Materials Literature
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Large-scale production of thiolated Au nanoclusters (NCs) of tunable sizes is pivotal to realizing their practical applications. Here, we present a simple one-pot synthesis method for gram-scale production of various discrete-sized Au NCs (Au 10–12, Au 15, Au 18, and Au 25 ) protected by different thiol ligands. The k…
Photon-upconverting nanoparticles (UCNPs) are lanthanide-doped nanocrystals that emit visible light under near-infrared excitation (anti-Stokes emission). This unique optical property precludes background fluorescence and light scattering from biological materials. The emission of multiple and narrow emission lines is…
Natural molecular biomass plays an important role in the field of renewable polymers, as they can be directly used or derivatized as monomers for controlled polymerization, in a way similar to many petroleum-derived monomers. We deliver this perspective primarily based on a monomer approach. Biomass-derived monomers a…
We study the electronic structure of a heterojunction made of two monolayers of MoS${}_{2}$ and WS${}_{2}$. Our first-principles density functional calculations show that, unlike in the homogeneous bilayers, the heterojunction has an optically active band gap, smaller than the ones of MoS${}_{2}$ and WS${}_{2}$ single…
Cellulose is the most abundant biomass material in nature, and possesses some promising properties, such as mechanical robustness, hydrophilicity, biocompatibility, and biodegradability. Thus, cellulose has been widely applied in many fields. “Smart” materials based on cellulose have great advantages—especially their…
The generation of intense coherent deep-UV light from nonlinear optical materials is crucial to applications ranging from semiconductor photolithography and laser micromachining to photochemical synthesis. However, few materials with large second harmonic generation (SHG) and a short UV-cutoff edge are effective down…
The recent surge in the utilization of semiconductor nanostructures for solar energy conversion has led to the development of high-efficiency solar cells. Some of these recent advances are in the areas of synthesis of new semiconductor materials and the ability to tune the electronic properties through size, shape, an…
Farbenspiele: Polymerartige Kohlenstoffpunkte (CDs) können schnell und in großen Mengen hergestellt werden. Mit ca. 80 % erzielen die CDs die bisher höchsten Quantenausbeuten für fluoreszierende Kohlenstoffmaterialien, woraus sich Anwendungsmöglichkeiten in Vielfarben-Musterbildung und Biosensoren ergeben könnten.
Shine on you crazy dots: A rapid and high-output strategy allows the fabrication of polymer-like carbon dots (CDs) with quantum yields as high as ca. 80 %. This value is the highest reported to date for fluorescent carbon-based materials, and gives promise for their application in multicolor-patterning and biosensors.
In this study, Mg-7Gd-5Y-1Nd-0.5Zr alloy (EW75) was produced by melting method and then press-forged into large size plate. The properties of the Mg-7Gd-5Y-1.2Nd-0.5Zr alloy were optimized through T6 heat treatment. The microstructures of alloy were observed by means of optical microscopy (OM), scanning electron micro…
A series of Ti-Mo-Sn alloys with different Mo contents from 7% to 15% (wt. %) were prepared, and the effects of Mo content and thermo-mechanical treatment on their microstructural evolution and mechanical behavior were investigated. The experimental results indicated that the β to α martensite transformation can be ef…
The collection of peer reviewed papers C-MRS 2012 meeting includes 146 papers selected from Symposium O: TiAl alloys and advanced structure intermetallics, Symposium Q: Aerospace materials, Symposium R: Advanced Magnesium alloy and application, Symposium S: Superalloys, and Symposium T: Advanced titanium alloys.Volume…
The effect of common solution treatment, two-step solution treatment and aging, solution treatment and aging (STA) on the microstructure and mechanical properties of a new low cost titanium alloy used in aviation field were investigated by optical microscope (OM), scanning electron microscopy (SEM) and tensile test. T…
The effect of heat treatment on vacuum die-casting (VDC) AT72 magnesium alloy was studied. The optimal process of heat treatment was obtained. The result shows that the alloy was composed of α-Mg, Mg 17 Al 12 and Mg 2 Sn. After solution treatment at 686K for 24h, Mg 17 Al 12 completely dissolved in α-Mg matrix. With t…
The experiment has taken composite algorithm of cold rolling to prepare copper and aluminum composite laminate, studied the influence of diffusion heat treatment on the interface of copper and aluminum composite laminate. After Analyzed the relationship between the thickness of diffusion layer and diffusion heat treat…
9Cr-0.35wt.%Y 2 O 3 oxide dispersion strengthened (ODS) ferritic/martensitic steels were prepared by mechanically alloying (MA) and spark plasma sintering (SPS). FE-SEM and TEM with X-ray energy spectrum (EDX) were employed to characterize the microstructural evolution and chemical composition before and after heat tr…
Since the rediscovery of carbon nanotubes (CNTs) by Iijima in 1991, a plethora of applica‐ tions have been developed in the fields of biomolecular science, catalysis, environmental chemistry and medicine. Relevant to the development of these new technologies, it is impor‐ tant to effectively characterize and tune the…
A series of doubly β-to-β bridged cyclic Zn(II) porphyrin arrays were prepared by a stepwise Suzuki-Miyaura coupling reaction of borylated Zn(II) porphyrin with different bridge groups. The coupling of the building block of β,β'-diboryl Zn(II) porphyrin 1 with different bridges provided the doubly β-to-β carbazole-bri…
<TEX>$Mg_{3-x}Zn_xSb_2$</TEX> powders with x = 0-1.2 were fabricated by mechanical alloying in a planetary ball mill with a speed of 350 rpm for 24 hrs and then hot pressed under a pressure of 70 MPa at 773 K for 2 hrs. It was found that there were systematic shifts in the X-ray diffraction peaks of <TEX>$Mg_3Sb_2$</T…
Zn-Al-Cu alloys are characterized by advantageous set of functional quality futures: tribological, strength, corrosion. They are used as an alternative material for bronze, cast iron and aluminum alloys in bearings and as a structural material. Properties of Zn-Al-Cu can be improved by partial or total replacement of…