Publications

2014
Liu L, Layani M, Yellinek S, Kamyshny A, Ling H, Lee PS, Magdassi S, Mandler D. "Nano to nano" electrodeposition of WO3 crystalline nanoparticles for electrochromic coatings. J. Mater. Chem. AJournal of Materials Chemistry A: Materials for Energy and Sustainability. 2014;2 (38) :16224 - 16229.Abstract
A nano to nano electrodeposition approach for prepg. nano-structured thin films from the dispersion of nano-objects is reported. A typical WO3 system is demonstrated, where nanocryst. films are electrodeposited onto transparent conductive electrodes such as ITO and Ag grid printed PET (Ag grid/PET) from the H2O dispersion of WO3 nanoparticles without applying high potential, adding surfactants or polymers. The process is based on the redn. of WO3, which eliminates the electrostatic repulsion between the nanoparticles causing film deposition on the cathode. The reduced WO3 (HWO3) is conductive, thus it allows further film growth towards higher thickness and coverage. The electrodeposited films consist of stacked cryst. nanoparticles, which provide a highly active surface area, facilitate the penetration of electrolyte and the intercalation/deintercalation of Li+ in the nanocrystals and therefore result in outstanding electrochromic performance and stability (92% contrast, 9 s coloring and 15 s bleaching, retaining 76% contrast after 1000 coloring-bleaching cycles). The thickness, electrochromic performance and surface coverage of the films are well tuned by potential and time. This novel nano to nano electrodeposition approach based on the electrochem. redox of nano-objects can be extended to various transition metal oxide nano-objects with different sizes and shapes. [on SciFinder(R)]
Layani M, Darmawan P, Foo WL, Liu L, Kamyshny A, Mandler D, Magdassi S, Lee PS. Nanostructured electrochromic films by inkjet printing on large area and flexible transparent silver electrodes. NanoscaleNanoscale. 2014;6 (9) :4572 - 4576.Abstract
Printed electrochromic flexible films were obtained by combining transparent silver grid electrodes formed by self-assembly and inkjet printed WO3 nanoparticles. Concd. dispersions of WO3 nanoparticles were inkjet printed on transparent plastic silver grid electrodes with a high transparency of 83% in the spectral range of 400-800 nm, and a low sheet resistance in the range of 1-5 Ω sq-1. These electrodes were used for electrochromic applications for the first time. The resultant patterned nanostructured electrochromic films maintained their coloring and bleaching performance after bending of the flexible films. [on SciFinder(R)]
Liu L, Mandler D. Patterning carbon nanotubes with silane by scanning electrochemical microscopy. Electrochem. Commun.Electrochemistry Communications. 2014;48 :56 - 60.Abstract
This work reports a novel approach of patterning carbon nanotubes (CNTs) with scanning electrochem. microscopy (SECM). The concept is based on the localized cathodic current flux, which induces the pH increase on the conductive surface confined under the microelectrode. The latter facilitates the local deposition of silane sol-gel films, which embed the CNTs from the dispersion. The patterns can be tuned by deposition potential, time and scan rate of the microelectrode, as characterized by optical microscopy, SEM (SEM), energy-dispersive X-ray anal. (EDX) and profilometry. [on SciFinder(R)]
Kraus-Ophir S, Ben-Shahar Y, Banin U, Mandler D. Perpendicular orientation of anisotropic Au-tipped CdS nanorods at the air/water interface. Adv. Mater. InterfacesAdvanced Materials Interfaces. 2014;1 (1) :1300030/1 - 1300030/9.Abstract
Anisotropic CdS nanorods tipped by Au nanoparticles on one edge (Au-CdSNRs) are perpendicularly oriented at the air/water interface, whereby all the Au tips are located in the subphase, using the Langmuir-Blodgett technique. Since these nano-objects reveal light-induced charge sepn. at the semiconductor/metal interface, it is of high interest to control their organization. The orientation of these assemblies was studied in situ while compressing the Langmuir-Blodgett trough using the π-A isotherm, Brewster angle microscopy, and horizontal touch voltammetry. All these analyses clearly confirm the induced organization of the amphiphilic Au-CdS-NRs by compression of the Langmuir layer. The compressed layers are successfully transferred by the Langmuir-Schaefer method onto transmission electron microscopy grids while maintaining the preferential orientation as analyzed by TEM, SEM, STEM, and XPS. As far as can be detd., the Langmuir-Blodgett technique was not used so far for perpendicularly orienting anisotropic nano-objects. Moreover, these findings clearly demonstrate that anisotropic amphiphilic nano-objects can be treated with some similarity to the traditional amphiphilic mol. building blocks. [on SciFinder(R)]
Metoki N, Liu L, Beilis E, Eliaz N, Mandler D. Preparation and characterization of alkylphosphonic acid self-assembled monolayers on titanium alloy by chemisorption and electrochemical deposition. LangmuirLangmuir. 2014;30 (23) :6791 - 6799.Abstract
Ti-6Al-4V alloy is the most commonly used alloy for dental and orthopedic implants. In order to improve osseointegration, different surface modification methods are usually employed, including self-assembled monolayers (SAMs). This study presents an investigation of both active (electroassisted) and passive (adsorption) approaches for the modification of Ti-6Al-4V using alkylphosphonic acid. The monolayers were characterized by cyclic voltammetry, double-layer capacitance, contact angle measurements, XPS, polarization modulation IR reflection adsorption spectroscopy, electrochem. impedance spectroscopy, and corrosion potentiodynamic polarization measurements. It is shown that the electrochem. assisted monolayers, which are assembled faster, exhibit better control over surface properties, a superior degree of order, and a somewhat higher packing d. The electrosorbed SAMs also exhibit better blockage of electron transfer across the interface and thus have better corrosion resistance. [on SciFinder(R)]
Magdassi S, Mandler D, Baidossi M, Assa R, Chernin O, Binyamin Y.; 2014. Solar-radiation-absorbing formulations, application of paint, painted metal article and related apparatus.Abstract
Paint formulations having a high absorptivity with respect to solar radiation are described. The paint formulations are also thermally and mech. durable, enabling the paint formulations to be used on components in solar thermal applications where exposure to high temps. and environmental conditions may be an issue. The paint formulation can include an oxide-based pigment, an org. binder, ≥1 additives, an inorg. filler, and/or an org. solvent. The pigment can have a relatively high absorptivity with respect to light having a wavelength in the range 250-3000 nm. Curing of the paint formulation can irreversibly convert the org. binder into an inorg. binder. [on SciFinder(R)]
2013
Vadgama P, Mandler D. Characterization of thin films and membranes. ANALYTICAL AND BIOANALYTICAL CHEMISTRY. 2013;405 (5) :1433-1434.
Liu L, Mandler D. Electro-assist deposition of binary sol-gel films with graded structure. ELECTROCHIMICA ACTA. 2013;102 :212-218.
Raveh M, Liu L, Mandler D. Electrochemical co-deposition of conductive polymer-silica hybrid thin films. PHYSICAL CHEMISTRY CHEMICAL PHYSICS. 2013;15 (26) :10876-10884.
Noyhouzer T, Valdinger I, Mandler D. Enhanced Potentiometry by Metallic Nanoparticles. ANALYTICAL CHEMISTRY. 2013;85 (17) :8347-8353.
Ning W, Yizhong H, S.Magdassi, Mandler D, Hai L, Yi L. Formation of VO2 zero-dimensional/nanoporous layers with large supercooling effects and enhanced thermochromic properties. RSC ADVANCES. 2013;3 (19) :7124-7128.
Lu Y, Liu L, Mandler D, Lee PS. High switching speed and coloration efficiency of titanium-doped vanadium oxide thin film electrochromic devices. JOURNAL OF MATERIALS CHEMISTRY C. 2013;1 (44) :7380-7386.
Fedorov RG, Mandler D. Local deposition of anisotropic nanoparticles using scanning electrochemical microscopy (SECM). PHYSICAL CHEMISTRY CHEMICAL PHYSICS. 2013;15 (8) :2725-2732.
Noyhouzer T, Mandler D. A New Electrochemical Flow Cell for the Remote Sensing of Heavy Metals. ELECTROANALYSIS. 2013;25 (1, SI) :109-115.
Shenawi S, Jaber N, Almog J, Mandler D. A novel approach to fingerprint visualization on paper using nanotechnology: reversing the appearance by tailoring the gold nanoparticles' capping ligands. CHEMICAL COMMUNICATIONS. 2013;49 (35) :3688-3690.
Lu Y, Liu L, Foo WL, Magdassi S, Mandler D, Lee PS. Self-assembled polymer layers of linear polyethylenimine for enhancing electrochromic cycling stability. JOURNAL OF MATERIALS CHEMISTRY C. 2013;1 (23) :3651-3654.
Wang N, S.Magdassi, Mandler D, Long Y. Simple sol-gel process and one-step annealing of vanadium dioxide thin films: Synthesis and thermochromic properties. THIN SOLID FILMS. 2013;534 :594-598.
Mandler D. Special issue dedicated to Anna Brainina. JOURNAL OF SOLID STATE ELECTROCHEMISTRY. 2013;17 (6, SI) :1491-1492.
Shahar T, Tal N, Mandler D. The synthesis and characterization of thiol-based aryl diazonium modified glassy carbon electrode for the voltammetric determination of low levels of Hg(II). JOURNAL OF SOLID STATE ELECTROCHEMISTRY. 2013;17 (6, SI) :1543-1552.
Maimon E, Kribus A, Flitsanov Y, Shkolnik O, Feuermann D, Zwicker C, Larush L, Mandler D, Magdassi S. Wet-chemistry based selective coatings for concentrating solar power, in NONIMAGING OPTICS: EFFICIENT DESIGN FOR ILLUMINATION AND SOLAR CONCENTRATION X. Vol 8834. SPIE ; 2013.

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