Search Results - "Kearns, Nicholas M"
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Broadband 2D electronic spectrometer using white light and pulse shaping: noise and signal evaluation at 1 and 100 kHz
Published in Optics express (03-04-2017)“…We have developed a broad bandwidth two-dimensional electronic spectrometer that operates shot-to-shot at repetition rates up to 100 kHz using an acousto-optic…”
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Two-Dimensional Electronic Spectroscopy Reveals Excitation Energy-Dependent State Mixing during Singlet Fission in a Terrylenediimide Dimer
Published in Journal of the American Chemical Society (26-12-2018)“…Singlet fission (SF) is a spin-allowed process in which a singlet exciton, 1(S1S0), within an assembly of two or more chromophores spontaneously down-converts…”
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Impact of non-equilibrium molecular packings on singlet fission in microcrystals observed using 2D white-light microscopy
Published in Nature chemistry (01-01-2020)“…Singlet fission, the process of splitting a singlet exciton into two triplet excitons, has been proposed as a mechanism for improving the efficiency of future…”
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Two-Dimensional White-Light Spectroscopy Using Supercontinuum from an All-Normal Dispersion Photonic Crystal Fiber Pumped by a 70 MHz Yb Fiber Oscillator
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (04-04-2019)“…We report on a new broadband, ultrafast two-dimensional white-light (2DWL) spectrometer that utilizes a supercontinuum pump and a supercontinuum probe…”
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Multidimensional Spectroscopy on the Microscale: Development of a Multimodal Imaging System Incorporating 2D White-Light Spectroscopy, Broadband Transient Absorption, and Atomic Force Microscopy
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (19-12-2019)“…The dynamics of electronic transitions in solid-state materials are closely linked to microscopic morphology, but it is challenging to simultaneously…”
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Polarization-Controlled Two-Dimensional White-Light Spectroscopy of Semiconducting Carbon Nanotube Thin Films
Published in Journal of physical chemistry. C (04-08-2016)“…Polarized two-dimensional white-light (2D-WL) spectra are reported for thin films of semiconducting carbon nanotubes. The orientational responses for 4-point…”
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Ultrafast Exciton Hopping Observed in Bare Semiconducting Carbon Nanotube Thin Films with Two-Dimensional White-Light Spectroscopy
Published in The journal of physical chemistry letters (02-06-2016)“…We observe ultrafast energy transfer between bare carbon nanotubes in a thin film using two-dimensional (2D) white-light spectroscopy. Using aqueous two-phase…”
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Development of Ultrabroadband Nonlinear Spectroscopy and Microscopy with Applications to Materials Systems
Published 01-01-2018“…Two-dimensional electronic spectroscopy (2DES) is an optical spectroscopic technique which correlates excitation and detection frequencies of photogenerated…”
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Dissertation