Sökning: "Nathan Ullberg"

Hittade 2 uppsatser innehållade orden Nathan Ullberg.

  1. 1. Characterizing optical and electrical properties of monolayer MoS2 by backside absorbing layer microscopy

    Master-uppsats, Uppsala universitet/Institutionen för fysik och astronomi

    Författare :Nathan Ullberg; [2020]
    Nyckelord :backside absorbing layer microscopy; BALM; monolayer MoS2; TMD; TMDC; 2D materials; nanomaterials; nanotechnology; refractive index; extinction coefficient; absorption coefficient; field-effect transistor; FET; semiconductors; optoelectronics; optics; raw image processing; chemical vapor deposition; CVD; in situ characterization;

    Sammanfattning : Nanomaterials are playing an increasing role in novel technologies, and it is important to develop optical methods to characterize them in situ.  To that end, backside absorbing layer microscopy (BALM) has emerged as a powerful tool, being capable to resolve sub-nanometer height profiles, with video-rate acquisition speeds and a suitable geometry to couple live experiments. LÄS MER

  3. 2. Field-effect transistor based biosensing of glucose using carbon nanotubes and monolayer MoS2

    Master-uppsats, Uppsala universitet/Molekyl- och kondenserade materiens fysik

    Författare :Nathan Ullberg; [2019]
    Nyckelord :field-effect transistor; biosensor; glucose; carbon nanotube; MoS2; 1D materials; 2D materials; nanotechnology; FET;

    Sammanfattning : As part of the EU SmartVista project to develop a multi-modal wearable sensor for health diagnostics, field-effect transistor (FET) based biosensors were explored, with glucose as the analyte, and carbon nanotubes (CNTs) or monolayer MoS2 as the semiconducting sensing layer.  Numerous arrays of CNT-FETs and MoS2-FETs were fabricated by photolithographic methods and packaged as integrated circuits. LÄS MER