Preliminary Informative Results on Glass Tesserae from V^th-VI^thCentury AD Mosaics in Albania

This paper discusses some preliminary results regarding raw materials used in ancient glass mosaic tesserae. The studied glass tesserae were recovered during the archeological excavation of the mosaics at the Christian basilicas in Byllis, Lin and Elbasan, which according to the archeologists were built between the end of Vth and beginning of VIth century AD. In the recent years, several studies are performed on opaque coloured glass but in Albania only few studies are performed in this field. These samples are analyzed using optical microscopy and micro X-ray fluorescence. Optical microscopy is used to analyse the microstructure of the glass tesserae. The main elements and trace elements are determined qualitatively from measurements performed with micro X-ray fluorescence. The glass matrix resulted to be very heterogeneous with too many inclusions dispersed on it. Several elements which are responsible for the color and opacity of glass tesserae are determined. Comparisons are made between the same colors of glass tesserae from different archaeological sites.

Tessera专注微电子和成像与光学技术

Tessera 公司创立于1990年，公司的微电子解决方案以芯片规模、3D与晶圆级的封装技术，以及高密度的衬底与静音散热技术，支持客户生产体积更小、功能更强的设备。Tessera成像与光学解决方案在电子产品中提供低成本、高质量的相机功能，其中包括图像传感器封装、晶圆级光学设计与图像增强技术。