The dependence of the energy bandgap and lattice constant of III-V semiconductors on the electronegativity difference of the constituent elements were investigated. Some empirical expressions for estimating the energy bandgap and lattice constant with respect to solid compositions for mixed crystals were obtained. The results for some material systems predicted by electronegativity difference approach (ENDA) are compared with those obtained experimentally and those calculated by classical interpolation techniques (IT). The agreement between them is quite good, and it is demonstrated that ENDA is a simple and useful method for designing III-V mixed crystals. 相似文献
Summary: We developed a novel thermo‐reversible gelation system by mixing xyloglucan with an iodine solution. Xyloglucan dissolves in water to produce a colorless solution. However, the addition of iodine solution induces color and gelation; heating causes the gel to melt and become colorless. According to results from spectroscopic and small‐angle X‐ray scattering experiments, the gelation mechanism was proposed to involve two xyloglucan chains that associate side‐by‐side and incorporate iodine and/or iodide ions.
Xyloglucan gel prepared by mixing xyloglucan and iodine solution and heating to 60 °C, followed by cooling. 相似文献
