Browsing Zinātniskie raksti (CFI) / Scientific articles by Author "Järvekülg, Martin"

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    • Hybrid Tribo-Piezo-Electric Nanogenerator with Unprecedented Performance Based on Ferroelectric Composite Contacting Layers 

      Lapčinskis, Linards; Mālnieks, Kaspars; Linarts, Artis; Blūms, Juris; Šmits, Krišjānis; Järvekülg, Martin; Knite, Māris; Šutka, Andris (American Chemical Society, 2019)
      It was recently reported that more efficient triboelectric nanogenerator (TENG)-like devices can be prepared using inversely polarized ferroelectric films made of same material as the contacting layers. In the present work, ...

    • Mechanical reinforcement of electrospun poly(vinyl alcohol) by α‐FeOOH nanowires 

      Šutka, Anna; Järvekülg, Martin; Šutka, Andris; Heinmaa, Ivo; Mäeorg, Uno; Šmits, Krišjānis; Timusk, Martin (Society of Plastics Engineers (SPE), 2018)
      We report the mechanical performance of α‐FeOOH nanowire reinforced poly(vinyl alcohol) (PVA) composite nanofiber mat, fabricated using straightforward aqueous processing methods. Goethite (α‐FeOOH) nanocrystals have a ...

    • Reversible Photodoping of TiO2 Nanoparticles for Photochromic Applications 

      Joost, Urmas; Šutka, Andris; Oja, Marek; Smits, Krisjanis; Döbelin, Nicola; Loot, Ardi; Järvekülg, Martin; Hirsimäki, Mika; Valden, Mika; Nõmmiste, Ergo (American Chemical Society, 2018)
      Observations on the strong photochromic effect of crystalline TiO2 quantum dots (mean size ≈ 4 nm) are presented. The synthesized quantum dots consist of irregularly shaped anatase TiO2 nanoparticles (NPs) and are dispersed ...