无明胶重铬酸盐全息记录软片的正性光抗蚀特性

对无明胶重铬酸盐全息记录软片（ＮＧＤ）的光正性抗蚀特性进行了分析研究，通过对溶解度的分析及红外光谱的测定，首次提出ＮＧＤ是一种新型的紫外正性光抗蚀材科，给出了实验及分析结果。     

全息光刻-离子束刻蚀制作磁性亚微米结构

激光干涉制作亚微米尺寸磁性周期结构中,基底材料具有高反射率,由于垂直驻波的影响,光刻胶浮雕图形侧壁产生"束腰",本文将O2反应离子刻蚀引入到制作工艺中,对光刻胶图形进行修正,获得了很好的效果,具有工艺简单、可控性好等特点。以50nm厚的由磁控溅射生长的Ta/Co0.9Fe0.1/Ta薄膜为基底,采用激光干涉光刻结合离子束刻蚀转移图形的方式,制作出了特征尺寸为330nm Co0.9Fe0.1亚微米周期结构,并采用SQUID的技术对其磁滞回线进行了研究。     

用于全息记录的光致聚合物材料的研究进展

阐述了光致聚合物的反应原理、形成全息图的机理,讨论了影响光致聚合物全息存储性能的因素及其规律,同时还介绍了光致聚合物用于全息存储的最新进展,并对其发展趋势进行了展望.     

全息记录材料的某些研究和进展

全息摄影用记录材料品种很多,因受性能影响,有的处于研究阶段或处于被淘汰境地。性能较好的重铬酸盐明胶存在影像易消褪弊病,将明胶换成有机聚合物从而改善克服了此缺陷。光致染料变色与有机聚合物全息材料利用螺吡喃,螺嗪染料吸收10．4～10．5μm长波红外线,产生热活性反应,随着染料的光致变色的热量传递使高分子有机聚合物产生折射率变化而形成全息影像的远红外线全息记录材料。     

无明胶重铬酸盐全息图的后处理方法

本文介绍了无明胶重铬酸盐全息记录软片(简称NGD)的感光成像机理。实验研究了NGD全息图的后处理过程对衍射效率和表面灰雾的影响,给出了处理时间与衍射效率,表面灰雾的关系曲线,提出了一种适用于这种新材料后处理的方法。     

Photochemical preparation of aluminium oxide layers via vacuum ultraviolet irradiation of a polymeric hexanoato aluminium complex

By means of photochemical conversion of thin layers of a polymeric hexanoato aluminium complex as the precursor, thin aluminium oxide layers were prepared onto silicon wafers. The precursor compound was synthesized and characterized by several analytical techniques like NMR, FTIR, XPS, ICP, and found to be a polymeric aluminium-containing coordination compound which has been proposed to be a hydroxo-bridged aluminium chain with pendant hexanoyl side-chains ascertained as catena-poly[{di(κ-O,O-hexanoato)aluminium}(μ-hydroxo)] (PHAH). Thin layers deposited from a solution of PHAH in toluene onto silicon wafers were irradiated using VUV radiation from a xenon excimer lamp. The layers were characterized by XPS, XRD, XRR, and spectroscopic ellipsometry. VUV radiation with a radiant exposure of E = 36 J cm⁻² led to almost carbon-free amorphous layers with a composition close to that of alumina having a density of about 2.1 g cm⁻³. Thus, using the example of a polymeric aluminium complex, the potential of the photochemical conversion of metal complexes into oxides could be shown as an alternative method, in addition to sol–gel techniques, for the generation of thin plane metal-oxide layers at normal temperature and pressure.     

高温控制爆破中新型隔热材料的试验研究

通过室内和现场实验,着重比较了高温控制爆破中常用的石棉绳和新型隔热材料海泡石的隔热性能,最后推荐海泡石作为目前首选的隔热材料.     

新型多腔孔陶瓷复合保温材料的制备及性能研究

通过原料及配方的创新,以硅酸铝纤维、玻化微珠等为原料制备了一种新型多腔孔陶瓷复合保温材料。研究了材料的导热性能和显微结构。结果表明:材料导热系数低,热面温度200℃时导热系数仅为0.050 W/(m·K),热面温度600℃时导热系数为0.084 W/(m·K);材料内部结构疏松,存在多级配的孔隙结构,孔隙尺寸在微米级以下。利用马弗炉进行保温性能测试,保温材料内表面温度600℃,厚度仅为139mm时,稳态时外表面温度即可低于46℃,散热损失仅为158 W/m~2,远远低于标准规定的最大散热损失266 W/m~2。将材料制成1cm厚度的块材时,材料能产生较大弯曲而不损坏,有利于对电厂高温管道进行包覆。     

Material characterization of laminated composite materials using a three-point-bending technique

A three-point-bending technique is presented for identifying the elastic constants of laminated composite materials. In the proposed technique, three strains in the axial, lateral, and 45° directions on the bottom surface at the mid-span of a symmetric angle-ply beam subjected to three-point-bending testing are measured for elastic constants identification. The narrow beam theory together with the trial elastic constants is used to predict the theoretical strains of the beam. The theoretical and experimental strains of the beams are then used in a stochastic optimization method to identify the elastic constants of the beam. The accuracy and applications of the proposed technique are demonstrated by means of a number of examples on the elastic constants identification of graphite/epoxy (Gr/ep) or glass/epoxy (Gl/ep) laminated composite materials. The effects of specimen aspect ratio and thickness on the accuracy of the proposed method are investigated.