paracetamol removal. Overall, nanofiltration, CNTs, and CuONPs present viable methods for effectively removing paracetamol from water sources, showcasing their potential in water treatment applications.
Why water in one place is more rapidly dry faster than a water in all of the places?
5 answers
Water in one place can dry faster due to specific mechanisms and structures designed for efficient drying. For instance, a place drying device with absorbing layers and rollers enhances drying efficiency by absorbing water effectively. Additionally, an intelligent water quality measuring device allows for precise water sampling without the need for personnel to approach risky areas, improving collection speed and safety. Moreover, a water retaining system for flood control in underground places ensures rapid drainage and drying through a series of devices like water blocking plates and ventilation systems, preventing water accumulation and promoting quick drying. Furthermore, nanochannels with sharp corners can enhance drying rates significantly by siphoning water efficiently, independent of environmental humidity levels, which can expedite the drying process in specific locations.
Why has a quantum dot solar cell not a very high efficiency?
5 answers
Quantum dot solar cells face efficiency challenges due to various factors. Colloidal quantum dots (CQDs) suffer from carrier recombination issues within the material, impacting performance. Additionally, the inability to convert photons below the bandgap energy and thermalization of photon energies exceeding the bandgap contribute to efficiency losses in single bandgap solar cells. To address these challenges, studies have explored different approaches. For instance, incorporating InAs quantum dot layers in GaAs structures has shown improved efficiency up to 27.4%. Furthermore, introducing (3-aminopropyl)triethoxysilane (APTS) on CQD films enhances mechanical stability without compromising efficiency, achieving a PCE of 11.04%. These findings highlight ongoing efforts to enhance quantum dot solar cell efficiency through material optimization and structural modifications.
How to write background of the study?
4 answers
Writing a comprehensive background of the study involves several key components. Firstly, it should include the flow of writing, clearly presenting the research problem, and outlining the purpose of the study. Additionally, the background should cover the growth of settlements, urban population increase, and societal transformations in urban areas. Furthermore, it is essential to incorporate relevant theories, previous research, recent facts, explanations of the research problem, implications, and justification for conducting the study. Proper organization is crucial, ensuring unity, coherence within paragraphs, and smooth transitions between them. By addressing these aspects, a well-structured background of the study can be developed, providing a solid foundation for the research endeavor.
Carbon-Based Adsorbents for PFAS Remediation - Carbon Nanotubes?
4 answers
Carbon-based adsorbents, such as carbon nanotubes, have shown promising potential for PFAS remediation. Studies have highlighted the exceptional adsorption properties of carbon nanotubes due to their high surface area, porosity, and various adsorption sites. Functionalization of carbon nanotubes can enhance their adsorptive properties, making them selective towards specific pollutants like PFAS. Carbon nanotubes interact with PFAS through mechanisms like physical adsorption, electrostatic interactions, and chemical bonding. Additionally, novel nanocomposites like nNiFe-activated carbon have demonstrated significant PFAS reduction and fluoride generation, showing promise for PFAS transformation in both batch and flow conditions. These findings suggest that carbon-based adsorbents, including carbon nanotubes and nanocomposites, hold great potential for effective PFAS remediation strategies.
What are the current trends and demand for photoluminescent pigments in various industries?
5 answers
The current trends and demand for photoluminescent pigments are on the rise across various industries. Photoluminescent pigments, known for emitting light in dim conditions, are gaining popularity in textiles, paints, coatings, prints, vinyl stickers, and polymer applications. Additionally, these pigments are being increasingly utilized in construction and automotive sectors, further boosting market growth. In the realm of smart materials, photoluminescent glass is being developed for photonics, lighting, and photovoltaics applications, offering eco-friendly and recyclable solutions with enhanced optical properties. Furthermore, the synthesis of photoluminescent carbon dots is opening up avenues in optoelectronics, bio-imaging, catalysis, and sensing, with potential applications in solar cells and optoelectronic devices. These advancements underscore the diverse and expanding demand for photoluminescent pigments in various industries.
What is the material composition of a LTO battery?
5 answers
The material composition of a Lithium Titanate Oxide (LTO) battery typically involves the utilization of LTO combined with other materials to enhance its properties. Various studies have explored different composite structures to improve the performance of LTO batteries. These composites include LTO/polyether sulfone (PES) synthesized via laser ablation, LTO combined with carbon nanostructures like graphene (G) and carbon nanotubes (CNTs), LTO with graphene synthesized through reduction processes, LTO with graphene added through a sol-gel method, and mesoporous LTO microspheres with carbon-coatings formed through phase separation of block copolymers. These composite structures aim to address the challenges of low electronic conductivity and lithium-ion diffusivity in LTO, enhancing the overall performance of LTO batteries.
What are metal complexes and titanium metal complex?
4 answers
Metal complexes are compounds involving a metal ion bonded to one or more ligands. Titanium metal complexes are specifically compounds where titanium is the central metal atom. These complexes have various applications, such as catalyst supports, production of titanium alloy materials, and as raw materials for thin film production. Titanium(IV) coordination complexes, a type of titanium metal complex, have been explored for their potential in anticancer treatments due to their low toxicity and hydrolysis into inert titanium dioxide in biological environments. Despite challenges like rapid hydrolysis, efforts to enhance stability and efficacy have led to promising derivatives with improved anticancer properties. Overall, titanium metal complexes offer a wide range of possibilities in different fields due to their unique properties and reactivity.
What is phosphene?
4 answers
Phosphene refers to the perception of light without external visual stimulation, induced by electrical currents on the retina, optic nerve, or cortex. It has potential applications in assisting the blind, guiding visually impaired individuals by creating visual percepts through cutaneous electrical stimulation. Phosphenes can be harnessed for biomedical purposes, like in a walking support system for the blind, where electrical interference between electrodes must be managed to precisely present phosphenes. Phosphene induction can vary based on the frequency and intensity of electrical stimulation, leading to different types and attributes of perceived phosphenes. The ability to control the orientation of phosphenes can enable direct transmission of visual information into the visual field, showcasing the diverse potential applications of this phenomenon.
Can thermal induce dipole arrangement in graphene oxide film?
5 answers
Thermal effects can induce dipole arrangements in graphene oxide films. Research shows that in graphene with dislocation dipoles, thermal equilibrium leads to the movement of dislocations, forming new dipoles and transforming into Stone-Wales defects. Additionally, in graphene/polymer films, thermal annealing under an external electric field induces phase separation, enriching specific phases above graphene layers. Moreover, in a normal/ferromagnetic/normal graphene junction, applying a temperature gradient generates spin currents that cancel each other out, resulting in pure spin currents, which can be modulated by adjusting parameters like gate voltage and Fermi energy. These findings collectively suggest that thermal effects can indeed induce dipole arrangements in graphene oxide films, impacting their structural and electrical properties.