Micron-sized spheres of mesoporous styrene-divinylbenzene (Sty-DVB) copolymer were produced by su... more Micron-sized spheres of mesoporous styrene-divinylbenzene (Sty-DVB) copolymer were produced by suspension polymerisation in the presence of inert diluents. Using these mesoporous microspheres as a template, optically stable CdS nanoparticles have been synthesized. To characterize these CdS nanoparticles, Raman spectroscopy and micro-photoluminescence were used. We have observed enhanced emission and lasing action at certain wavelengths that correspond to the whispering gallery (WG) modes of the microspheres. High optical stability and low threshold value make this optical system promising in microlaser applications.
London School of Economics and Political Science, Oct 21, 2020
Since the end of September, the conflict between Armenia and Azerbaijan over the region of Nagorn... more Since the end of September, the conflict between Armenia and Azerbaijan over the region of Nagorno-Karabakh has been reignited. Rovshan Ibrahimov and Murad Muradov present the Azerbaijani perspective on the roots of the current escalation and the way forward to a peaceful resolution. Between 1988-94, in the shadow of the break-up of the Soviet Union, Armenia and Azerbaijan fought a war within the borders of Azerbaijan. The outcome was the occupation of the enclave of Nagorno-Karabakh-where there was at that time and remains today an ethnic Armenian majority-and an additional seven neighbouring districts surrounding Nagorno-Karabakh where Azerbaijanis had always constituted an overwhelming majority. As a result of the invasion, 600,000 ethnic Azeris lost their homes and became Internally Displaced Persons (IDPs). A further 400,000 Azeri refugees also fled their homes within Armenia to Azerbaijan as a result of persecution. The debate over the cultural ownership and heritage of Nagorno-Karabakh and the seven occupied territories are today subject to widespread debate-but not widespread appreciation of the historical facts. It cannot be disputed that both Azerbaijani and Armenian, Christian and Muslim history and culture run deep across this region and for over one and a half thousand years. It is perhaps though to be expected that the further the journey is taken back into that history, the further it becomes subject to mythmaking.
Micron-sized spheres of mesoporous styrene-divinylbenzene (Sty-DVB) copolymer were produced by su... more Micron-sized spheres of mesoporous styrene-divinylbenzene (Sty-DVB) copolymer were produced by suspension polymerisation in the presence of inert diluents. Using these mesoporous microspheres as a template, optically stable CdS nanoparticles have been synthesized. To characterize these CdS nanoparticles, Raman spectroscopy and micro-photoluminescence were used. We have observed enhanced emission and lasing action at certain wavelengths that correspond to the whispering gallery (WG) modes of the microspheres. High optical stability and low threshold value make this optical system promising in microlaser applications.
London School of Economics and Political Science, Oct 21, 2020
Since the end of September, the conflict between Armenia and Azerbaijan over the region of Nagorn... more Since the end of September, the conflict between Armenia and Azerbaijan over the region of Nagorno-Karabakh has been reignited. Rovshan Ibrahimov and Murad Muradov present the Azerbaijani perspective on the roots of the current escalation and the way forward to a peaceful resolution. Between 1988-94, in the shadow of the break-up of the Soviet Union, Armenia and Azerbaijan fought a war within the borders of Azerbaijan. The outcome was the occupation of the enclave of Nagorno-Karabakh-where there was at that time and remains today an ethnic Armenian majority-and an additional seven neighbouring districts surrounding Nagorno-Karabakh where Azerbaijanis had always constituted an overwhelming majority. As a result of the invasion, 600,000 ethnic Azeris lost their homes and became Internally Displaced Persons (IDPs). A further 400,000 Azeri refugees also fled their homes within Armenia to Azerbaijan as a result of persecution. The debate over the cultural ownership and heritage of Nagorno-Karabakh and the seven occupied territories are today subject to widespread debate-but not widespread appreciation of the historical facts. It cannot be disputed that both Azerbaijani and Armenian, Christian and Muslim history and culture run deep across this region and for over one and a half thousand years. It is perhaps though to be expected that the further the journey is taken back into that history, the further it becomes subject to mythmaking.
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