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Controlled Nanometric Phase Transitions of Phospholipid Membranes by Plasmonic Heating of Single Gold Nanoparticles

机译:单个金纳米粒子的等离子体加热控制磷脂膜的纳米相变。

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摘要

The development of remotely controlled nanoscopic sources of heat Is essential for investigating and manipulating temperature sensitive processes at the nanoscale. Here, we use single gold nanoparticles to rapidly deposit controlled amounts of heat in nanoscopic regions of defined size. This allows us to induce and control nanoscale reversible gel-fluid phase transitions in phospholipid membranes. We exploit the optical control over the phase transition to determine the velocity of the fluid phase front into the gel phase membrane and to guide the nanoparticles to specific locations. These results illustrate how single gold nanoparticles enable local thermodynamic investigation and manipulation on nanoscale (bio-) systems.
机译:远程控制的纳米级热源的开发对于研究和处理纳米级的温度敏感过程至关重要。在这里,我们使用单个金纳米颗粒在确定大小的纳米区域内快速沉积受控量的热量。这使我们能够诱导和控制磷脂膜中的纳米级可逆凝胶-流体相变。我们利用对相变的光学控制来确定液相进入凝胶相膜的速度并引导纳米颗粒到达特定位置。这些结果说明了单个金纳米颗粒如何在纳米级(生物)系统上实现局部热力学研究和操纵。

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