本文介绍了 ThermoFisher Scientific 推出的 iDPC (Integrated Differential Phase Contrast, iDPC)成像技术的特点和优势，展示了代表性的应用实例。iDPC成像技术解决了目前STEM成像领域的两大瓶颈，即轻重元素原子的同时成像问题和对电子束敏感材料的成像问题。

2022年6月28日 · Herein, we construct isolated Co-motifs into purely siliceous MFI zeolite frameworks (Co-MFI) and reveal the location and microenvironment of the isolated Co active center in the MFI zeolite framework particularly beneficial for propane dehydrogenation (PDH).

2022年4月28日 · Combining iDPC-STEM imaging with an atmosphere system, we achieved in situ observation of the dynamic subcell topological deformation of MFI channels with atomic resolution while the whole MFI zeolite single-crystal structure was maintained nearly unchanged. We revealed the intrinsic mechanism of a molecule breaking through the pore size limit.

2024年5月15日 · Here we show the design of efficient Rh-zeolite catalysts, in which subnanometre Rh clusters are selectively confined in the sinusoidal ten-membered-ring channels of MFI zeolite, for the...

2025年1月2日 · In this work, we have developed a highly efficient catalyst for MCH dehydrogenation reaction by incorporating subnanometer PtFe clusters with precisely controlled composition and location within a...

2021年4月21日 · Using iDPC-STEM imaging, we can clearly resolve the atomic structures of the ZSM-5 framework and the orientations of the PX molecules. According to these orientations we can then directly...

清华大学魏飞教授课题组继2021年4月21日在Nature发文” A single-molecule van der Waals compass”，使用积分差分相位衬度扫描透射电子显微技术（iDPC-STEM）实现了单个对二甲苯（PX）分子在准二维ZSM-5沸石骨架内的直接成像。

Here we show the design of eficient Rh-zeolite catalysts, in which subnanometre Rh clusters are selectively confined in the sinusoidal ten-membered-ring channels of MFI zeolite, for the …

2022年4月28日，清华大学魏飞、 张晨曦 、陈晓等人通过idpc-stem成像技术实时原位观测zsm-5分子筛的苯分子吸附-脱附过程，吸附分子的形貌变化、分子筛的形貌变化。

The recent development of STEM techniques such as integrated differential phase contrast (iDPC) has allowed for studies on beam-sensitive specimens, including studies of organic...