PiFM @ Work

Lithium PLatelets

Nanochemical Mapping of Lithium Platelets

PiFM imaging shows a depletion of lithium from the edges of the platelets in a rechargeable Li-ion battery: Rechargeable lithium-ion (Li-ion) batteries continue to be the most prevalent form of electrical energy storage technology with applications in portable electronics and electric vehicles. One of the limiting factors in their performance is chemical and morphological changes […] Read more

TERS6

Come and join us at TERS6! We’re looking forward to showcasing the PiFM technique and the Vista-IR instrument at the upcoming TERS6 event.  We’ll have many activities during the conference including: Live Demos – Live demonstrations of the instrument and PiFM technique throughout the show, Wednesday (8/16), Thursday (8/17) and Friday (8/18) Your Samples – […] Read more

Nanoscale Chemical Mapping with Extreme Surface Sensitivity

Since the dipole-dipole interaction between the induced sample dipole and the image tip dipole varies with ~ 1/z4 dependence where z is the tip-sample spacing, PiFM is expected to provide extreme surface sensitivity. We use PS(polystyrene)-b-PTMSS[poly(4-trimethylsilylstyrene)] block copolymer (BCP) with horizontal lamellae to demonstrate the surface sensitivity. The pitch L0 of the BCP is ~22 […] Read more

PiFm image of PS-b-PMMA

Our Paper “Nanoscale chemical imaging by photo-induced force microscopy” Published Today

Our paper titled “Nanoscale chemical imaging by photo-induced force microscopy” is published on the online publication of Science journal, Science Advances, today. The paper introduces infrared PiFM imaging on two block copolymer systems, PS-b-PMMA and PS-b-P2VP. By using infrared wavelengths that correspond to the absorption bands for each of the polymer components, each chemical component […] Read more

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