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Ultra-short pulsed Tm- and Er-doped all-fiber MOPA lasers and supercontinuum sources.
(Doctoral thesis, 2016-12-12)The present work describes the results of the development of a family of novel diode-pumped ultra-short and short pulsed Er- and Tm-fiber laser systems in the “eye-safe” near- and mid-Infrared (mid-IR) wavelength range for ... -
Ultrabroad Continuous-Wave Tuning of Ceramic Cr:ZnSe and Cr:ZnS Lasers
(Chapter, 2010)Using a single set of optics, we demonstrate ultrabroad tuning over more than 1300 nm from 1973 to 3349 nm in Cr:ZnSe and from 1962 to 3195 nm in Cr:ZnS at <10 GHz linewidth. -
Ultrafast control of spin interactions in honeycomb antiferromagnetic insulators
(Journal article; Peer reviewed, 2019)Light enables the ultrafast, direct, and nonthermal control of the exchange and Dzyaloshinskii-Moriya interactions. We consider two-dimensional honeycomb lattices described by the Kane-Mele-Hubbard model at half filling ... -
Ultrafast fiber-based lasers beyond 2 µm
(Chapter, 2017)The talk reviews recent advances in fiber based ultrafast mid-IR lasers and frequency combs, outlines the trends in materials as well as novel approaches for generation of ultra-broadband spectra above 2 mm. -
Ultrafast generation and dynamics of isolated skyrmions in antiferromagnetic insulators
(Peer reviewed; Journal article, 2019)Based on atomistic spin dynamics simulations, we report the ultrafast generation of single antiferromagnetic (AFM) skyrmions in a confined geometry. This process is achieved through an effective magnetic field induced by ... -
Ultrafast manipulation of Heisenberg exchange and Dzyaloshinskii–Moriya interactions in antiferromagnetic insulators
(Master thesis, 2019)Light enables ultrafast, direct and nonthermal control of the exchange and Dzyaloshinskii-Moriya interactions. We consider two-dimensional honeycomb lattices described by the Kane-Mele-Hubbard model at half filling and in ... -
Ultrafast nonlocal collective dynamics of Kane plasmon-polaritons in a narrow-gap semiconductor
(Journal article; Peer reviewed, 2019)The observation of ultrarelativistic fermions in condensed-matter systems has uncovered a cornucopia of novel phenomenology as well as a potential for effective ultrafast light engineering of new states of matter. While ... -
Ultrahigh-pressure form of Si O2 glass with dense pyrite-type crystalline homology
(Peer reviewed; Journal article, 2019)High-pressure synthesis of denser glass has been a longstanding interest in condensed-matter physics and materials science because of its potentially broad industrial application. Nevertheless, understanding its nature ... -
Ultrasound and magnetic resonance imaging for group stratification and treatment monitoring in the transgenic adenocarcinoma of the mouse prostate model
(Journal article; Peer reviewed, 2020)Background:The transgenic adenocarcinoma of the mouse prostate (TRAMP) is a widelyused genetically engineered spontaneous prostate cancer model. However, both thedegree of malignancy and time of cancer onset vary. While ... -
Ultrasound Beamforming based on Deep Learning
(Master thesis, 2020)Stråleforming blir brukt av enheter som tar opp eller sender signaler med flere enn én kanaler for å gi sterkere signalstyrke i en gitt retning. Innen ultralyd kan bedre algoritmer for stråleforming gi økt bildekvalitet, ... -
Ultrasound for the delivery of a nanocarrier across biological barriers in tumors: impact of cavitation and acoustic radiation force
(Doctoral theses at NTNU;2020:56, Doctoral thesis, 2020)Ultrasound for the delivery of a nanocarrier across biological barriers in tumors: impact of cavitation and acoustic radiation force Although conventional chemotherapy is the still one of the most important treatment ... -
Ultrasound Improves the Delivery and Therapeutic Effect of Nanoparticle-Stabilized Microbubbles in Breast Cancer Xenografts
(Journal article; Peer reviewed, 2017)Compared with conventional chemotherapy, encapsulation of drugs in nanoparticles can improve efficacy and reduce toxicity. However, delivery of nanoparticles is often insufficient and heterogeneous because of various ... -
Ultrasound in Imaging and Delivery of Nanomedicine in Cancer Tissue
(Doctoral thesis at NTNU;2015:27, Doctoral thesis, 2015)Nanotechnology in therapy of solid tumors is a strategy where the cytotoxic drugs are encapsulated into nano-sized particles. It is expected that therapy using nanomedicine will result in both increased specificity of the ... -
Ultrasound radiation force transport of drugs in tumors
(Master thesis, 2013)Delivery of chemotherapeutic agents administered intravenously tosolid tumors tissue in optimal quantities is one of the challenges in theclinic. However, ultrasound improves the delivery of the chemothera-peutic agents ... -
Ultrasound radiation force transport of drugs in tumors
(Master thesis, 2013)Chemotherapy effectiveness not only depends on drug penetration extent in target tissues or tumor cells, but also depends on drug suppression extent by the normal tissues and cells. Ultrasound acts as an important role to ... -
Ultrasound Stimulated Release of Liposomes
(Master thesis, 2008)A prerequisite for successful cancer therapy (drug delivery) is that the cytotoxic agents reach all cancer cells and inactivates them and this requires triggerable release of liposomes in order to delivery a high local ... -
Ultrasound-mediated delivery and distribution of polymeric nanoparticles in the normal brain parenchyma of a metastatic brain tumour model
(Journal article; Peer reviewed, 2018)The treatment of brain diseases is hindered by the blood-brain barrier (BBB) preventing most drugs from entering the brain. Focused ultrasound (FUS) with microbubbles can open the BBB safely and reversibly. Systemic drug ... -
Ultrasound-mediated delivery enhances therapeutic efficacy of MMP sensitive liposomes
(Peer reviewed; Journal article, 2020)To improve therapeutic efficacy of nanocarrier drug delivery systems, it is essential to improve their uptake and penetration in tumour tissue, enhance cellular uptake and ensure efficient drug release at the tumour site. ... -
Ultrasound-mediated delivery of nanomedicine across biological barriers - for improved treatment of cancer and diseases in the brain
(Doctoral theses at NTNU;2017:190, Doctoral thesis, 2017)Despite major progress in the field of cancer research during the last decades, cancer remains a leading cause of death worldwide. Treatment with conventional chemotherapy is limited by inadequate delivery to the tumor and ... -
Unconventional Superconductivity on a Topological Insulator
(Journal article; Peer reviewed, 2010)We study proximity-induced superconductivity on the surface of a topological insulator (TI), focusing on unconventional pairing. We find that the excitation spectrum becomes gapless for any spin-triplet pairing, such that ...