نتایج جستجو برای: دیکالکوژن فلزات واسطه tmdcs
تعداد نتایج: 18669 فیلتر نتایج به سال:
در این پژوهش خواص الکترونی و مغناطیسی نانولوله زیگزاگ (0,9) gaas خالص و آلایش یافته با 11/11 درصد عناصر واسطه( sc, ti, cr, mn , fe, co, ni) در دو وضعیت دور و نزدیک، با استفاده از رهیافت نظریه تابعی چگالی و تقریب چگالی موضعیlda توسط کد محاسباتی siesta مطالعه شده است. ساختار نواری نشان دهنده این است که نانولوله خالص زیگزاگ (0،9) gaas نیم رسانای غیرمغناطیسی با گاف نواری مستقیم است.آلایش 11/11 درصد...
در این پروژه از رویکرد بالا به پایین و استفاده از دستگاه آسیاب سیاره ای پرانرژی برای تولید نانو ذرات اکسید فلزات واسطه استفاده شده است و اثر pca و مدت زمان آسیا کاری برروی آن بررسی شده است.نانو ذراتی که به این طریق تولید شدند با استفاده از طیف پراش پرتو ایکس(xrd) و معادله شرر اندازه ذارت محاسبه شد که به طور میانگین منجر به تولید ذراتی با اندازه 40nm گردید.که تصاویر میکروسکوپ الکترونی روبشی(fese...
van der Waals epitaxy of TMDCs and their applications.
Interfaces between mica and graphene, as well the transition metal dichalcogenides (TMDCs) MoS2 WS2, were wetted with water ethanol, investigated employing scanning force microscopy molecular dynamics (MD) simulations. Below 25% RH, wets graphene-mica interface labyrinthine structures, exhibiting branch widths of about 50 nm for single layers increasing to almost an order magnitude more four gr...
A novel surface plasmon resonance (SPR) sensor with transition metal dichalcogenides (TMDCs) and polyaniline (PANI)/chitosan composite for detection of heavy ions in an aquatic environment is proposed analyzed. Goos-Hänchen (GH) shift sensing scheme based on TMDCs PANI/chitosan structure proposed. The theory shows that the GH can be significantly enhanced SPR silver (Ag), TMDCs, heterostructure...
Abstract Laser processing is a highly versatile technique for the post-synthesis treatment and modification of transition metal dichalcogenides (TMDCs). However, to date, TMDCs synthesis typically relies on large area CVD growth lithographic post-processing nanodevice fabrication, thus relying heavily complex, capital intensive, vacuum-based environments fabrication tools. This inflexibility ne...
Reduced exciton mass, polarizability, and dielectric constant of the surrounding medium are essential properties for semiconducting materials, they have been extracted recently from magnetoexciton energies. However, acceptable accuracy suggested method requires very high magnetic intensity. Therefore, in present paper, we propose an alternative extracting these material available experimental s...
Atomically layered transition metal dichalcogenides (TMDCs) exhibit a significant potential to enable next-generation low-cost transistor biosensors that permit single-molecule-level quantification of biomolecules. To realize such potential biosensing capability, device-oriented research is needed for calibrating the sensor responses to enable the quantification of the affinities/kinetics of bi...
This study describes a new and simple approach to dope two-dimensional transition metal dichalcogenides (TMDCs) using the superatom Co6Se8(PEt3)6 as the electron dopant. Semiconducting TMDCs are wired into field-effect transistor devices and then immersed into a solution of these superatoms. The degree of doping is determined by the concentration of the superatoms in solution and by the length ...
Van der Waals epitaxy on the surface of two-dimensional (2D) layered crystals has gained significant research interest for assembly well-ordered nanostructures and fabrication vertical heterostructures based 2D crystals. Although van epitaxial hexagonal phase transition metal dichalcogenides (TMDCs) been relatively well characterized, a comparable study distorted octahedral (1T? or Td) TMDCs is...
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