Mechanical properties of ZnS nanobelts.
نویسندگان
چکیده
Mechanical properties of ZnS nanobelts were measured at room temperature by direct nanoindentation experiments. It was found that the ZnS nanobelts achieve 79% increase in hardness but 52% decrease in elastic modulus compared to bulk ZnS. The nanobelts were found to exhibit creep under indentation. Indentation cracking was preferred along the belt growth direction. Indentation deformation behavior and fracture mechanisms of the ZnS nanobelts are discussed in conjunction with their crystalline structure, size effect, and surface-to-volume ratio.
منابع مشابه
Morphology-tuned wurtzite-type ZnS nanobelts.
Nanometre-sized inorganic dots, wires and belts have a wide range of electrical and optical properties, and variable mechanical stability and phase-transition mechanisms that show a sensitive dependency on size, shape and structure. The optical properties of the semiconductor ZnS in wurtzite structures are considerably enhanced, but the lack of structural stability limits technological applicat...
متن کاملThe competition between template growth and catalytic growth of one-dimensional ZnS nanostructures: nanobelts or nanowires.
Template growth and catalytic growth are two typical mechanisms for the solution-chemistry synthesis of one-dimensional (1D) II-VI semiconductor nanomaterials. Here, we systematically demonstrate the competition relationship between them by tuning the synthesis of 1D ZnS nanostructures in different chain-length primary alkyl-amines. The template growth, derived from the coordination effect of a...
متن کاملPhase controlled synthesis of ZnS nanobelts: zinc blende vs wurtzite
Bulk crystals of ZnS usually take the zinc blende structure. However, the vapor deposited one-dimensional ZnS nanostructures normally take the metastable wurtzite structure. This Letter investigates the conditions under which the formed phase can be controlled between zinc blende and wurtzite in nanomaterials synthesis. The formation of pure zinc blende structured ZnS nanobelts is related not o...
متن کاملHeteroepitaxial growth of GaP/ZnS nanocable with superior optoelectronic response.
We demonstrate the controlled growth of coaxial nanocables composed of GaP/ZnS core-shell structures by a facile chemical vapor deposition method. Structural analysis confirms that the cubic GaP (111) plane and wurtzite ZnS (0001) plane present close similarities in terms of hexagonal-arranged atomic configuration with small in-plane lattice mismatch, and the ZnS shell is epitaxially grown on t...
متن کاملHierarchical structured nanohelices of ZnS.
Wurtzite-structured materials, such as ZnO, ZnS, GaN, and AlN, have an important characteristic: the presence of polar surfaces that result from cationor anion-terminated atomic planes. Consequently, a series of novel nanostructures, such as nanosprings, nanorings, nanohelices, and nanobows, have been formed. The mechanism that drives the formation of these novel configurations minimizes the el...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Nano letters
دوره 5 10 شماره
صفحات -
تاریخ انتشار 2005