Colloidal nanoparticles: Mechanisms of laser synthesis and interactions
Laser ablation in liquids is now commonly used to produce colloidal nanoparticles (NPs) that have found numerous applications in different areas. In the experiments, NPs of different materials can be rather easily produced by using laser systems with various pulse durations, shape, wavelengths, and fluence. Here, we focus our attention on metal nanoparticles produced by ultra-short laser pulses.
Laser ablative nanostructuring of Au in liquid ambience in continuous wave illumination regime
Gold nanoparticles (Au NPs) attract particular attention because of their unique size-dependent chemical, physicochemical and optical properties and, hence, their potential applications in catalysis, nanoelectronics, photovoltaics and medicine. In particular, laser-produced colloidal nanoparticles are not only biocompatible, but also reveal unique chemical properties. Different laser systems can be used for synthesis of these colloids, varying from continuous wave (CW) to ultra-short femtosecond lasers. The choice of an optimum laser system is still a challenge in application development. To bring more light at this issue, we investigate an influence of laser parameters on nanoparticle formation from a gold target immersed in deionized water. First, an optical diagnostics of laser-induced hydrodynamic processes taking place near the gold surface is performed. Then, gold nanoparticle colloids with average particle sizes smaller than 10 nm and a very narrow dispersion are shown to be formed by CW laser ablation. The obtained results are compared with the ones obtained by using the second harmonics and with previous results obtained by using femtosecond laser systems.
The Area of Freedom, Security and Justice ten years on: Successes and future challenges under the Stockholm Programme. CEPS Paperbacks. June 2010
This book celebrates the tenth anniversary of the Area of Freedom, Security and Justice (AFSJ) by bringing together the views of key practitioners and policy-makers who have played an outstanding role in thinking about and shaping EU policies on freedom, security and justice. 
 
Ten years ago, the member states transferred competences to the EU for law and policy-making in the fields of immigration, asylum and border controls, and began the transfer process for criminal justice and policing. This decade of European cooperation on AFSJ policies has experienced very dynamic convergence, the enactment of a large body of European law and the setting-up of numerous EU agencies working in these domains. Such dynamism in policy-making has not been without challenges and vulnerabilities, however. As this collective volume shows, the main dilemmas that lie ahead relate to an effective (while more plural) institutional framework under the Treaty of Lisbon, stronger judicial scrutiny through a greater role for national courts and the Court of Justice in Luxembourg, better mechanisms for evaluating and monitoring the implementation of EU AFSJ law and a more solid fundamental rights strategy. The contributions in this volume address the progress achieved so far in these policy areas, identify the challenges for future European cooperation in the AFSJ and put forward possible paths for making more progress in the next generation of the EU’s AFSJ.