Marianneza Chatzipetrou
National Technical University of Athens
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Publication
Featured researches published by Marianneza Chatzipetrou.
Advanced Materials | 2015
Kosmas Ellinas; Marianneza Chatzipetrou; I. Zergioti; Angeliki Tserepi; Evangelos Gogolides
Superamphiphobic, (quasi-)ordered plasma-textured surfaces, coated with a perfluorinated monolayer, exhibit extreme resistance against drop-pinning for both water-like and low-surface-tension mixtures (36 mN m(-1)). The highest values reported here are 36 atm for a water-like mixture, 5 times higher than previously reported in the literature, and 7 atm for a low-surface-tension mixture, the highest ever reported value for lotus-leaf-inspired surfaces.
Biosensors and Bioelectronics | 2016
E. Skotadis; Konstantinos Voutyras; Marianneza Chatzipetrou; G. Tsekenis; Lampros Patsiouras; Leonidas Madianos; S. Chatzandroulis; I. Zergioti; D. Tsoukalas
A novel nanoparticle based biosensor for the fast and simple detection of DNA hybridization events is presented. The sensor utilizes hybridized DNAs charge transport properties, combining them with metallic nanoparticle networks that act as nano-gapped electrodes. The DNA hybridization events can be detected by a significant reduction in the sensors resistance due to the conductive bridging offered by hybridized DNA. By modifying the nanoparticle surface coverage, which can be controlled experimentally being a function of deposition time, and the structural properties of the electrodes, an optimized biosensor for the in situ detection of DNA hybridization events is ultimately fabricated. The fabricated biosensor exhibits a wide response range, covering four orders of magnitude, a limit of detection of 1nM and can detect a single base pair mismatch between probe and complementary DNA.
Langmuir | 2017
Marianneza Chatzipetrou; Maria Massaouti; George Tsekenis; Anke K. Trilling; Esther van Andel; Luc Scheres; Maarten M. J. Smulders; Han Zuilhof; I. Zergioti
In this paper, we present the immobilization of thiol-modified aptamers on alkyne- or alkene-terminated silicon nitride surfaces by laser-induced click chemistry reactions. The aptamers are printed onto the surface by laser-induced forward transfer (LIFT), which also induces the covalent bonding of the aptamers by thiol-ene or thiol-yne reactions that occur upon UV irradiation of the thiol-modified aptamers with ns laser pulses. This combination of LIFT and laser-induced click chemistry allows the creation of high-resolution patterns without the need for masks. Whereas the click chemistry already takes place during the printing process (single-step process) by the laser pulse used for the printing process, further irradiation of the LIFT-printed aptamers by laser pulses (two-step process) leads to a further increase in the immobilization efficiency.
Laser Physics Letters | 2014
Christos Boutopoulos; Marianneza Chatzipetrou; Athanasios G. Papathanasiou; I. Zergioti
In this work, we present the generation of high velocity liquid jets of a photosynthetic biomaterial in buffer solution (i.e. thylakoid membranes) and a test solution, using the laser-induced forward transfer (LIFT) technique. The high impact pressure of the collision of the jets on solid substrates, ranging from 0.045 MPa–35 MPa, resulted in strong physical immobilization of the photosynthetic biomaterial on superhydrophobic (SH) poly(methyl methacrylate) (PMMA) surfaces and hydrophobic gold surfaces. The immobilization efficiency was evaluated by fluorescence microscopy, while time-resolved imaging of the LIFT process was carried out to study the corresponding LIFT dynamics. The results show that this simple, direct and chemical-linkers-free immobilization technique is valuable for several biosensors and microfluidic applications since it can be applied to a variety of hydrophobic and SH substrates, leading to the selective immobilization of the biomaterials, due to the high spatial printing resolution of the LIFT technique.
Sensors and Actuators B-chemical | 2015
G. Tsekenis; M.K. Filippidou; Marianneza Chatzipetrou; V. Tsouti; I. Zergioti; S. Chatzandroulis
Sensors and Actuators B-chemical | 2014
Eleftherios Touloupakis; Marianneza Chatzipetrou; Christos Boutopoulos; Alkisti Gkouzou; I. Zergioti
Sensors and Actuators B-chemical | 2012
G. Tsekenis; Marianneza Chatzipetrou; J.L. Tanner; S. Chatzandroulis; D. Thanos; D. Tsoukalas; I. Zergioti
Applied Surface Science | 2013
Marianneza Chatzipetrou; G. Tsekenis; V. Tsouti; S. Chatzandroulis; I. Zergioti
Sensors and Actuators B-chemical | 2017
E. Skotadis; G. Tsekenis; Marianneza Chatzipetrou; Lampros Patsiouras; Leonidas Madianos; Panagiotis Bousoulas; I. Zergioti; D. Tsoukalas
Archive | 2017
Maria Massaouti; Marianneza Chatzipetrou; Anke Kristin Schütz-Trilling; Luc Scheres; Maarten M. J. Smulders; Johannes Teunis Zuilhof; I. Zergioti