Browsing Fysisk institutt by Author "Pabst, Oliver"

Now showing items 1-11 of 11

  • Diabetic foot assessment using skin impedance in a custom made sensor-sock 
    Tronstad, Christian; Amini, Maryam; Olesen, Eline; Qvigstad, Elisabeth; Pabst, Oliver; Martinsen, Tormod; Abie, Sisay Mebre; Martinsen, Ørjan Grøttem; Hisdal, Jonny; Jenssen, Trond G.; Kalvøy, Håvard (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Abstract Diabetic peripheral neuropathy (DPN) may lead to several changes in the skin, and some of these may influence the skin impedance spectrum. In the present study we have developed a prototype solution for ...
  • Electrical properties of human skin: From linear recordings of exogenous electrodermal activity to non-linear memristor measurements 
    Pabst, Oliver (Doctoral thesis / Doktoravhandling, 2018)
    This thesis is all about applying an electrical voltage to human skin and measuring the corresponding electrical current. A recording (on any tissue) is non-linear when the electrical properties are affected by the applied ...
  • Information can be stored in the human skin memristor which has non-volatile memory 
    Pabst, Oliver; Martinsen, Ørjan Grøttem; Chua, Leon (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Much is already understood about the anatomical and physiological mechanisms behind the linear, electrical properties of biological tissues. Studying the non-linear electrical properties, however, opens up for the influence ...
  • Interpretation of the pinched point position in human skin memristor measurements 
    Pabst, Oliver; Martinsen, Ørjan Grøttem (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
    It is shown that human skin acts like a memristor but systematic studies on skin memristance are not published, yet. If e.g., a low frequency voltage is applied to human skin and the current is measured, a hysteresis loop ...
  • Numerical Study of Non-Linear Effects for a Swept Bias Langmuir Probe 
    Kjølerbakken, Kai Morgan; Miloch, Wojciech Jacek; Martinsen, Ørjan Grøttem; Pabst, Oliver; Røed, Ketil (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    We present a numerical study disclosing non-linear effects and hysteresis loops for a swept bias Langmuir probe. A full kinetic particle in cell (PIC) model has been used to study the temporal sheath effects and the probe ...
  • Questioning the aloe vera plant and apple memristors 
    Pabst, Oliver (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Non-linear electrical properties of a (biological) tissue can be revealed by non-linear electrical measurements, which means that the applied stimulus itself affects the measurement. If resulting voltage–current plots ...
  • Rectifying memristor bridge circuit realized with human skin 
    Pabst, Oliver (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    It has been demonstrated before that human skin can be modeled as a memristor (memory resistor). Here we realize a memristor bridge by applying two voltages of opposite signs at two different skin sites. By this setup it ...
  • Simulation based comparison between a transversal and a tangential memristor model with a capacitance in parallel 
    Pabst, Oliver; Martinsen, Ørjan Grøttem (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    In non-linear measurements, the applied stimulus itself affects the electrical properties of the underlying tissue. If corresponding voltage-current plots exhibit pinched hysteresis loops with pinched point in the origin ...
  • Storing information electrically in human skin 
    Pabst, Oliver; Sørebø, Øystein; Andersen, Karoline Sjøen; Ousdal, Erlend Lemva; Bråthen, Sean William; Rehman, Badi Ur; Gholami, Haiatullah; Zhong, Zhijian; Takahashi, Koki; Dumesso, Diriba Tasfaye; Livingston, Mellie Merete; Lodewijk, Wesley Julian; Sæther, Stian; Turk, Alireza Eskandari; Uller, Petter Louis (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Abstract Human skin has been classified as a non-volatile memristor and it is shown that information can be stored within for at least three minutes. Here we investigate whether it is possible to store information ...
  • The non-linear electrical properties of human skin make it a generic memristor 
    Pabst, Oliver; Martinsen, Ørjan Grøttem; Chua, Leon (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    An electrical measurement is non-linear when the applied stimulus itself affects the electrical properties of the underlying tissue. Corresponding voltage-current plots may exhibit pinched hysteresis loops which is the ...
  • The non-linear electrical properties of silver/silver chloride electrodes in sodium chloride solution 
    Pabst, Oliver (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    An electrical measurement is non-linear when it is affected by the applied stimulus, i.e. when the measured phenomenon changes with amplitude. If pinched hysteresis loops can be observed in the voltage current representation, ...