Browsing by Contributor "Koppens, Frank H. L."
Now showing items 1-20 of 20
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Characterization and implementation of resistance-to-time-to-digital readout system for novel photoresistor based on graphene
(Universitat Politècnica de Catalunya, 2017-09-07)
Master thesis
Restricted access - confidentiality agreement -
Detection of graphene motion through light-matter interactions
(Universitat Politècnica de Catalunya, 2012-09-06)
Master thesis
Open Access[ANGLÈS] In this thesis, we study both experimentally and theoretically the optical detection of the motion of graphene membranes based on fluorescence quenching of the emitters close to graphene. Fluorescence quenching ... -
Diffuse reflectance spectroscopy characterization of molecular absorption via graphene based photodetectors
(Universitat Politècnica de Catalunya, 2018-09)
Master thesis
Open AccessThis Master dissertation explores diffuse reflection spectroscopy as a viable tool for analytical chemistry, both quantitatively and qualitatively. In-vitro optical phantoms are created to mimic the turbid diffuse environments ... -
Exciton engineering with 2D heterostructures.
(Universitat Politècnica de Catalunya, 2020-09-08)
Master thesis
Open AccessQuantum emitters have an important role in many quantum technologies as quantum sensing and metrology, quantum computation or quantum information. They must be isolated from their environment, but paradoxically some external ... -
Exploring flatland nano-optics with graphene plasmons
(Universitat Politècnica de Catalunya, 2017-05-11)
Doctoral thesis
Open AccessPlasmons are charge oscillations coupled to electromagnetic radiation. One of their most intriguing properties is their deep subwavelength confinement resulting in strongly enhanced light-matter interaction. Metal plasmons ... -
Exploring intersubbands in 2D materials
(Universitat Politècnica de Catalunya, 2019-04-16)
Doctoral thesis
Open AccessTransition metal dichalcogenides (TMDs) are semiconducting layered materials that can be isolated up to the limit of a single atomic layer. Next to graphene, they are some of the most intensively studied materials within ... -
Exploring twisted bilayer graphene with nano-optics
(Universitat Politècnica de Catalunya, 2021-10-20)
Doctoral thesis
Open AccessNano-optics studies the behaviour of light on the nanoscale. In particular, it probes the interaction of light with objects, often of nanometre-size, and reveals fine details of the material's optical properties. Optoelectronics ... -
Fabrication and characterization of graphene nanostructures
(Universitat Politècnica de Catalunya, 2012-09-06)
Master thesis
Open Access[ANGLÈS] We fabricate graphene nanostructures for experimental studies on graphene plasmonics and graphene-quantum dot interactions. We use a focused ion beam to mill structures in a substrate, and deposit graphene on top. ... -
Graphene based optical interconnects and IR photodetectors
(Universitat Politècnica de Catalunya, 2023-01-23)
Doctoral thesis
Open Access(English) Despite the extensive research in the semiconductor industry, Moore’s law is finally slowing down due to increased complexity. Hence, intense efforts are being carried out to explore hybrid solutions by adding ... -
Graphene optoelectronics from the visible to the mid-infrared
(Universitat Politècnica de Catalunya, 2015-12-04)
Doctoral thesis
Open AccessSince its discovery in 2004, graphene, a one-atom-thick layer of carbon atoms arranged in a hexagonal lattice, has attracted huge interest from the scientific community due to its extraordinary electronic, mechanical, and ... -
Graphene plasmonic enhanced detectors for mid-infrared and terahertz range
(Universitat Politècnica de Catalunya, 2020-07-16)
Master thesis
Restricted access - confidentiality agreement
Covenantee: Universitat Autònoma de Barcelona / Universitat de Barcelona -
Integration and electrical manipulation of single-photon sources in 2-dimensional devices
(Universitat Politècnica de Catalunya, 2021-12-09)
Doctoral thesis
Open AccessQuantum nanophotonics aims at studying the interaction between matter and single photons at the nanoscale. Nanoscopic solid state light sources can be placed in near proximity to other photonic elements to engineer their ... -
Intergration of graphene with mid-IR optical materials
(Universitat Politècnica de Catalunya, 2019-09-10)
Master thesis
Restricted access - author's decision -
Photoconductivity in High-Quality Graphene
(Universitat Politècnica de Catalunya, 2015-09-08)
Master thesis
Open AccessGraphene is a relatively new material with unique properties that found application in the field of electronics and optoelectronics. A broadband absorption makes it especially interesting for photodetection applications. ... -
Photodetectors based on graphene pn-junctions for mid-infrared and terahertz range
(Universitat Politècnica de Catalunya, 2022-01-27)
Doctoral thesis
Restricted access - confidentiality agreementLong wavelength light contains the infrared and terahertz (THz) spetral range of the spectrum. This wavelength range spans approximately from 1 µm to 1 mm. Several applications can be explored in this spectral range such ... -
Plasmonically enhanced light absorption in graphene nanoribbons
(Universitat Politècnica de Catalunya, 2012-09-06)
Master thesis
Open Access[ANGLÈS] Light absorption plays a crucial role in both optical detectors and photovoltaics. In order to improve the light absorption properties of materials different measures can be taken. This thesis considers light ... -
Resonances in graphene plasmons
(Universitat Politècnica de Catalunya, 2014-09-09)
Master thesis
Open Access[ANGLÈS] Graphene is used as a novel, versatile plasmonic material. The most common way to implement resonant light-plasmon coupling is to etch graphene into periodic nanostructures, which is invasive. Here, we study a ... -
Single quantum emitter manipulation with 2D materials
(Universitat Politècnica de Catalunya, 2018-05-22)
Doctoral thesis
Open Access
Covenantee: Università degli Studi di FirenzePhotonics aims to manipulate light by controlling its interactions with matter to enable novel optical technologies for communication, information processing and sensing. Current efforts strive to enter the regime of quantum ... -
Study of graphene hybrid heterostructures for linear and nonlinear optics
(Universitat Politècnica de Catalunya, 2020-06-23)
Doctoral thesis
Open AccessGraphene is the first of the 2D-material family. It is formed by carbon atoms arranged in a honeycomb lattice, which confers it intriguing physical properties that are still being discovered nowadays. A fundamental advantage ... -
Ultrafast optoelectronics in 2D materials and their heterostructures
(Universitat Politècnica de Catalunya, 2017-09-05)
Doctoral thesis
Open AccessUnderstanding and improving how light is converted into electricity in materials is one of the central goals in the field of optoelectronics. This basic physical process lies at the heart of several major technologies, ...