Teodorescu F, Rolland L, Ramarao V, Abderrahmani A, Mandler D, Boukherroub R, Szunerits S.
Electrochemically triggered release of human insulin from an insulin-impregnated reduced graphene oxide modified electrode. Chem. Commun. (Cambridge, U. K.)Chemical Communications (Cambridge, United Kingdom). 2015;51 (75) :14167 - 14170.
AbstractAn electrochem. insulin-delivery system based on reduced graphene oxide impregnated with insulin is described. Upon application of a potential pulse of -0.8 V for 30 min, up to 70 ± 4% of human insulin was released into a physiol. medium while preserving its biol. activity. [on SciFinder(R)]
Bera RK, Azoubel S, Mhaisalkar SG, Magdassi S, Mandler D.
Fabrication of Carbon Nanotube/Indium Tin Oxide "Inverse Tandem" Absorbing Coatings with Tunable Spectral Selectivity for Solar-Thermal Applications. Energy Technol. (Weinheim, Ger.)Energy Technology (Weinheim, Germany). 2015;3 (10) :1045 - 1050.
AbstractWe report the fabrication of a new selective "inverse tandem" absorbing coating based on carbon nanotube (CNT)/indium-tin oxide (ITO) on aluminum (Al) for mid-temp. solar-thermal application. The CNT layer is formed by spraying and functions as an excellent solar absorber whereas the ITO layer produced on top of the CNTs by sputtering serves as an IR reflector. The effect of the thickness of the ITO on the spectral selectivity of the absorbing coating was investigated. Controlling the thickness of ITO allowed the spectral selectivity of the coating to be tuned. The CNT/ITO solar coatings with optimized thickness of ITO showed excellent spectral selectivity values of absorptance (α) of 0.927 and emittance (ε) of 0.2. The performance of the coatings at high temp. after heating in air in the range of 25-300°C for different durations was also investigated. The performance and structure of the CNT/ITO coating was also compared with the wet deposition method in which the ITO coating was formed by spraying. [on SciFinder(R)]
Liu L, Yellinek S, Valdinger I, Donval A, Mandler D.
Important Implications of the Electrochemical Reduction of ITO. Electrochim. ActaElectrochimica Acta. 2015;176 :1374 - 1381.
AbstractThe electrochem. redn. of indium tin oxide (ITO) on glass is systematically studied. The light absorbance and elec. resistance of ITO increases upon redn. SEM images show that the integrate ITO films dissolve and form particles upon applying neg. potentials. The particles consist of metallic In and Sn, as characterized by XRD and XPS. The redn. of ITO strongly depends on the electrolyte conditions, mainly pH and anions. The onset potential is found to shift neg. as the pH of the electrolyte increases. NO-3 ions significantly inhibit the redn. of ITO, shifting the redn. potential neg. by ∼500 mV as compared with SO2-4, Cl- and Br-. It can also serve as inhibitor by adding very low concn. to the Cl--dominant electrolyte. Also, the electrochem. reduced ITO show excellent nonlinear optical performance, with transmittance tuneable by redn. potential and time. This suggests a promising useful application of the electrochem. redn. of ITO. [on SciFinder(R)]
Magdassi S, Zwicker C, Mhaisalkar SG, Mandler D, Levi L, Azoubel S.; 2015.
Spectrally selective solar thermal coating combining a light-absorbing coating and an infrared reflecting layer positioned on top of the absorber coating.AbstractThe invention relates to a light-absorbing element coated on at least a region of its surface with a film of at least one light-absorbing material, the light-absorbing material being assocd. with at least one binder material, the film being 1 - 20 μm thick and having light absorption of at least 90%. The invention also relates to a device comprising a light-absorbing element. The invention also claims a thermosolar device comprising a light-absorbing element. The invention also relates to a method of fabricating a light-absorbing film on a surface region of a substrate, the method comprising: (a) forming on a surface region at least one absorbing layer comprising: (I) a light-absorbing material; and (II) a polymerizable binder resin; (b) heating the at least one absorbing layer to induce polymn. of the binder resin; and (c) optionally forming at least one IR radiation reflecting layer on the polymd. binder. [on SciFinder(R)]