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PiFM @ Work - Spring Newsletter
Applications in Development at Molecular Vista
https://mailchi.mp/molecular-vista/pifm-spring-newsletter
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Our very own Dr. Sung Park, CEO Molecular Vista, will be giving a talk at Graphene 2018 Shenzhen, China, April 13, 3:15 pm, "Visible to mid-IR Nanoscale Characterization of 2D Materials via Photo-induced Force Microscopy."

http://graphene.sztspi.com/language/en/shenzhen-2018
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We're celebrating our 20th publication based on VistaScope! "Wavelength-Dependent Optical Force Imaging of Bimetallic Al−Au Heterodimers" examines the near-field interactions in bimetallic Al–Au plasmonic nanodisk heterodimers, where the coupling between the primitive plasmons of nanostructures composed of two different metals is studied. https://pubs.acs.org/doi/abs/10.1021/acs.nanolett.8b00020
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A Single Self-assembled Icosahedral Protein Cage Imaged via PiFM (Sample Courtesy: Ajitha Cristie-David and Neil Marsh, University of Michigan.)

This novel nanoscale icosahedral protein cage (theoretical edge length of 7 nm and ~14 nm volume diagonal) is designed to self-assemble using simple protein building blocks. A single protein cage is imaged via PiFM. While AFM topography image shows a nominally spherical shape, PiFM images hint at different facets whose edges and faces exhibit different amide I (1666 1/cm) signal strength. Two subsequent PiFM spectra taken on the same cage look repeatable, however, with minor variations in amide I region.
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A new PiFM application paper was published in "Nature Communications" by Prof. Zhang and Li, "A low cost and high performance polymer donor material for polymer solar cells." https://www.nature.com/articles/s41467-018-03207-x

PiFM measurements were taken by William Morrison from Molecular Vista in Nanjing: FTIR spectra, PiFM and PiFM+topography images of PTQ10: IDIC blend films based on FTIR absorption at different wave numbers (PTQ10, 805 1/cm, and IDIC, 1703 1/cm) with thermal annealing (TA) treatment.
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The Applications Lab at Molecular Vista presents the first in a series of video shorts. Episode 1: Nanoscale Silicon Strain Measurements explores nanoscale silicon stress using the Vista-IR Microscope. https://youtu.be/MtcA4dc-nmM
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PiFM visualizes the latent image of exposed EUV photoresist by using the reduction in the signal associated with the vibrational mode at 1760 1/cm. To read more: http://molecularvista.com/2018/01/exposed-euv-photoresist/
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Happy Valentine's Day! PiFM is all about love! It all comes down to tip sample interaction. (Image: heart-shaped defect on silicon substrate.)
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Come visit us in the New Year! http://molecularvista.com/ (Image: methyl ester hydrocarbons on silicon, "Snowflakes!")
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