Struktūra

Atgal

Optoelektronikos skyrius

Skyriaus vadovas prof. Gintaras Valušis
tel. +370 5 2649211

Skyrius atlieka fundamentinius ir taikomuosius tyrimus puslaidininkinių medžiagų technologijos ir fizikos srityse, optoelektronikos prietaisų technologijoje ir jų taikymuose. Skyriaus turima moderni puslaidininkių epitaksijos technologinė įranga leidžia užauginti darinius iš naujų medžiagų, tokių, kaip III grupės elementų bismidai, ir pagaminti infraraudonojo ir terahercinių dažnių diapazono optoelektroninius prietaisus. Skyriaus mokslininkai taip pat gali atlikti visą kompleksą standartinių medžiagų optinių savybių matavimų; jie yra sukūrę visą eilę unikalių terahercinės spektroskopijos ir vaizdinimo technologijų.

Laboratorijos:

SKYRIAUS DARBUOTOJAI


įranga

Ultrasparčiosios optoelektronikos laboratorija

  
  • Perderinamo bangos ilgio femtosekundinių impulsų optinis parametrinis generatorius (ORPHEUS, Light Conversion);
  • Ti:safyre femtosekundinis lazeris (MIRA, Coherent);
  • Ti:safyre femtosekundinis lazeris (Femtolaser):
  • Yb:KGW femtosekundinis osciliatorius (Light Conversion);
  • Er:skaiduloje femtosekundinis lazeris (Toptica);
  • THz laikinės spektroskopijos sistema;
  • Optinio kaupinimo THz strobavimo sistema.
  
Optoelektronikos technologijų laboratorija  
  • Veeco GENxplor molekulių pluoštelių epitaksijos (MPE) sistema yra skirta aukštos kokybės  III-V junginių epitaksiniam auginimui ant padėklų iki 3 colių diametro esant labai aukštam auginimo parametrų valdymo tikslumui. Sistema aprūpinta In, Ga, Al, Bi molekuliniais šaltiniais, As2 ir Sb skaldikliais bei Si, Be bei Te legirantais.
  • SVT „III-V MBE System Model C-V-2“ - MPE įrenginys skirtas III-V grupės puslaidininkinių sluoksnių ir kvantinių darinių auginimui. Įrenginys aprūpintas In, Ga, Al, Bi molekuliniais šaltiniais, As2 skaldikliu bei Si ir Be legirantais.
  • Integrated Vacuum Deposition System Model TFDS- 870 - elektroninio spindulio įrenginys skirtas metalų kontaktų ant puslaidininkių struktūrų formavimui. Galima garinti Au, Ge, Ti, Ni, Al, AuGe vieno sluoksnio ar daugiasluoksnes dangas.
  
Puslaidininkių optikos laboratorija  
  • Moduliacinės spektroskopijos stendas (fotoatspindys, elektroatspindys, SPV, l‑moduliacija; hw = 0.5 – 4 eV sritis).
  • Žematemperatūrinės optinės spektroskopijos stendas (foto- ir elektroatspindys, l‑moduliacija, fotoliuminescencija, PLE; hw = 0.56 – 5 eV sritis, 4 – 300 K temperatūrinis intervalas).
  • Daugiakampės spektroskopinės elipsometijos stendas (RC2 Woolam ir sukamo analizatoriaus elipsometrai; hw = 0.4 – 6.2 eV sritis).
  • Poliarizacijos moduliacijos ir magnetooptinių tyrimų stendas (PEM-moduliacija, magnetinis laukas iki 3 T).
  • Fourier IR spektroskopijos stendas (Vertex 70v FT-spektrometras, hw = 0.01 – 0.7 eV, su Ramano ir cirkulinio dichroizmo blokais).
  • Šviesos sklaidos stendas (hw = 1.5 – 4 eV sritis).
  • Shimadzu UV-3600 spektrometras su integruojančia sfera.
  
Terahercinės fotonikos laboratorija  
  • Edinburgh Instruments THz lazeris FIRL-100;
  • VDI dažnių daugintuvas dažnių ruožui 100/200/300/600 GHz;
  • Thermo Scientific Furjė IR spektrometras Nicolet 8700;
  • Vakumuojamas Furjė IR spektrometras;
  • Toptica Terascan 780 sistema;
  • Spektroskopinė THz vaizdinimo sistema;
  • Janis Research uždaro ciklo LHe kriostatas su optiniais lanagais ir elektrinėmis jungtimis;
  • Užpilamas skystu azotu LN2 kriostatas su optiniais lanagais ir elektrinėmis jungtimis;
  • Precizinė zondinė stotis bei laboratoriniai matavimo prietaisai, skirti I/V bei C/V charakteristikų matavimams dc-, ac-, arba impulsiniame rėžimuose.
  
Vykdomi projektai
  • Europos kosmoso agentūros projektas „Bismidai infraraudoniems fotodetektoriams“ (BIRD)Projekto tikslas yra naujųjų A3B5 puslaidininkinių junginių, vadinamų praskiestaisiais bismidų lydiniais, sluoksnių auginimo technologijos sukūrimas. Bi įvedimas į GaAs, GaInAs ir InAs elementarųjį narvelį vietoj arseno atomų stipriai susiaurina junginio draustinių energijų tarpą ir daro juos patrauklius artimųjų ir viduriniųjų bangų taikymams. Vykdant projektą bus įvertintos išvystytų technologijų taikymo perspektyvos dviejose kryptyse: i) epitaksinių bismidų sluoksnių, pasižyminčių ~1 eV draustinių energijų tarpu, taikymas didelio efektyvumo tandeminių fotovoltinių elementų kūrimui ir ii) fotodiodų ir fotodiodinių matricų, jautrių infraraudonosios spektro srities bangoms iki 4 mm, gamybai.
    Projekto vykdymo laikotarpis 2016 01 18-2018 01 18
    Projekto koordinatorius Valstybinis mokslinių tyimų institutas Fizinių ir technologijos mokslų centras; vadovas A. Krotkus
    Projekto biudžetas 199 135 eurų

  • FP7 Marie Curie ITN projektas NOTEDEV (Nauji teraherciniai prietaisai)
    NOTEDEV yra Europos Sąjungos Marie Curie programos projektas.  Šio projekto tikslas - įvaldyti vadinamąją Terahercų (THz) elektromagnetinio spektro dalį.  Jungtinis su vienais geriausių Europos universitetų ir industrinių partnerių bendradarbiavimo siekis yra moksliniai tyrimai šioje srityje ir jaunųjų fizikų paruošimas. Teraherciniai šaltiniai bei detektoriai turi daug reikšmingų pritaikymų biologijos, medicinos, saugos ir nedestruktyvaus testavimo srityse.  Kai kurie teraherciniai prietaisai jau dabar yra praktiškai naudojami, tačiau norint visiškai išnaudoti terahercinės elektromagnetinio spektro dalies potencialą, reikia tęsti prietaisų tobulinimą orientuojantis į jų efektyvumą, kompaktiškumą, patikimumą bei kainą. Fizinių ir technologijos mokslų centre (FTMC) vystomi yra puslaidininkiniai THz komponentai laikinės Spektroskopijos (Time-Domain Spectroscopy, TDS) sistemoms aktyvuojamoms 1,55 μm femtosekundinių lazerių impulsais.  Šie femtosekundiniai lazeriai užtikrintų THz-TDS sistemos konkurencingą kainą ir kompaktiškumą.
    Projekto trukmė 2014 10 01 – 2017 09 30
    Projekto koordinatorius Durham’o universitetas, JK; FTMC grupės vadovas Arūnas Krotkus
    FTMC skirta biudžeto dalis 185 000 Eurų

  • Nepoliniai ZnO ploni sluoksniai: su auginimu susijusios struktūrinės ir optinės savybės (programa „Mutual Funds Taiwan – Latvia – Lithuania“, 2014-2016, vadovas – R. Nedzinskas, 3500-P246, 3500-U11)

  • Projektas LAT-04/2016 (3500-P330) „Kompaktiški integriniai THz komponentai ir spektroskopinio THz vaizdinimo sistemos – KITKAS“, LAT-04/2016 (Lietuvos mokslo taryba, 2016-2018). Vadovas – Irmantas Kašalynas

  • Projektas MIP-71/2015 „Bismuto kvantiniai taškai GaAs matricoje – BiNano“, (Lietuvos mokslo taryba, 2015-2017).  Vadovė – Renata Butkutė (Dalius Seliuta)

  • Projektas MIP-14281 „Aktyvių metamedžiagų tyrimas ir taikymas terahercinės spinduliuotės perjungimui ir moduliacijai“ (Lietuvos mokslo taryba, 2014-2017) Vadovas – Žilvinas Kancleris (Dalius Seliuta)

svarbiausios publikacijos
  1. Rutkauskas, Danielis; Auksorius, Egidijus. Time-domain full-field optical coherence tomography with digital confocal line scanning //Optics letters. ISSN 0146-9592. 2023, vol. 48, iss. 13, p. 3539-3542.
  2. Čižas, Vladislovas; Alexeeva, Natalia; Alexeev, Kirill; Valušis, Gintaras. Coexistence of bloch and parametric mechanisms of high-frequency gain in doped superlattices//Nanomaterials. eISSN 2079-4991. 2023, vol.13, iss.13, art. no. 1993, p. 1-17.
  3. Lukša, Algimantas; Bukauskas, Virginijus; Nargelienė, Viktorija; Treideris, Marius; Talaikis, Martynas; Selskis, Algirdas; Suchodolskis, Artūras; Šetkus, Arūnas. Influence of growth time and temperature on optical characteristics and surface wetting in nano-crystalline graphene deposited by PECVD directly on silicon dioxide//Crystals. eISSN 2073-4352. 2023, vol. 13, iss. 8, art. no. 1243, p. 1-13.
  4. Nedzinskas, Ramūnas; Suchodolskis, Artūras; Trinkler, Laima; Krieke, Guna; Yao, Wan-Tung; Chang, Chia-Cheng; Chang, Liuwen; Chou, Mitch Ming-Chi. Optical characterization of high-quality ZnO (0002) / Cu (111) epilayers grown by electrodeposition//Optical materials. ISSN 0925-3467. 2023, vol. 138, art. no. 113650, p. 1-9.
  5. Trinkler, Laima; Dai, Dajin; Chang, Liuwen; Chou, Mitch Ming-Chi; Wu, Tzu-Ying; Gabrusenoks, Jevgenijs; Nilova, Dace; Ruska, Rihards; Berzina, Baiba; Nedzinskas, Ramunas. Luminescence properties of epitaxial Cu2O thin films electrodeposited on metallic substrates and Cu2O single crystals//Materials. eISSN 1996-1944. 2023, vol. 16, iss. 12, art. no. 4349, p. 1-21.
  6. Urbonis, D.; Ragulis, Paulius; Šlekas, Gediminas; Kamarauskas, Andrius; Seliuta, Dalius; Kancleris, Žilvinas Andrius. Symmetric and asymmetric Fano resonances in a broken axial symmetry metasurface of split ring resonators//Journal of applied physics. ISSN 0021-8979. 2023, vol. 134, iss. 13, art. no. 133102, p. 1-7.
  7. Krotkus, Arūnas; Nevinskas, Ignas; Norkus, Ričardas. Semiconductor characterization by terahertz excitation spectroscopy//Materials. eISSN 1996-1944. 2023, vol. 16, iss. 7, art. no. 2859, p. 1-25.
  8. Janonis, Vytautas; Kacperski, Jacek; Selskis, Algirdas; Balagula, Roman; Prystawko, Pawel; Kašalynas, Irmantas. Directive and coherent thermal emission of hybrid surface plasmon-phonon polaritons in n-GaN gratings of linear and radial shapes//Optical materials express. eISSN 2159-3930. 2023, vol. 13, iss. 9, p. 2662-2673.
  9. Ivaškevičiūtė-Povilauskienė, Rusnė; Čižas, Vladislovas; Nacius, Ernestas; Grigelionis, Ignas; Redeckas, Karolis; Bernatonis, Matas; Orlovas, Sergejus; Valušis, Gintaras; Minkevičius, Linas. Flexible terahertz optics: light beam profile engineering via C-shaped metallic metasurface // Frontiers in physics. ISSN 2296-424X. 2023, vol. 11, art. no. 1196726, p. 1-9.
  10. Lujanienė, Galina; Novikau, Raman; Leščinskytė, Agnė; Mažeika, Kęstutis; Pakštas, Vidas; Tumėnas, Saulius; Skapas, Martynas; Šilobritienė, Beata. Prussian blue composites for Cs adsorption – modification of the method and modelling of the adsorption processes // Journal of radioanalytical and nuclear chemistry. ISSN 0236-5731. 2023, vol. 332, p. 1033-1045.
  11. Grigelionis, Ignas; Čižas, Vladislovas; Karaliūnas, Mindaugas; Jakštas, Vytautas; Ikamas, Kęstutis; Urbanovič, Andže; Treideris, Marius; Bičiūnas, Andrius; Jokubauskis, Domas; Butkutė, Renata; Minkevičius, Linas. Narrowband thermal terahertz emission from homoepitaxial GaAs structures coupled with Ti/Au metasurface // Sensors. eISSN 1424-8220. 2023, vol. 23, iss. 10, art. no. 4600, p. 1-11.
  12. Balagula, Roman; Subačius, Liudvikas; Prystawko, Paweł; Kašalynas, Irmantas. Electro-optical modulation of terahertz beam by drifting space-charge domains in n-GaN epilayers // Journal of applied physics. ISSN 0021-8979. 2023, vol. 133, iss. 20, art. no. 205702, p. 1-8.
  13. Ayyagari, Surya Revanth; Indrišiūnas, Simonas; Kašalynas, Irmantas. Hybrid multiphase fresnel lenses on silicon wafers for terahertz frequencies // IEEE transactions on terahertz science and technology. ISSN 2156-342X. 2023, vol. 13, iss. 3, p. 231-236.
  14. Krotkus, Arūnas; Nevinskas, Ignas; Norkus, Ričardas; Geižutis, Andrejus; Strazdienė, Viktorija; Pačebutas, Vaidas; Paulauskas, Tadas. Terahertz photocurrent spectrum analysis of AlGaAs/GaAs/GaAsBi multi-junction solar cells // Journal of physics D: Applied physics. ISSN 0022-3727.  2023, vol. 56, iss. 35, art.no. 355109, p. 1-8.
  15. Markauskas, Edgaras; Zubauskas, Laimis; Naujokaitis, Arnas; Čechavičius, Bronislovas; Talaikis, Martynas; Niaura, Gediminas; Čaplovičová, Mária; Vretenár, Viliam; Paulauskas, Tadas. GaAs ablation with ultrashort laser pulses in ambient air and water environments // Journal of applied physics. ISSN 0021-8979.  2023, vol. 133, iss. 23, art.no. 235102, p. 1-9.
  16. Molinara, Mario; Cancelliere, Rocco; Di Tinno, Alessio; Ferrigno, Luigi; Shuba, Mikhail; Kuzhir, Polina; Maffucci, Antonio; Micheli, Laura. A deep learning approach to organic pollutants classification using voltammetry // Sensors. ISSN 1424-8220. 2022, vol. 22, iss. 20, art. no. 8032, p. 1-16.
  17. Trinkler, Laima; Aulika, Ilze; Krieke, Guna; Nilova, Dace; Ruska, Rihards; Butikova, Jelena; Berzina, Baiba; Chou, Mitch Ming-Chi; Chang, Liuwen; Wen, Meng-Chieh; Yan, Tao; Nedzinskas, Ramūnas. Characterization of wurtzite Zn1−xMgxO epilayers grown on ScAlMgO4 substrate by methods of optical spectroscopy // Journal of alloys and compounds. ISSN 0925-8388.  2022, vol. 912, art. no. 165178, p. 1-10.
  18. Lukša, Algimantas; Astachov, Vladimir; Balakauskas, Saulius; Bukauskas, Virginijus; Kamarauskas, Mindaugas; Suchodolskis, Artūras; Treideris, Marius; Talaikis, Martynas; Šetkus, Arūnas. Changes in electrical conductance in the limited area of microcrystalline graphene due to the spatial proximity of water droplet // Surfaces and interfaces. ISSN 2468-0230. 2023, vol. 36, art. no. 102508, p. 1-9.
  19. Krautmann, R.; Spalatu, N.; Josepson, R.; Nedzinskas, Ramūnas; Kondrotas, Rokas; Gržibovskis, R.; Vembris, A.; Krunks, M.; Oja Acik, I. Low processing temperatures explored in Sb2S3 solar cells by close-spaced sublimation and analysis of bulk and interface related defects // Solar energy materials and solar cells. ISSN 0927-0248. 2023, vol. 251, art. no. 112139, p. 1-9.
  20. Armalytė, Simona; Glemža, Justinas; Jonkus, Vytautas; Pralgauskaitė, Sandra; Matukas, Jonas; Pūkienė, Simona; Zelioli, Andrea; Dudutienė, Evelina; Naujokaitis, Arnas; Bičiūnas, Andrius; Čechavičius, Bronislovas; Butkutė, Renata. Low-frequency noise characteristics of (Al, Ga)As and Ga(As, Bi) quantum well structures for NIR laser diodes // Sensors. eISSN 1424-8220. 2023, vol. 23, iss. 4, art. no. 2282, p. 1-13.
  21. Leitenstorfer, Alfred; Moskalenko, Andrey S; Kampfrath, Tobias; Kono, Junichiro; Castro-Camus, Enrique; Peng, Kun; Qureshi, Naser; Turchinovich, Dmitry; Tanaka, Koichiro; Markelz, Andrea G; Havenith, Martina; Hough, Cameron; Joyce, Hannah J; Padilla, Willie J; Zhou, Binbin; Kim, Ki-Yong; Zhang, Xi-Cheng; Jepsen, Peter Uhd; Dhillon, Sukhdeep; Vitiello, Miriam; Linfield, Edmund; Davies, A Giles; Hoffmann, Matthias C; Lewis, Roger; Tonouchi, Masayoshi; Klarskov, Pernille; Seifert, Tom S; Gerasimenko, Yaroslav A; Mihailovic, Dragan; Huber, Rupert; Boland, Jessica L; Mitrofanov, Oleg; Dean, Paul; Ellison, Brian N; Huggard, Peter G; Rea, Simon P; Walker, Christopher; Leisawitz, David T; Gao, Jian Rong; Li, Chong; Chen, Qin; Valušis, Gintaras; Wallace, Vincent P; Pickwell-MacPherson, Emma; Shang, Xiaobang; Hesler, Jeffrey; Ridler, Nick; Renaud, Cyril C; Kallfass, Ingmar; Nagatsuma, Tadao; Zeitler, J Axel; Arnone, Don; Johnston, Michael B; Cunningham, John. The 2023 terahertz science and technology roadmap // Journal of physics D: Applied physics. ISSN 0022-3727. 2023, vol. 56, iss. 22, art. no. 223001, p. 1-66.
  22. Uslu, Mehmet Ender; Kondrotas, Rokas; Nedzinskas, Ramūnas; Volobujeva, Olga; Timmo, Kristi; Kauk-Kuusik, Marit; Krustok, Jüri; Grossberg, Maarja. Study of the optical properties of Sb2(Se1-xSx)3 (x = 0–1) solid solutions // Materials science in semiconductor processing. BV. ISSN 1369-8001. 2022, vol. 144, art. no. 106571, p. 1-6.
  23. Šermukšnis, Emilis; Jorudas, Justinas; Šimukovič, Artūr; Kovalevskij, Vitalij; Kašalynas, Irmantas. Self-heating of annealed Ti/Al/Ni/Au contacts to two-dimensional electron gas in AlGaN/GaN heterostructures // Applied sciences. eISSN 2076-3417. 2022, vol. 12, iss. 21, art. no. 11079, p. 1-17.
  24. Krustok, Jüri; Kondrotas, Rokas; Nedzinskas, Ramūnas; Timmo, Kristi; Kaupmees, Reelika; Mikli, Valdek; Grossberg, Maarja. Identification of excitons and biexcitons in Sb2Se3 under high photoluminescence excitation density // Advanced optical materials. ISSN 2195-1071. 2021, vol. 9, iss. 10, art. no. 2100107, p. 1-7.
  25. Tamošiūnas, Vincas; Minkevičius, Linas; Bučius, Ignotas; Jokubauskis, Domas; Redeckas, Karolis; Valušis, Gintaras. Design and performance of extraordinary low-cost compact terahertz imaging system based on electronic components and paraffin wax optics // Sensors. eISSN 1424-8220. 2022, vol. 22, iss. 21, art. no. 8485, p. 1-11.
  26. Ivaškevičiūtė-Povilauskienė, Rusnė; Kizevičius, Paulius; Nacius, Ernestas; Jokubauskis, Domas; Ikamas, Kęstutis; Lisauskas, Alvydas; Alexeeva, Natalia; Matulaitienė, Ieva; Jukna, Vytautas; Orlovas, Sergejus; Minkevičius, Linas; Valušis, Gintaras. Terahertz structured light: nonparaxial Airy imaging using silicon diffractive optics // Light: science & applications. eISSN 2047-7538. 2022, vol. 11, art. no. 326, p. 1-13.
  27. Jorudas, Justinas; Pashnev, Daniil; Kašalynas, Irmantas; Ignatjev, Ilja; Niaura, Gediminas; Selskis, Algirdas; Astachov, Vladimir; Alexeeva, Natalia. Green removal of DUV-polarity-modified PMMA for wet transfer of CVD graphene // Nanomaterials. eISSN 2079-4991. 2022, vol. 12, iss. 22, art. no. 4017, p. 1-17.
  28. Auksorius, Egidijus; Borycki, Dawid; Wegrzyn, Piotr; Sikorski, Bartosz L.; Lizewski, Kamil; Žičkienė, Ieva; Rapolu, Mounika; Adomavičius, Karolis; Tomczewski, Slawomir; Wojtkowski, Maciej. Spatio-temporal optical coherence tomography provides full thickness imaging of the chorioretinal complex // iScience. ISSN 2589-0042. 2022, vol. 25, iss. 12, art. no. 105513, p. 1-21.
  29. Lujanienė, Galina; Novikau, Raman; Joel, Edith Flora; Karalevičiūtė, Karolina; Šemčuk, Sergej; Mažeika, Kęstutis; Talaikis, Martynas; Pakštas, Vidas; Tumėnas, Saulius; Mažeika, Jonas; Jokšas, Kęstutis. Preparation of graphene oxide-maghemite-chitosan composites for the adsorption of europium Ions from aqueous solutions // Molecules. ISSN 1420-3049. 2022, vol. 27, iss. 22, art. no. 8035, p. 1-20.
  30. Kondrotas, Rokas; Nedzinskas, Ramūnas; Krustok, Juri; Grossberg, Maarja; Talaikis, Martynas; Tumėnas, Saulius; Suchodolskis, Artūras; Žaltauskas, Raimundas; Sereika, Raimundas. Photoreflectance and photoluminescence study of antimony selenide crystals // ACS applied energy materials. ISSN 2574-0962. 2022, vol. 5, iss. 12, p. 14769-14778.
  31. Čižas, Vladislovas; Subačius, Liudvikas; Alexeeva, Natalia; Seliuta, Dalius; Hyart, Timo; Köhler, Klaus; Alexeev, Kirill; Valušis, Gintaras. Dissipative parametric gain in a GaAs / AlGaAs superlattice // Physical review letters. ISSN 0031-9007. 2022, vol. 128, iss. 23, art. no. 236802, p. 1-7.
  32. Pashnev, Daniil; Korotieiev, Vadym; Jorudas, Justinas; Urbanovič, Andžej; Prystawko, Pawel; Janonis, Vytautas; Kašalynas, Irmantas. Investigation of electron effective mass in AlGaN/GaN heterostructures by THz spectroscopy of drude conductivity // IEEE transactions on electron devices. ISSN 0018-9383. 2022, vol. 69, no. 7, p. 3636-3640.
  33. Ščajev, Patrik; Mekys, Algirdas; Subačius, Liudvikas; Stanionytė, Sandra; Kuciauskas, Darius; Lynn, Kelvin G.; Swain, Santosh K. Impact of dopant-induced band tails on optical spectra, charge carrier transport, and dynamics in single-crystal CdTe // Scientific reports. eISSN 2045-2322. 2022, vol. 12, iss. 1, art. no. 12851, p. 1-10.
  34. Stanionytė, Sandra; Malinauskas, Tadas; Niaura, Gediminas; Skapas, Martynas; Devenson, Jan; Krotkus, Arūnas. The crystalline structure of thin bismuth layers grown on silicon (111) substrates // Materials. eISSN 1996-1944. 2022, vol. 15, iss. 14, art. no. 4847, p. 1-12.
  35. Nevinskas, Ignas; Stanionytė, Sandra; Devenson, Jan; Krotkus, Arūnas. Direct bandgap dependence of bismuth films on their thickness // Journal of applied physics. ISSN 0021-8979. 2022, vol. 132, iss. 5, art. no. 055301, p. 1-6.
  36. Rehman, Hamza; Golubewa, Lena; Basharin, Alexey; Urbanovič, Andžej; Lähderanta, Erkki; Soboleva, Ekaterina; Matulaitienė, Ieva; Jankunec, Marija; Svirko, Yuri; Kuzhir, Polina. Fragmented graphene synthesized on dielectric substrate for THz applications // Nanotechnology. ISSN 0957-4484. 2022, vol. 33, iss. 39, art. no. 395703, p. 1-25.
  37. Apostolakis, A.; Balanov, A. G.; Kusmartsev, F. V.; Alexeev, Kirill. Beyond the ordinary acoustoelectric effect: Superluminal phenomena in the acoustic realm and phonon-mediated Bloch gain // Physical review B. ISSN 2469-9950. 2022, vol. 106, iss. 1, art. no. 014312, p. 1-22.
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