Konstantin Novoselov Research Articles

STUDY LITERATUR : GRAPHENE, NANO TEKNOLOGI SEBAGAI MATERIAL KONSTRUKSI MASA DEPAN

The development of science and technology encourages progress in various fields, especially through academic innovation. In 2010, Andre K. Geim and Konstantin Novoselov won the Nobel for their discovery of graphene; using tape and graphite. Graphen, known as nanotechnology; superior, has conductive, strong and elastic properties, with these superior properties making graphen a material that has great potential for use in construction activities, such as steel wire ropes for bridges. NASA plans a lift to space using graphene; because of his strength. This research analyzes publications from various sources such as Google Scholar, Dimension, and Research Gate, exploring the attributes of graphene and its derivatives to improve the properties of composite cements and future construction. With the same basic properties as Graphene, Graphene oxide (GO) is also able to increase the compressive, tensile and ductility strength of concrete, reduce cracking, provide electrical conductivity, increase corrosion resistance, and improve the workability of the concrete mixture. Although its use in construction has great potential to overcome future construction problems. However, to be able to use graphene in construction activities, it still requires a lot of development and research.

Opening band gap of multi-color graphene quantum dots using D-fructose as a green precursor

Graphene was successfully isolated by Professors Andre Geim and Kostya Novoselov in 2004. Graphene has attracted considerable research importance for its distinctive properties and potential applications. In this study, low-cost and high blue, yellow, and green photoluminescent (PL) graphene quantum dots (GQDs) were synthesized with deionized water (DI) and D-fructose as precursors by the dehydration method in the presence of hydrochloric acid. Transmission electron microscopy imaging proved the changing size of the GQDs and, by nuclear magnetic resonance spectroscopy, we observed the hydrogen-functionalized GQDs. The highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) of the synthesized GQDs were determined, and an energy bandgap was obtained from optical investigations.

Observation of carrier dynamics in MoS2 thin layer by femtosecond transient absorption microscopy

Since the Nobel Prize was awarded in 2010 to Andre Geim and Konstantin Novoselov for their work on graphene, research in two-dimensional materials has attracted much attention. Transition metal dichalcogenides, which consist of transition metal atoms and chalcogen atoms other than oxygen, have potential applications in various electronics fields. However, there have been few observations of the transition processes of these electronic states, and the mechanisms of their functions are still unclear. In this study, the carrier dynamics of mechanically exfoliated MoS2 film were observed using femtosecond transient absorption microscopy. The time constant of carrier relaxation at the thin region was shorter than those of the thick. Electronic state differences and carrier trapping on the surface state regulate the lifetime of carriers in MoS2.

Graphene synthesis, fabrication, characterization based on bottom-up and top-down approaches: An overview

This study presents an overview on graphene synthesis, fabrication and different characterization techniques utilized in the production. Since its discovery in 2004 by Andre Geim and Kostya Novoselov several research articles have been published globally to this effect, owing to graphene’s extraordinary, and exclusive characteristics which include optical transparency, excellent thermal, and mechanical properties. The properties and applications of this two-dimensional carbon crystal composed of single-layered material have created new avenues for the development of high-performance future electronics and technologies in energy storage and conversion for the sustainable energy. However, despite its potential and current status globally the difficulty in the production of monolayer graphene sheet still persists. Therefore, this review highlighted two approaches in the synthesis of graphene, which are the top-down and bottom-up approaches and examined the advantages and failings of the methods involved. In addition, the prospects and failings of these methods are investigated, as they are essential in optimizing the production method of graphene vital for expanding the yield, and producing high-quality graphene.

A new twist on graphene: an interview with Pablo Jarillo-Herrero and Allan MacDonald.

Graphene is the building block of graphite, made of carbon atoms bonded into sheets of hexagonal rings just a single atom thick. Although such isolated sheets had been predicted for many decades to exist, and had been grown on other surfaces, interest in this material exploded after the discovery in 2004 that single sheets could be made easily and cheaply by separating them mechanically from graphite flakes (a process called exfoliation). Although graphene is often advertised as a ‘wonder material’—electronically conducting, transparent and extremely strong and flexible—much of the interest in it is more fundamental. As a 2D conductor, graphene shows unusual electronic and magnetic properties that enable the study of quantum-mechanical effects of confinement and of correlations between electron motions—some of which might find applications in electronic devices. The excitement of this discovery was reflected in the award of the 2010 Nobel Prize in Physics to two pioneers in the field: Andre Geim and Konstantin Novoselov of the University of Manchester in the UK.This rich behavior is broadened still further when two graphene sheets are brought close enough to interact with one another. In particular, the electronic properties may then depend on the relative orientation of the sheets: how aligned the two ‘honeycomb’ lattices are. Two grids superimposed on one another may create ‘superlattices’: regularities at larger scales than the grid spacing, due to registry (commensurability) between the two at certain angles. This so-called moiré effect is sometimes evident for two closely spaced grid-like fences seen from afar. Experimentally exploring the electronic properties of such ‘twisted bilayer graphene’ requires an ability to precisely control the position and orientation of the two sheets. These phenomena are now recognized as generic to other 2D materials, such as hexagonal sheets of boron nitride. They have revealed a fertile playground for condensed-matter physics. In particular, striking electronic properties appear at certain ‘magic-angle’ twists of the layers.NSR spoke to two of the leading experts in the study of magic-angle twisted bilayer graphene (MATBG): experimentalist Pablo Jarillo-Herrero of the Massachusetts Institute of Technology and theorist Allan MacDonald of the University of Texas at Austin.

Graphene's Correlation of Electrical and Magnetic Properties Manages the Modification and Increasing the Energy of Li Batteries

Importance of lithium power sources is confirmed by the fact that on October 10, 2019, the Nobel Prize in Chemistry in 2019 was awarded for the development of lithium-ion batteries. 10 years earlier, in 2010,physicists Andre Geim and Kostya Novoselov were awarded the Nobel Prize in Physics "For groundbreaking experiments regarding the two dimensional material graphene". A synergistic effect of theory and practicality in the area of lithium batteries, and the theory and practicality in the field of graphene materials creates the unique possibility generate the innovative high-energy Li batteries based on the graphene materials.

ГЕОЛОГІЯ ГРАФІТОВИХ РОДОВИЩ УКРАЇНИ ТА ПЕРСПЕКТИВИ ВИДОБУТКУ В СУЧАСНИХ УМОВАХ

Extraction of graphite and its use in various spheres of production and technology play a significant role in the economies of many countries. Distinctive characteristics of graphite, which is one of the most common forms of carbon in nature (good electrical conductivity, low hardness, resistance to heat and aggressive environments), are widely used by scientists in various scientific developments. After British researchers of Russian origin from the University of Manchester Andre Geim and Konstantin Novoselov published an article about properties of the first studied two-dimensional graphene crystal in the journal Science in 2004, and numerous studies of properties of the new material, the demand for graphite ore has been increasing, and, according to some forecasts, it will amount to more than $ 400 million by 2026. Natural flake graphite can be used in new technologies, such as graphene, which is now used in various scientific experiments, as well as in the production of lithium-ion batteries, fuel cells, nuclear and solar power plants. Geological conditions of the Zavallivske graphite deposit, which is the main source of graphite in Ukraine, have been briefly presented in the paper, and perspectives of identified areas that can become an additional reserve of graphite ore have been outlined. Significant prognosis resources of graphite in new deposits, which have been recently discovered in Ukraine (Burtynske, Balakhivske, Sachkinsko-Troitske, a number of new sites within the Zavallia area), allow not only to maintain at the appropriate level, but also, if necessary, expand existing mineral raw material base, so Ukraine could become one of the world's largest suppliers of graphite products. Graphene has a great mechanical strength and a very high thermal conductivity. An extremely high mobility of electrons makes graphene a perspective material for the application in various fields, in particular, as a future basis for nanoelectronics and possible replacement of silicon in integrated circuits. Results on the application of unique properties of graphene have been presented.

Study on Controllable growth of graphene prepared by CVD

Graphene is a two-dimensional honeycomb crystal of monoatomic thickness composed of hexagonal sp2 hybrid carbon atoms. Since the mechanical separation of Andre Gamm and Konstantin Novoselov in 2004 to obtain a single layer of graphene, this unique two-dimensional structure makes graphene excellent physical, chemical, mechanical, electrical and other properties. It has become the focus of much research in recent years. These properties include exceptionally high charge, high mechanical strength and elasticity, optical clarity and a variety of possible chemical modifications that make graphene promising in micro-nanoelectronics, photodetection and conversion materials, structural and functionally enhanced composites and storage. It can be applied in a wide range of fields, but graphene is different from graphite in nature, and its size is small and the yield is low. So how to prepare high quality graphene is the key to study its application prospects. The emergence of chemical vapor deposition (CVD) technology solves these problems and has evolved into an important method for preparing large-area, large-size, multi-purpose graphene. Large-sized graphite thin single crystals can be obtained on a substrate by controlling the growth mode and different treatments for the substrate. Due to the strong interaction between carbon atoms and the substrate, there are still many difficulties and challenges in directly growing graphite on the insulating substrate. This topic aims to prepare graphene by chemical vapor deposition (CVD) and prepare it. The method is improved to obtain graphene with excellent performance, which provides more feasibility for the practical application of graphite thinning in semiconductor devices.

Graphene: Structure, Synthesis, and Characterization; a brief review

In 2004, Andrei Geim and Kostya Novoselov used a simple technique to separate graphene layer from graphite. They were awarded the Nobel Prize in Physics in 2010. After this, the publications of graphene have been increasing year after year and have emerged as the most popular topic in the research field which indicates the importance of graphene research. Due to unique properties of graphene, it can be considered as promising material for various applications in the fields of physics, chemistry, material science and engineering, and biology. Consequently, this review will focus on using of biomass and other wastes as precursor material for graphene preparation. We hope it could be of any help to people who are interested in this field. The future outlook of graphene is also considered.

Preface

It is our pleasure and honour to introduce this prestigious publication – The Proceedings of the Institute of Physics International Conferences Electrostatics 2019 and Dielectrics 2019. The conferences were organised by the Dielectrics & Electrostatics Group of the Institute of Physics, and for the first time were co-located in the historic city of Manchester, UK from 8th to 12th April 2019. Electrostatics 2019 was the 15th conference in the series since its inauguration 66 years ago. The conference has been held at many venues around the UK, but this was the first time in Manchester. We are proud to say that is was something of a home coming for electrostatics as two of the founders of the Electrostatics Group, then known as the Static Electrification Group, were based in Manchester: Dr N Gibson and Dr P S H Henry. This year also marks the 46th Anniversary of the Dielectrics Group, which is now part of the Dielectrics & Electrostatics Group, and was formerly the Dielectrics Society.Manchester is the second largest city in Great Britain. The city is also home to many discoveries. The luxury car company Rolls-Royce was first established in Manchester in 1904. In the late 1940’s, professors at Manchester University developed the first computer that had a stored programme and memory. More recently, graphene, also known as a wonder material, was first extracted by two professors at Manchester University: Sir Andre Geim and Sir Kostya Novoselov, for which they were awarded the Noble prize in Physics in 2010. The world’s first intercity railway was designed and built by the great George Stephenson was opened in 1830, operating between Manchester and Liverpool. Manchester is also famous for its cotton industry and was even known as Cottonopolis in the 19th century.Electrostatics 2019 spanned across four days and included fifteen oral presentation sessions and three poster presentation sessions. The final two sessions of Electrostatics 2019 were joint sessions forming the first two sessions of Dielectrics 2019, which continued into the fifth day with a total of seven oral presentation sessions and one poster presentation session. The conferences were truly international with delegates attending from across the globe: Australia, Austria, Belgium, Canada, Czech Republic, Finland, France, Germany, Hong Kong, Hungary, India, Ireland, Japan, South Korea, Lebanon, Mexico, Poland, Portugal, Qatar, Spain, Sweden, Switzerland, Tunisia, USA and, of course, United Kingdom. There was also a balanced representation between academic/research institutions (∼60%) and industry (∼40%), which was an added highlight of the conference. There were a significant number of research students attending and presenting their work, which was really an exciting benefit as students will be our future scientists/professors/CEO’s. There were also exhibitors, who were very active and lively in engaging with the delegates.

Graphene a Fundamental of Interaction Globe

Communication became certainly one of the integral parts into the social and development that is technical of beings. B ut, the downside that is biggest within the contemporary realm of interaction is that the quantity of people utilizing mobile, internet as well as other such interaction surroundings are increasing at a significant price. This contributes to greater bandwidth requirement and much more than that, greater rate of information transfer. Because, as the amount of users enhance, greater would be the strain o letter various products which form the infrastructure that is fundamental of interaction globe.Graphene, a product found by Nobel Prize champions Andre Geim and Konstantin Novoselov is a product which assists in working with these specific things. It's a two type that is dimensional of which includes unique properties which will help in increasing the d ata prices tremendously. The most crucial home of Graphene is the fact that sign moving through the products c an flow with speeds reater that is g the rate of light. One other properties[1] are its interestingly great energy and freedom that is superb. The products such as for example a ntennas, transistors, etc. developed by utilizing Graphene as the fundamental product g ive better and gratification that is efficient. A great many other products like batteries and touch screens are more versatile and efficient whenever developed by utilizing Graphene

GFETSIM: Graphene Field-Effect Transistor Simulator of Interface Charge Density

The discovery of graphene by Andre Geim and Konstantin Novoselov in 2004 contributed significantly to complementary metal-oxide-semiconductor (CMOS) technology, especially for electronic devices. Due to its outstanding properties, graphene has been used in many applications such as field-effect transistors (FETs), touch-sensitive screens, liquid-crystal displays, light-emitting diodes, dye-sensitised solar cells, and organic solar cells. Consequently, interface charge density in graphene field-effect transistors has become an important area of research in order to more accurately determine electronic characteristics such as capacitance-voltage (C-V). In this research, we developed a comprehensive simulation tool based on graphene FET called graphene field-effect transistor simulator (GFETSIM) of interface charge density, which functions as a graphical user interface (GUI) using MATLAB. This simulation represents the on-going development of a carbon-based device simulator begun in 2014 at Universiti Teknologi Malaysia (UTM). An automated selfconsistent approach is utilised to extract and compute the interface charge density. It is coded in MATLAB and the program was developed into an interactive MATLAB GUI simulation tool. The interface for GFETSIM is generated using the graphical user interface development environment (GUIDE) in MATLAB. This simulator allows users to import external C-V data into the GUI and carry out analysis based on the density of states plots. In addition, key parameter values can be varied to assess the outcome and changes in interface trapped density. In addition, a reset button is embedded into the simulator.

Progress in the graphene research since 2010

With exotic discovery of graphene, the focus of researchers brings initiatives in field of atom-thick two-dimensional (2D) materials having exceptional and extraordinary properties. In year 2010, Prof. Andre Geim and Prof. Konstantin Novoselov from the University of Manchester, UK were jointly awarded the Nobel Prize in Physics for their ground-breaking experiments on the two-dimensional material graphene. Data elucidated from Scopus indicates that since 2010, on graphene 77, 221 documents have been published from over 120 countries. Number of documents reported on graphene increased from 3,748 to 16,378 since 2010 to 2016.

Two fashion debuts: The Little Black Graphene Dress and electronic devices to keep skin looking young

Graphene enters the fashion fray Several years ago, graphene was all the rage among geeks. But now fashionistas are getting in on the action with the debut of the Little Black Graphene Dress. The dress is designed by haute couture champion Cute Circuit, whose clients include singers Katy Perry and Nicole Scherzinger. Graphene is merely an atom thick, but it is nevertheless prized for being a strong, lightweight, electrically conductive material. University of Manchester professors Kostya Novoselov and Andre Geim discovered graphene and received the Nobel Prize in Physics for their work in 2010. Scientists are developing the promising material for use in semiconductors, wearable sensors, batteries, and composite materials. Experts at the University of Manchester say that someday people will be able to buy graphene-enabled smartphones that they can wear on their wrists or graphene-enhanced electronic tablets that they can roll up like a newspaper. But the world of

Review of the synthesis, transfer, characterization and growth mechanisms of single and multilayer graphene

Graphene has emerged as the most popular topic in the active research field since graphene's discovery in 2004 by Andrei Geim and Kostya Novoselov.

Exploring ‘Flatland’s’ Future during Materials Week at Warwick

Materials have been at the heart of humankind’s development since our beginning. Recently, a new family of materials have emerged that promise to revolutionise our technologies. These are materials that are only one atom thick, truly two-dimensional. From 1 to 5 of February 2016, Warwick hosted Materials Week, which brought together students, researchers, and the public to discuss materials research at Warwick. This critical reflection piece looks at the events in Materials Week that focused on the emerging field of 2D materials: a workshop to discuss 2D materials in composites and electrochemistry; a colloquium by Professor Jonathan Coleman, a leader in the production of 2D materials; and finally a lecture from Professor Sir Konstantin Novoselov, one of the two researchers who won the Nobel Prize in Physics for having started the 2D revolution.

Growth, study, and device application prospects of graphene on SiC substrates

It is well known that graphene, which brought the 2010 Noble Prize in physics to Russian scientists Andre Geim and Konstantin Novoselov, exists as two-dimensional carbon layers. The possible range of graphene applications includes development of field-effect transistors for digital and analog electronics, nanoelectromechanical systems, quantum dots, cold cathodes, supersapacitor, gas sensors, and nearly transparent electrodes and coatings. The possibility of using graphene for hydrogen storage and the manufacture of composite materials is also being studied. Being a two-dimensional material, graphene provides ultimate one-dimensional miniaturization and is a convenient basis for manufacture of different nanoelectronic, nanomechanical and nanochemical devices by lithographic methods. The graphene-based device which is closest to being successfully realized for practical application is the gas sensor. The use of graphene makes it possible to achieve a sensitivity exceeding that of all other materials, less than 1ppb. This device combines the comparative simplicity of manufacture with a wide spectrum of possible applications. It should also be mentioned that the structure of the gas sensor actually reproduces the structure of the field-effect transistor. Thus, the gas sensor can be considered the first stage in the development of intricate transistor electronics based on graphene. The paper briefly reviews growth experiments and studies of graphene films on silicon carbide (SiC) and the development of prototype gas sensors based on this material.

Chemical Vapour Deposition of Graphene

Write your name on a piece of paper with a pencil and you have just created the hottest new material in physics, namely graphene. Graphene is a single atomic layer of graphite arranged in a perfect network of repeating hexagons. It was discovered in 2004 by Andre Geim and Konstantin Novoselov, who received the 2010 Nobel prize in physics. Because of graphene’s unique two-dimensional nature, it has a variety of interesting properties. For example, graphene’s high crystal quality is the result of extremely flexible interatomic bonds, which create a substance stronger in plane than diamond yet allows planes to bend when a force is applied perpendicular to this plane. The current challenge in this area of study is to make uniform large area films of graphene. A promising method is chemical vapour deposition (CVD) on metal substrates, particularly copper (Cu). An apparatus for CVD of graphene was built and tested. Using a variety of different experimental conditions, the growth of graphene was investigated. Scanning electron microscopy was used as a preliminary diagnostic tool to determine the presence of graphene. The graphene was then transferred from Cu onto silicon dioxide in order to image the sample using optical and Raman spectroscopy. These methods both confirmed that graphene is present. Further work is being done to optimize the growth and transfer methods as well as to test some of graphene’s interesting electrical and mechanical properties.

Graphene to gold?

Graphene has blazed an impressive trail since Konstantin Novoselov and Andre Geim first isolated it at Manchester University in 2004. The city is home to the gleaming National Graphene Institute (NGI), which opened in March 2015. Graphene has even begun to figure in our cultural consciousness. Artist Cornelia Parker worked with Novoselov on a graphene-themed launch for the award-winning recent refurbishment of Manchester's Whitworth Art Gallery. Graphene and 2D materials are also the subject of a groundbreaking exhibition next year at the city's Museum of Science and Industry (MSI). New research constantly fans the flames of graphene's potential.

InterviewFrom fine art to fireworks

David Smith talks to Nobel Prize-winning graphene pioneer Konstantin Novoselov about his early career in Russia and his move to Manchester, where he is currently involved in setting up the National Graphene Institute.