Search for dissertations about: "SQUIDs"

Showing result 1 - 5 of 25 swedish dissertations containing the word SQUIDs.

2. 1. Immunoassays using high-Tc SQUIDs

   Author : Fredrik Öisjöen; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; YBCO; antigen.; magnetic nanoparticles; immunoassays; antibody; SQUID; High-Tc;

   Abstract : The development of a system for immunoassays using highly sensitive high-Tc superconducting quantum interference devices (SQUIDs) and magnetic nanoparticles (MNPs) is described in this thesis.High-Tc SQUIDs were fabricated using pulsed laser deposition and photolithography. READ MORE

4. 2. Fabrication and noise properties of high-Tc SQUIDs with multilayer superconducting flux transformers

   Author : Maxim Chukharkin Leonidovich; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; YBCO; High-Tc SQUIDs; SQIFs; ulf-NMR; SQUID magnetometers;

   Abstract : The thesis describes the development of highTc superconducting quantum interference devices (SQUIDs) with multilayer thin film flux transformers. High-Tc SQUID magnetometers are promising in various biomedical applications, including magnetoencephalography (MEG) and ultra-low field magnetic resonance imaging (ulf-MRI). READ MORE

5. 3. Low Noise Amplifiers Based on High TC SQUIDs

   Author : Jakob Blomgren; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : This thesis describes the development, fabrication, performance and applications of liquid nitrogen cooled voltage amplifiers based on high temperature superconducting quantum interference devices (SQUIDs). The SQUID based voltage amplifier is intended for characterization of electrical and noise properties of devices with resistance around and below 1 Ohm. READ MORE

6. 4. High-Tc SQUIDs for biomedical applications: immunoassays, MEG, and ULF-MRI

   Author : Fredrik Öisjöen; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : This thesis describes high transition temperature superconducting quantum interference devices (high-Tc SQUIDs) for magnetic immunoassays (MIAs), magnetoencephalography (MEG) and ultra-low field magnetic resonance imaging (ULF-MRI).High-Tc dc SQUID sensors were fabricated in single layers of YBa2Cu3O7−δ deposited by pulsed laser deposition and patterned using photolithography on 10×10 mm2 SrTiO3 bicrystal substrates. READ MORE

7. 5. On-scalp MEG using high-Tc SQUIDs: Measuring brain activity with superconducting magnetometers

   Author : Christoph Pfeiffer; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; high-Tc SQUID; neuroimaging; magnetoencephalography; localization; on-scalp MEG; sensor array; magnetometer;

   Abstract : This thesis describes work done towards realizing on-scalp magnetoencephalography (MEG) based on high critical temperature (high- T c) superconducting quantum interference device (SQUID) sensors. MEG is a non-invasive neuroimaging modality that records the magnetic fields produced by neural currents with good spatial and high temporal resolution. READ MORE