Temat: 78.67.Wj - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: ESR Spectroscopy of Graphene with Adsorbed NaCl Particles
Autorzy:: Karpierz, E.
Drabińska, A.
Bożek, R.
Kaźmierczak, P.
Wysmołek, A
Kamińska, M
Strupiński, W.
Powiązania:: https://bibliotekanauki.pl/articles/1376214.pdf
Data publikacji:: 2014-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 81.05.ue
72.10.Fk
78.67.Wj
72.80.Vp
Opis:: Due to its peculiar properties graphene is a good candidate for sensor materials. Therefore, it is important to study influence of different fluids on graphene layer. The presented studies showed pinning of NaCl microcrystals to graphene surface after immersing graphene in NaCl solution and subsequent careful rinsing with distilled water. The atomic force microscopy images revealed presence of many NaCl-related structures over 100 nm high on graphene surface. The electron spin resonance spectrum for magnetic field perpendicular to the graphene layer consisted of several lines originating from NaCl. The pinning of NaCl microcrystals resulted in increase of electron scattering, as confirmed by the Raman spectroscopy (the increase of intensity of D and D' bands) and weak localization measurement (the decrease of coherence length).
Źródło:: Acta Physica Polonica A; 2014, 126, 5; 1187-1189
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: In Situ Raman Spectroscopy of Solution-Gated Graphene on Copper
Autorzy:: Binder, J.
Stępniewski, R.
Strupiński, W.
Wysmołek, A.
Powiązania:: https://bibliotekanauki.pl/articles/1033795.pdf
Data publikacji:: 2017-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 68.65.Pq
78.67.Wj
73.30.+y
Opis:: We present a solution-gated in situ Raman spectroscopy approach, which enables the electrical characterization of graphene on a copper substrate without the need of a transfer process. The application of a voltage across the solution resulted in a shift of the Raman G-band without a significant shift of the 2D band. This observation allowed for the separation of the effects of strain and doping. Based on the G and 2D band shifts we show that we can manipulate the n-type carrier concentration of graphene directly on the copper substrate in a range from about 8× 10¹² cm¯² to about 1.5× 10¹³ cm¯².
Źródło:: Acta Physica Polonica A; 2017, 132, 2; 360-363
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Optical and Electrical Studies of Graphene Deposited on GaN Nanowires
Autorzy:: Kierdaszuk, J.
Kaźmierczak, P.
Drabińska, A.
Wysmołek, A.
Korona, K.
Kamińska, M.
Pakuła, K.
Pasternak, I.
Krajewska, A.
Żytkiewicz, Z.
Powiązania:: https://bibliotekanauki.pl/articles/1195433.pdf
Data publikacji:: 2014-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 81.05.ue
72.10.Fk
78.67.Wj
72.80.Vp
Opis:: In this paper using scanning electron microscope, contactless microwave electronic transport and the Raman spectroscopy we studied the properties of graphene deposited on GaN nanowires and compared it with the graphene deposited on GaN epilayer. The Raman micro-mapping showed that nanowires locally change the strain and the concentration of carriers in graphene. Additionally we observed that nanowires increase the intensity of the Raman spectra by more than one order of magnitude.
Źródło:: Acta Physica Polonica A; 2014, 126, 5; 1087-1089
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Optical Characterization of Graphene and Highly Oriented Pyrolytic Graphite
Autorzy:: Kostić, R.
Mirić, M.
Radić, T.
Radović, M.
Gajić, R.
Popović, Z.
Powiązania:: https://bibliotekanauki.pl/articles/1795772.pdf
Data publikacji:: 2009-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 63.20.D-
78.67.Wj
81.05.U-
Opis:: We present a symmetry analysis of allowed infrared and Raman modes in graphene and highly oriented pyrolytic graphite. Surface structure for highly oriented pyrolytic graphite is examined using atomic force microscopy. As experimental tools, we used infrared spectroscopic ellipsometry in order to investigate the pseudodielectric function of highly oriented pyrolytic graphite in the mid-infrared range (500-7000 $cm^{-1}$) and Raman spectroscopy to investigate the influence of layers number decrease. As a result, we propose a method for an experimental verification of graphene.
Źródło:: Acta Physica Polonica A; 2009, 116, 4; 718-721
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Photoelectromagnetic Investigations of Graphene
Autorzy:: Nowak, M.
Solecka, B.
Jesionek, M.
Powiązania:: https://bibliotekanauki.pl/articles/1376055.pdf
Data publikacji:: 2014-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 72.80.Vp
73.50.Gr
73.50.Pz
78.67.Wj
Opis:: The photoelectromagnetic investigations of graphene has been performed using noncontact technique. The dependence of photoelectromagnetic response on magnetic field induction, illumination intensity for different photon energies, and frequency of illumination chopping is presented. We anticipate our paper to be a starting point for investigations of carrier diffusion length in this material. Such investigations should be essential for development of graphene electronic and optoelectronic devices.
Źródło:: Acta Physica Polonica A; 2014, 126, 5; 1104-1106
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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