Vibrational spectrochemical imaging studies of materials from macro to nanoscale

关键的化学相互作用发生在纳米尺度上，但对每个维度都有影响。我和我的学生解决了对材料化学进行成像所固有的挑战，使用模型系统来证明原理，从千分之一米到十亿分之一米的长度尺度。具体地说，我们使用一种名为振动光谱的技术，用可见光和红外光探测物质的化学成分。通过这个项目，我努力成为振动光谱化学成像领域的世界领先者，培训年轻科学家掌握开创性的技术，以解决与重要材料和环境问题相关的难题。我的短期目标代表着从纳米到宏观分辨率的现实世界问题，从可再生资源制成的新材料到气候变化对北冰洋海冰硅藻的影响，这些都是海洋食物网的关键成员。我们将已确立的振动光谱原理带到了科学前沿，使用了最好的衍射限制光学技术，这是我们最新获得专利的红外层析成像附件，以及打破红外衍射限制的超分辨率技术。我们设计了新的方法来保留天然的分子结构，使我们能够阐明局部化学，并对这些以前无法访问的微米和纳米级数据做出准确的解释。

Critical chemical interactions occur at the nanoscale but have impact at every dimension. My students and I tackle the challenges inherent in imaging the chemistry of materials at length scales from one thousandth to one billionth of a meter, using model systems for proof of principle. Specifically, we probe the chemical composition of matter with visible and infrared light, using a technique called vibrational spectroscopy. With this program, I strive to be a world leader in vibrational spectrochemical imaging, training young scientists in groundbreaking techniques to solve puzzles related to important materials and environmental issues. My short term objectives represent real-world problems that span the nano to macro resolution scale, in new materials made from renewable resources to the impact of climate change on Arctic sea ice diatoms, key members of the marine food web. We take established principles of vibrational spectroscopy to the scientific frontier, using best diffraction-limited optics, our newly-patented accessory for infrared tomography, and super-resolution techniques that break the infrared diffraction limit. We devise novel methods to retain native molecular architecture, allowing us to elucidate localized chemistry and make accurate interpretations of this previously inaccessible micro and nanoscale data.