File Name: perspectives on carbon nanotubes and graphene raman spectroscopy .zip
Carbon nanotubes CNTs possess remarkable nonlinear optical properties; a particular application is to function as a mode locker used in ultrafast fiber lasers to produce ultrashort optical pulses. In this review, typical fabrication process and development of CNT SAs are discussed and we highlight the recent investigation and progress of state-of-the-art ultrafast fiber lasers covering GHz, bidirectional ultrafast fiber lasers, vectorial mode fiber lasers, comb systems, and mode-locking dynamics. In the past few decades, ultrafast fiber lasers have gained enormous attention and found applications covering broad fields from fundamental research to industrial process, based on their salient advantages, including maintenance-free operation, compactness, cost-effective design, high beam quality, high-efficient heat dissipation and rather low price [ 1 ], [ 2 ], [ 3 ].
- Characterization techniques for graphene-based materials in catalysis
- Perspectives on carbon nanotubes and graphene Raman spectroscopy.
- Lattice vibrations and Raman scattering in two-dimensional layered materials beyond graphene
- Carbon Nanotubes and Graphene
Characterization techniques for graphene-based materials in catalysis
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Perspectives on carbon nanotubes and graphene Raman spectroscopy.
Characterization techniques for graphene-based materials in catalysis[J]. Article views PDF downloads Cited by Figures Previous Article Next Article. Review Topical Sections. Characterization techniques for graphene-based materials in catalysis.
Carbon nanotubes CNTs are receiving a great deal of attention as a catalyst support for different energy applications, due to their high surface area and high conductivity. Recent literature studies have shown that the application of CNTs mainly depends on their surface functionalization process. Typically, pristine CNTs as produced have no functional groups, which is usually considered as an obstacle to their widespread application. In this chapter, we highlight the different techniques used to functionalize the surface of CNTs, including physical and chemical functionalization processes. We show the advantages and the drawbacks of the different functionalization processes. Additionally, we explain in detail the different techniques used to characterize the CNTs before and after functionalization processes.
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Lattice vibrations and Raman scattering in two-dimensional layered materials beyond graphene
Raman spectroscopy has been already established as a powerful tool for characterizing the different types of carbon nanostructures , ranging from the highly ordered two-dimensional graphene and one-dimensional nanotubes , down to disordered materials, like nanographite and charcoal. Here we focus on the recent advances of Raman spectroscopy within carbon nanoscience. We discuss in situ nano-manipulation and Raman imaging for addressing controlled perturbations; multi-technique work for the development of nanometrology; crossing the diffraction limit with near-field optics for high resolution imaging.
Updated to include expanded coverage of the preparation, purification, structural characterization, and common application areas of single- and multi-walled CNT structures, this work compares, contrasts, and, where appropriate, unitizes CNT to graphene. New chapters encompass recent developments in the theoretical treatments of electronic and vibrational structures, and magnetic, optical, and electrical solid-state properties, providing a vital base to research. Current and potential applications of both materials, including the prospect for large-scale synthesis of graphene, biological structures, and flexible electronics, are also critically discussed.
We review lattice vibrational modes in atomically thin two-dimensional 2D layered materials, focusing on 2D materials beyond graphene, such as group VI transition metal dichalcogenides, topological insulator bismuth chalcogenides, and black phosphorus. Although the composition and structure of those materials are remarkably different, they share a common and important feature, i. Black phosphorus , including crystalline structures and stacking order. We then review the studies on vibrational modes of layered materials and nanostructures probed by the powerful yet nondestructive Raman spectroscopy technique.
К тому времени все уже рухнет.
Carbon Nanotubes and Graphene
Поэтому такая перспектива даже не обсуждалась. Сьюзан старалась сохранять самообладание. Мысли ее по-прежнему возвращались к сотруднику лаборатории систем безопасности, распластавшемуся на генераторах. Она снова прошлась по кнопкам.
- Что предпочитаешь. - У меня черный пояс по дзюдо. Беккер поморщился. - Предпочитаю вид спорта, в котором я могу выиграть.
Raman spectroscopy is here shown to provide a powerful tool to differentiate between two different sp2 carbon nanostructures (carbon.