Index Catalog // Arch : Northwestern University Institutional Repository

Ultrafast Photophysical Dynamics of Structural and Electronic Behavior in Hybrid and Nanostructured Semiconductors

Description:: Renewable energy technology, more so than ever before, is critical to the survival of humanity. For decades, concentrated efforts into designing and developing such novel devices resulted in the innovation of solar-driven photovoltaics that were competitive with nonrenewable alternatives. This thesis explores the dynamic behavior of alternative material candidates that...
Keyword:: electronic, structural, perovskite, spectroscopy, two-dimensional, and nanomaterials
Subject:: Physics, Chemistry, and Materials Science
Creator:: Panuganti, Shobhana
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 08/23/2023
Date Created:: 2023-01-01
Resource Type:: Dissertation
Alternate Identifier:: etdadmin_upload_1010644 and http://dissertations.umi.com/northwestern:16703

Towards Understanding Plasmon-Molecule Interactions using Raman Spectroscopy

Description:: The unique ability of plasmonic nanoparticles to localize and enhance resonant electromagnetic fields has enabled a wealth of discoveries from enhanced spectroscopies to driving chemical reactions on the nanoscale. In this thesis, we strive to both drive and observe chemistry on plasmonic surfaces. First, we examine the possibility of driving...
Keyword:: ultrafast, plasmon, Raman, spectroscopy, nanoparticles, and plasmonics
Subject:: Physical chemistry
Creator:: Ueltschi, Tyler W
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 01/21/2021
Date Created:: 2020-01-01
Resource Type:: Dissertation
Alternate Identifier:: etdadmin_upload_723530 and http://dissertations.umi.com/northwestern:15027

Quantitative Analytics for Spectroscopic Single-Molecule Localization Microscopy

Description:: Single-molecule localization microscopy (SMLM) has significantly stimulated the development of methods to quantitatively visualize and characterize biomolecules in vitro and in situ. SMLM is a class of super-resolution microscopy (SRM) techniques, which exploits the “on-off” switching of individual fluorescent molecules to estimate their location with nanometer precision and offers spatial...
Keyword:: single-molecule localization microscopy, spectroscopy, super-resolution microscopy, and quantitative imaging
Subject:: Biomedical engineering
Creator:: Davis, Janel Lesedi
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 01/21/2021
Date Created:: 2020-01-01
Resource Type:: Dissertation
Alternate Identifier:: http://dissertations.umi.com/northwestern:15048 and etdadmin_upload_733040

Electronic Implications of Thermal Processes in Nanomaterials

Description:: Extensive study of nanomaterial chemical and optical properties has enabled their integration into a variety of applications. However, less thoroughly investigated are the heat generation and dissipation processes of nanomaterials following optical excitation. These phenomena are of immense importance as thermal energy can distort a material’s structure, which has profound...
Keyword:: spectroscopy, quantum dots, nanoparticles, and plasmonics
Subject:: Chemistry
Creator:: Kirschner, Matthew S
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 02/12/2020
Date Created:: 2019-01-01
Resource Type:: Dissertation
Alternate Identifier:: http://dissertations.umi.com/northwestern:14600 and etdadmin_upload_661149

Probing the Transition from the Diffuse to the Molecular ISM

Description:: The study of the translucent interstellar medium (ISM) is important for understanding the behavior of the ISM as it transitions from hot, tenuous gas to dense, star-forming regions. This regime is know to be associated with the initial formation of persistent molecular material, and thus represents the first stages of...
Keyword:: spectroscopy and ISM
Subject:: Astronomy and Astrophysics
Creator:: Dirks, Cody
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 02/12/2020
Date Created:: 2019-01-01
Resource Type:: Dissertation
Alternate Identifier:: http://dissertations.umi.com/northwestern:14726 and etdadmin_upload_670810

Unraveling the Structure of Nanoparticles Encapsulated by Metal-Organic Frameworks for Regioselective and Bifunctional Catalysis

Description:: Composites of metal nanoparticles encapsulated by metal-organic frameworks (NP@MOFs) have recently emerged as intriguing heterogeneous catalysts for regioselective reactions. Sharing qualities of both zeolites and enzymes, these catalysts employ the pore system of a MOF to direct reactant access to the surface of nanoparticles. This dissertation seeks to better understand...
Keyword:: metal-organic frameworks, catalysis, spectroscopy, heterogeneous catalyst, and nanoparticles
Subject:: Chemical and Biological Engineering
Creator:: Cassandra Leigh Whitford
Owner:: Scholarly Digital Publishing
Date Uploaded:: 10/28/2019
Date Modified:: 10/28/2019
Date Created:: 2018-01-01
Resource Type:: Dissertation

Connecting Spin Dynamics and Electron Transfer Reactions in Organic Molecules with Multiple Unpaired Electrons

Description:: The work presented in this dissertation examines the interplay between electron transfer reactions and electron spin in photoactive organic molecules. Organic compounds that undergo electron transfer reactions after absorbing light are important in natural photosynthesis, photobiology, and synthetic photovoltaics. These electron transfer reactions depend on the spin states of the...
Keyword:: electron transfer, spin chemistry, photochemistry, spectroscopy, radical pair, and EPR
Subject:: Chemistry
Creator:: Noah Elliott Horwitz
Owner:: Scholarly Digital Publishing
Date Uploaded:: 01/10/2019
Date Modified:: 01/10/2019
Date Created:: 2017-01-01
Resource Type:: Dissertation

Towards the Precision Spectroscopy of a Single Molecular Ion

Description:: This dissertation presents some development of the single molecular ion precision spectroscopy experiment including construction of the project, spectroscopy state readout, and production of ultracold molecules. Such molecular ion spectroscopy aims at testing fundamental physics such as probing the time variation of electron-proton mass ratio. The theories and characterization of...
Keyword:: spectroscopy and physics
Subject:: Physics
Creator:: Yen-Wei Lin
Owner:: Scholarly Digital Publishing
Date Uploaded:: 02/13/2018
Date Modified:: 02/13/2018
Date Created:: 2016-01-01
Resource Type:: Dissertation

Spectroscopic Methods for Label-Free Optical Nanoscopy

Description:: It is becoming increasingly evident that the nanoscale organization and structure of macromolecules play a significant role in determining the function and properties of biological systems. To understand the relationships between biological structure and function at nanometer length scales, there is a need for methods which enable imaging of intact...
Keyword:: microscopy, cancer screening, label-free, spectroscopy, and nanoscale
Subject:: Biomedical Engineering
Creator:: John Edward Chandler
Contributor:: Vadim Backman
Depositor:: Chris Diaz
Owner:: Scholarly Digital Publishing
Date Uploaded:: 11/29/2017
Date Modified:: 12/01/2017
Date Created:: 2016-01-01
Resource Type:: Dissertation

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Ultrafast Photophysical Dynamics of Structural and Electronic Behavior in Hybrid and Nanostructured Semiconductors

Towards Understanding Plasmon-Molecule Interactions using Raman Spectroscopy

Quantitative Analytics for Spectroscopic Single-Molecule Localization Microscopy

Electronic Implications of Thermal Processes in Nanomaterials

Probing the Transition from the Diffuse to the Molecular ISM

Unraveling the Structure of Nanoparticles Encapsulated by Metal-Organic Frameworks for Regioselective and Bifunctional Catalysis

Connecting Spin Dynamics and Electron Transfer Reactions in Organic Molecules with Multiple Unpaired Electrons

Towards the Precision Spectroscopy of a Single Molecular Ion

Spectroscopic Methods for Label-Free Optical Nanoscopy

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