1. Surface plasmon resonance properties of DC magnetron sputtered Ag nanoislands on ITO-glass and In2O3-PET substratesKyeong K. Lee, Helen Koo, Kim Dong-Joo, Michael Hamilton, Virginia Davis, Yoonsung Chung, J Goswami, Fei Tong, Minseo Park, 2014, short scientific article Found in: osebi
Keywords: Ag nanoislands, Surface plasmon resonance properties, DC magnetron sputtere, ITO-glass and In2O3-PET substrates
Published: 16.01.2017; Views: 3517; Downloads: 0
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2. Flexible organic/inorganic hybrid solar cells based on conjugated polymer and ZnO nanorod arrayKyeong K Lee, Minseo ParK, Eunhee Lim, Dong-Joo Kim, Sungkoo Lee, John Williams, Daniel Martinez, Resham Thapa, Ayayi Ahyi, Kyusang Kim, Fei Tong, 2012, original scientific article Found in: osebi
Keywords: organic/inorganic hybrid solar cells, conjugated polymer, ZnO nanorod array
Published: 16.01.2017; Views: 3781; Downloads: 0
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3. Growth of nanostructured ZnO on wearable fabrics for functional garmentMinseo ParK, Fei Tong, Achintya Sujan, Yoonsung Chung, Minseo Park, Bruce Tatarchuk, Helen Koo, Hosang Ahn, Young Soo Yoon, Dong-Joo Kim, 2014, original scientific article Found in: osebi
Keywords: ZnO, Fabrics, Dip-pad-cure method, Nanorods, Diffuse reflectance, IV measurement
Published: 16.01.2017; Views: 3790; Downloads: 0
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4. Growth of ZnO Nanorod Arrays on Flexible Substrates: Effect of Precursor Solution ConcentrationEunhee Lim, Sungkoo Lee, Dong-Joo Kim, Hyejin Park, Hosang Ahn, Tamara Issacs-Smith, John Williams, Ayayi Ahyi, Yogesh Sharma, Aaron Modic, Resham Thapa, Kyusang Kim, Yaqi Wang, Fei Tong, Kyeong K. Lee, Minseo Park, 2012, original scientific article Found in: osebi
Keywords: ZnO Nanorod Arrays, ITO-PET, solution growth
Published: 16.01.2017; Views: 3898; Downloads: 0
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6. Morphological diversity in nanoporous covalent organic materials derived from viologen and pyreneAli Trabolsi, Ramesh Jagannathan, John-Carl Olsen, Jesus Raya, Dong Suk Han, Carlos Platas-Iglesias, Thirumurugan Prakasam, Sudhir Kumar Sharma, Tina Škorjanc, Gobinda Das, original scientific article Found in: osebi
Keywords: covalent organic polymers, hollow tube, polymers, porous materials, iodine capture
Published: 02.09.2020; Views: 1821; Downloads: 0
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7. Immobilization of Redox-Responsive Switches Into Calixarene-Based Covalent Organic Polymers for Environmental ApplicationsAli Trabolsi, Ramesh Jagannathan, Dong Suk Han, Jesus Raya, Sudhir Kumar Sharma, Dinesh Shetty, Tina Skorjanc, 2017, unpublished conference contribution Found in: osebi
Keywords: calixarene, redox switches, dye adsorption
Published: 03.09.2020; Views: 1686; Downloads: 0
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8. Chitosan and their derivatives: Antibiofilm drugs against pathogenic bacteriaFazlurrahman Khan, Dong Pham, Sandra Oloketuyi, Panchanathan Manivasagan, Junghwan Oh, Young-Mog Kim, 2020, review article Abstract: Biofilm formed by several pathogenic bacteria results in the development of resistance against antimicrobial compounds. The polymeric materials present in the biofilm architecture hinder the entry of antimicrobial compounds through the surface of bacterial cells which are embedded as well as enclosed beneath the biofilm matrix. Recent and past studies explored the alternative approaches to inhibit the formation of biofilm by different agents isolated from plants, animals, and microbes. Among these agents, chitosan and its derivatives have got more attention due to their properties such as biodegradability, biocompatibility, non-allergenic and non-toxicity. Recent researches have focused on employing chitosan and its derivatives as effective agents to inhibit biofilm formation and attenuate virulence properties by various pathogenic bacteria. Such antibiofilm activity of chitosan and its derivatives can be further enhanced by conjugation with a wide range of bioactive compounds. The present review describes the antibiofilm properties of chitosan and its derivatives against the pathogenic bacteria. This review also summarizes the mechanisms of biofilm inhibition exhibited by these molecules. The knowledge of the antibiofilm activities of chitosan and its derivatives as well as their underlying mechanisms provides essential insights for widening their applications in the future.
Found in: osebi
Keywords: Antibiofilm, Biofilm inhibition, Chitosan, Chitosan derivatives, Pathogenic bacteria
Published: 14.01.2021; Views: 1663; Downloads: 0
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9. Plasma-enhanced atomic layer deposition of amorphous Ga2O3 for solar-blind photodetectionQiang Zhou, Guang-Wei Deng, Dong-Liang Liu, Kuang Feng, Bo-Lin Li, Matjaž Valant, Andraž Mavrič, Nadiia Pastukhova, Bo-Yu Fan, Min-Ji Yang, Ze-Yu Fan, Yan-Bo Li, 2022, original scientific article Abstract: Wide-bandgap gallium oxide (Ga2O3) is one of the most promising semiconductor materials for solar-blind (200 nm–280 nm) photodetection. In its amorphous form, a-Ga2O3 maintains its intrinsic optoelectronic properties while can be prepared at a low growth temperature, thus is compatible with Si integrated circuits (ICs) technology. Herein, the a-Ga2O3 film is directly deposited on pre-fabricated Au interdigital electrodes by plasma enhanced atomic layer deposition (PE-ALD) at a growth temperature of 250 °C. The stoichiometric a-Ga2O3 thin film with a low defect density is achieved owing to the mild PE-ALD condition. As a result, the fabricated Au/a-Ga2O3/Au photodetector shows a fast time response, high responsivity, and excellent wavelength selectivity for solar-blind photodetection. Furthermore, an ultra-thin MgO layer is deposited by PE-ALD to passivate the Au/a-Ga2O3/Au interface, resulting in the responsivity of 788 A/W (under 254 nm at 10 V), a 250-nm-to-400-nm rejection ratio of 9.2×103, and the rise time and the decay time of 32 ms and 6 ms, respectively. These results demonstrate that the a-Ga2O3 film grown by PE-ALD is a promising candidate for high-performance solar-blind photodetection and potentially can be integrated with Si ICs for commercial production.
Found in: osebi
Keywords: Amorphous gallium oxide, Passivation layer, Plasma enhanced atomic layer deposition, Responsivity, Solar-blind photodetector
Published: 25.10.2022; Views: 408; Downloads: 0
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10. Photoexcited charge mobility in quasi two-dimensional polyacetyleneNadiia Pastukhova, Kejun Liu, Renhao Dong, Gvido Bratina, Xinliang Feng, Egon Pavlica, 2022, published scientific conference contribution abstract Abstract: Two-dimensional conjugated polymers (2DCPs) have been described and recognised as crystalline, one- to two-layer polymer nanosheets prepared by 2D covalent polymerization exhibiting strong in-plane π-electron delocalization with two orthogonal directions and weak out-of-plane π-π stacking.[1,2] The extension of polymer dimensionality into two dimensions improves the alignment of individual polymer sheets and overcomes the limitations associated with charge carrier hopping between polymer chains in one-dimensional and crosslinked polymers.[3] Compared to other two-dimensional materials such as graphene or transition metal dichalcogenides, 2DCPs offer a high degree of flexibility in chemical design and are compatible with liquid-based processing methods. Various 2DCPs have been synthesised by surfactant monolayer-assisted interfacial synthesis (SMAIS).[5]
Of particular interest is the photoresponse of these materials due to their tunable properties, such as bandgap and associated wavelength-dependent photoexcitation, which enables a wide range of applications in optoelectronic devices. Using time-of-flight photoconductivity (TOF-PC) measurements [4], we investigate the charge transport properties of 2D polyacetylene prepared by SMAIS method. We preform TOF-PC measurement of 2D polyacetylene using a focused nanosecond pulse laser at 325 nm and electrode separation of 250 µm. From the bias polarity and time duration of the photocurrent, we can determine the polarity, velocity and mobility of photoexcited charge carriers as a function of applied bias voltage and excitation wavelength. Using excitation at 325 m, we observed an electron mobility in the range of 150 cm2 V-1 s-1, which is in the realm of most advances small-molecule single-crystal organic semiconductors and almost an order of magnitude higher than linear polymeric semiconductors.
Found in: osebi
Keywords: Two-dimensional conjugated polymers, 2DCPs, 2Dpolymers, charge mobility, time-of-flight photoconductivity
Published: 29.11.2022; Views: 330; Downloads: 0
Fulltext (530,29 KB) |
