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Zapata-Peñasco I, Avelino-Jiménez I, Mendoza-Pérez J, Vázquez Guevara M, Gutiérrez-Ladrón de Guevara M, Valadez- Martínez M, Hernández-Maya L, Garibay-Febles V, Fregoso-Aguilar T, Fonseca-Campos J. Environmental stressor assessment of hydrocarbonoclastic bacteria biofilms from a marine oil spill. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2024; 42:e00834. [PMID: 38948351 PMCID: PMC11211098 DOI: 10.1016/j.btre.2024.e00834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 03/04/2024] [Accepted: 03/07/2024] [Indexed: 07/02/2024]
Abstract
The environmental and economic impact of an oil spill can be significant. Biotechnologies applied during a marine oil spill involve bioaugmentation with immobilised or encapsulated indigenous hydrocarbonoclastic species selected under laboratory conditions to improve degradation rates. The environmental factors that act as stressors and impact the effectiveness of hydrocarbon removal are one of the challenges associated with these applications. Understanding how native microbes react to environmental stresses is necessary for effective bioaugmentation. Herein, Micrococcus luteus and M. yunnanensis isolated from a marine oil spill mooring system showed hydrocarbonoclastic activity on Maya crude oil in a short time by means of total petroleum hydrocarbons (TPH) at 144 h: M. luteus up to 98.79 % and M. yunnanensis 97.77 % removal. The assessment of Micrococcus biofilms at different temperature (30 °C and 50 °C), pH (5, 6, 7, 8, 9), salinity (30, 50, 60, 70, 80 g/L), and crude oil concentration (1, 5, 15, 25, 35 %) showed different response to the stressors depending on the strain. According to response surface analysis, the main effect was temperature > salinity > hydrocarbon concentration. The hydrocarbonoclastic biofilm architecture was characterised using scanning electron microscopy (SEM) and atomic force microscopy (AFM). Subtle but significant differences were observed: pili in M. luteus by SEM and the topographical differences measured by AFM Power Spectral Density (PSD) analysis, roughness was higher in M. luteus than in M. yunnanensis. In all three domains of life, the Universal Stress Protein (Usp) is crucial for stress adaptation. Herein, the uspA gene expression was analysed in Micrococcus biofilm under environmental stressors. The uspA expression increased up to 2.5-fold in M. luteus biofilms at 30 °C, and 1.3-fold at 50 °C. The highest uspA expression was recorded in M. yunnanensis biofilms at 50 °C with 2.5 and 3-fold with salinities of 50, 60, and 80 g/L at hydrocarbon concentrations of 15, 25, and 35 %. M. yunnanensis biofilms showed greater resilience than M. luteus biofilms when exposed to harsh environmental stressors. M. yunnanensis biofilms were thicker than M. luteus biofilms. Both biofilm responses to environmental stressors through uspA gene expression were consistent with the behaviours observed in the response surface analyses. The uspA gene is a suitable biomarker for assessing environmental stressors of potential microorganisms for bioremediation of marine oil spills and for biosensing the ecophysiological status of native microbiota in a marine petroleum environment.
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Affiliation(s)
- I. Zapata-Peñasco
- Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas Norte 152, Gustavo A. Madero, Ciudad de México, 07730, Mexico
| | - I.A. Avelino-Jiménez
- Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas Norte 152, Gustavo A. Madero, Ciudad de México, 07730, Mexico
| | - J. Mendoza-Pérez
- Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu 399, Nueva Industrial Vallejo, Gustavo A. Madero, 07738, Mexico
| | - M. Vázquez Guevara
- Facultad de Química, Universidad de Guanajuato, Noria Alta, Guanajuato, 36050, Mexico
| | - M. Gutiérrez-Ladrón de Guevara
- Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu 399, Nueva Industrial Vallejo, Gustavo A. Madero, 07738, Mexico
| | - M. Valadez- Martínez
- Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas Norte 152, Gustavo A. Madero, Ciudad de México, 07730, Mexico
| | - L. Hernández-Maya
- Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas Norte 152, Gustavo A. Madero, Ciudad de México, 07730, Mexico
| | - V. Garibay-Febles
- Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas Norte 152, Gustavo A. Madero, Ciudad de México, 07730, Mexico
| | - T. Fregoso-Aguilar
- Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu 399, Nueva Industrial Vallejo, Gustavo A. Madero, 07738, Mexico
| | - J. Fonseca-Campos
- Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas, Instituto Politécnico Nacional, Av Instituto Politécnico Nacional, Gustavo A. Madero, 07340, Mexico
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Temiryazev AG, Krayev AV, Temiryazeva MP. Two dynamic modes to streamline challenging atomic force microscopy measurements. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2021; 12:1226-1236. [PMID: 34868799 PMCID: PMC8609242 DOI: 10.3762/bjnano.12.90] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 11/01/2021] [Indexed: 06/13/2023]
Abstract
The quality of topographic images obtained using atomic force microscopy strongly depends on the accuracy of the choice of scanning parameters. When using the most common scanning method - semicontact amplitude modulation (tapping) mode, the choice of scanning parameters is quite complicated, since it requires taking into account many factors and finding the optimal balance between them. A researcher's task can be significantly simplified by introducing new scanning techniques. Two such techniques are described: vertical and dissipation modes. Significantly simplified and formalized choice of the imaging parameters in these modes allows addressing a wide range of formerly challenging tasks - from scanning rough samples with high aspect ratio features to molecular resolution imaging.
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Affiliation(s)
- Alexei G Temiryazev
- Kotel’nikov Institute of Radioengineering and Electronics of RAS, Fryazino Branch, Vvedensky Square 1, Fryazino 141190, Russia
| | - Andrey V Krayev
- Horiba Instruments Inc., 359 Bel Marin Keys Boulevard, Suite 18, Novato, California 94949, United States
| | - Marina P Temiryazeva
- Kotel’nikov Institute of Radioengineering and Electronics of RAS, Fryazino Branch, Vvedensky Square 1, Fryazino 141190, Russia
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Haque SKM, Ardila-Rey JA, Umar Y, Rahman H, Mas'ud AA, Muhammad-Sukki F, Albarracín R. Polymeric Materials for Conversion of Electromagnetic Waves from the Sun to Electric Power. Polymers (Basel) 2018; 10:polym10030307. [PMID: 30966342 PMCID: PMC6415068 DOI: 10.3390/polym10030307] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Revised: 03/02/2018] [Accepted: 03/06/2018] [Indexed: 11/21/2022] Open
Abstract
Solar photoelectric energy converted into electricity requires large surface areas with incident light and flexible materials to capture these light emissions. Currently, sunlight rays are converted to electrical energy using silicon polymeric material with efficiency up to 22%. The majority of the energy is lost during conversion due to an energy gap between sunlight photons and polymer energy transformation. This energy conversion also depends on the morphology of present polymeric materials. Therefore, it is very important to construct mechanisms of highest energy occupied molecular orbitals (HOMO)s and the lowest energy unoccupied molecular orbitals (LUMO)s to increase the efficiency of conversion. The organic and inorganic solar cells used as dyes can absorb more photons from sunlight and the energy gap will be less for better conversion of energy to electricity than the conventional solar cells. This paper provides an up-to-date review on the performance, characterization, and reliability of different composite polymeric materials for energy conversion. Specific attention has been given to organic solar cells because of their several advantages over others, such as their low-energy payback time, conversion efficiency and greenhouse emissions. Finally, this paper provides the recent progress on the application of both organic and inorganic solar cells for electric power generations together with several challenges that are currently faced.
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Affiliation(s)
- S K Manirul Haque
- Department of Chemical and Process Engineering Technology, Jubail Industrial College, P.O. Box 10099, Jubail 31961, Saudi Arabia.
| | - Jorge Alfredo Ardila-Rey
- Department of Electrical Engineering, Universidad Técnica Federico Santa María, Santiago de Chile 8940000, Chile.
| | - Yunusa Umar
- Department of Chemical and Process Engineering Technology, Jubail Industrial College, P.O. Box 10099, Jubail 31961, Saudi Arabia.
| | - Habibur Rahman
- Department of General Studies, Jubail Industrial College, P.O. Box 10099, Jubail 31961, Saudi Arabia.
| | - Abdullahi Abubakar Mas'ud
- Department of Electrical and Electronics Engineering, Jubail Industrial College, P.O. Box 10099, Jubail 319261, Saudi Arabia.
| | - Firdaus Muhammad-Sukki
- School of Engineering, Robert Gordon University, Garthdee Road, Aberdeen AB10 7QB, Scotland, UK.
| | - Ricardo Albarracín
- Departamento de Ingeniería Eléctrica, Electrónica, Automática y Física Aplicada, Escuela Técnica Superior de Ingeniería y Diseño Industrial, Universidad Politécnica de Madrid, Ronda de Valencia 3, 28012 Madrid, Spain.
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Horňáková V, Přibyl J, Skládal P. Study of DNA immobilization on mica surface by atomic force microscopy. MONATSHEFTE FUR CHEMIE 2016. [DOI: 10.1007/s00706-016-1695-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Stoica I, Hitruc EG, Timpu D, Barboiu V, Vasilescu DS. Establishing proper scanning conditions in atomic force microscopy on polyimide and polyurethane samples and their effect on 3D surface texture parameters. SCANNING 2015; 37:335-349. [PMID: 25914262 DOI: 10.1002/sca.21216] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 03/30/2015] [Accepted: 04/07/2015] [Indexed: 06/04/2023]
Abstract
Several atomic force microscopy (AFM) tests have been carried out on both smooth (polyimide) and rough (polyurethane) surfaces so that to obtain the best results; subsequently, the optimization of experiments performed is presented. A special emphasis has been put on the effect of tip geometry, image pre-processing procedure, scanning area, resolution, pixel size, and cantilever oscillation amplitude in tapping mode, as well as on the quality of the topographical images and 3D surface texture parameters. After viewing the scanning tip and finding out its sharpness, degradation, and contamination, a simultaneous calibration in X, Y, and Z directions, lateral calibration of SPM scanners and detection of lateral non-linearity, hysteresis, creep, and cross-coupling effects has been made. We have established the following experimental parameters: proper scanning resolution (512 × 512 pixels), adequate pixel size (between 2.9 and 19.5 nm) and suitable intermittent contact region (moderate tapping) for which the AFM images present good contrast and resolution. Using these parameters, the values of 3D texture parameters remain constant. These kinds of measurements are extremely important to conduct further AFM experiments on polyimide and polyurethane surfaces under optimal conditions, thus avoiding unwanted artifacts on the morphological images or unrealistic values for the 3D surface texture parameters that might occur.
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Affiliation(s)
- Iuliana Stoica
- "Petru Poni" Institute of Macromolecular Chemistry, Iasi, Romania
- University Politehnica of Bucharest, Bucharest, Romania
| | | | - Daniel Timpu
- "Petru Poni" Institute of Macromolecular Chemistry, Iasi, Romania
| | - Virgil Barboiu
- "Petru Poni" Institute of Macromolecular Chemistry, Iasi, Romania
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Jung B, Kim K, Eom Y, Kim W. High-Pressure Solvent Vapor Annealing with a Benign Solvent To Rapidly Enhance the Performance of Organic Photovoltaics. ACS APPLIED MATERIALS & INTERFACES 2015; 7:13342-9. [PMID: 26061813 DOI: 10.1021/acsami.5b01658] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
A high-pressure solvent vapor annealing (HPSVA) treatment is suggested as an annealing process to rapidly achieve high-performance organic photovoltaics (OPVs); this process can be compatible with roll-to-roll processing methods and uses a benign solvent: acetone. Solvent vapor annealing can produce an advantageous vertical distribution in the active layer; however, conventional solvent vapor annealing is also time-consuming. To shorten the annealing time, high-pressure solvent vapor is exposed on the active layer of OPVs. Acetone is a nonsolvent for poly(3-hexylthiophene-2,5-diyl) (P3HT), but it can dissolve small amounts of 1-(3-methoxycarbonyl)-propyl-1,1-phenyl-(6,6)C61 (PCBM). Acetone vapor molecules can penetrate into the active layer under high vapor pressure conditions to alter the morphology. HPSVA induces a PCBM-rich phase near the cathode and facilitates the transport of free charge carriers to the electrode. Although P3HT is not soluble in acetone, locally rearranged P3HT crystallites are generated. The performance of OPV films was enhanced after HPSVA; the film treated at 30 kPa for 10 s showed optimum performance. Additionally, this HPSVA method could be adapted for mass production because the temporary exposure of films to high-pressure acetone vapor in ambient conditions also improved performance.
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Affiliation(s)
- Buyoung Jung
- School of Mechanical Engineering, Yonsei University, Seoul 120-749, South Korea
| | - Kangmin Kim
- School of Mechanical Engineering, Yonsei University, Seoul 120-749, South Korea
| | - Yoomin Eom
- School of Mechanical Engineering, Yonsei University, Seoul 120-749, South Korea
| | - Woochul Kim
- School of Mechanical Engineering, Yonsei University, Seoul 120-749, South Korea
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Vayer M, Nguyen TH, Sinturel C. Ruthenium staining for morphological assessment and patterns formation in block copolymer films. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.01.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Vahdat V, Carpick RW. Practical method to limit tip-sample contact stress and prevent wear in amplitude modulation atomic force microscopy. ACS NANO 2013; 7:9836-9850. [PMID: 24131354 DOI: 10.1021/nn403435z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Amplitude modulation atomic force microscopy (AM-AFM) is one of the most popular AFM modes because of the reduced tip-sample interaction, compared to contact mode AFM, and the ability to acquire high-resolution images while interrogating the sample's material composition through phase imaging. Despite the reduced tip-sample interaction, tip and sample wear can occur through gradual atomic scale processes that can significantly accumulate due to the high frequency of the tip-sample interaction and through high intermittent contact stresses. Starting from existing analytical formulations, we introduce a method for selecting an appropriate probe and free oscillation amplitude that avoids exceeding a critical contact stress to minimize tip/sample damage. The approach is presented for the case of both a Hertzian- and a Derjaguin-Müller-Toporov-like tip-sample contact. Stress maps and related simplified formulas are provided that enable one to determine allowable free oscillation amplitudes to stay below a target contact stress for given cantilever and sample parameters (combined into a single "cantilever-sample constant" that we introduce). Experimental results show how sharp silicon tips, either uncoated or coated with diamond-like carbon and silicon nitride, interacting with a hard and wear-resistant sample (ultrananocrystalline diamond) can be preserved while attaining high-quality AM-AFM images by using our proposed scheme. We also show that using our analysis to select parameters that exceed the target contact stress indeed leads to significant tip wear. This method provides AM-AFM users with a better understanding of contact stresses and enables selection of AM-AFM cantilevers and experimental parameters that preserve the tip for long periods of use and prevents the sample from damage.
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Affiliation(s)
- Vahid Vahdat
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States
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Micropattern of antibodies imaged by shear force microscopy: comparison between classical and jumping modes. Ultramicroscopy 2013; 136:176-84. [PMID: 24184681 DOI: 10.1016/j.ultramic.2013.09.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Revised: 09/10/2013] [Accepted: 09/16/2013] [Indexed: 12/21/2022]
Abstract
Quartz tuning fork devices are increasingly being used as nanosensors in Scanning Probe Microscopy. They offer some benefits with respect to standard microfabricated cantilevers in certain experimental setups including the study of biomolecules under physiological conditions. In this work, we compare three different working modes for imaging micropatterned antibodies with quartz tuning fork sensors: apart from the classical amplitude and frequency modulation strategies, for first time the jumping mode is implemented using tuning forks. Our results show that the molecules suffer less degradation when working in the jumping mode, due to the reduction of the interaction forces.
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Li H, Sun L, Shen G, Liang Q. The nanoscale phase distinguishing of PCL-PB-PCL blended in epoxy resin by tapping mode atomic force microscopy. NANOSCALE RESEARCH LETTERS 2012; 7:153. [PMID: 22360980 PMCID: PMC3311068 DOI: 10.1186/1556-276x-7-153] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2011] [Accepted: 02/23/2012] [Indexed: 05/31/2023]
Abstract
In this work, we investigated the bulk phase distinguishing of the poly(ε-caprolactone)-polybutadiene-poly(ε-caprolactone) (PCL-PB-PCL) triblock copolymer blended in epoxy resin by tapping mode atomic force microscopy (TM-AFM). We found that at a set-point amplitude ratio (rsp) less than or equal to 0.85, a clear phase contrast could be obtained using a probe with a force constant of 40 N/m. When rsp was decreased to 0.1 or less, the measured size of the PB-rich domain relatively shrank; however, the height images of the PB-rich domain would take reverse (translating from the original light to dark) at rsp = 0.85. Force-probe measurements were carried out on the phase-separated regions by TM-AFM. According to the phase shift angle vs. rsp curve, it could be concluded that the different force exerting on the epoxy matrix or on the PB-rich domain might result in the height and phase image reversion. Furthermore, the indentation depth vs. rsp plot showed that with large tapping force (lower rsp), the indentation depth for the PB-rich domain was nearly identical for the epoxy resin matrix.
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Affiliation(s)
- Huiqin Li
- Instrumental Analysis Center, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Limin Sun
- Instrumental Analysis Center, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Guangxia Shen
- Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Qi Liang
- Instrumental Analysis Center, Shanghai Jiao Tong University, Shanghai, 200240, China
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