3 papers
physics.ins-det2019
Observation of Nanoscale Opto-Mechanical Molecular Damping; Origin of Spectroscopic Contrast in Photo Induced Force Microscopy
Mohammad A. Almajhadi, Syed Mohammad Ashab Uddin, H. Kumar Wickramasinghe
We experimentally investigated the contrast mechanism of infrared photoinduced force microscopy (PiFM) for recording vibrational resonances. Extensive experiments have demonstrated…
physics.app-ph2018
Near-Field Nanoprobing Using Si Tip-Au Nanoparticle Photoinduced Force Microscopy with 120:1 Signal-to-Noise Ratio, Sub-6-nm Resolution
Mohsen Rajaei, Mohammad Ali Almajhadi, Jinwei Zeng +1
A nanoscopy technique that can characterize light-matter interactions with ever increasing spatial resolution and signal-to-noise ratio (SNR) is desired for spectroscopy at molecul…
physics.optics2017
Detecting stimulated-Raman responses of few molecules using Optical Forces
Venkata Ananth Tamma, Lindsey M. Beecher, Jennifer S. Shumaker-Parry +1
We demonstrate the stimulated Raman near-field microscopy of few molecules, measured only using near-field optical forces thereby eliminating the need for far-field optical detecti…