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HR-SEM images of a latex film electrochemically deposited on a stainless steel stent under a constant potential of 1.3 V for 10 min: (A) The stent after.

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Presentation on theme: "HR-SEM images of a latex film electrochemically deposited on a stainless steel stent under a constant potential of 1.3 V for 10 min: (A) The stent after."— Presentation transcript:

1 HR-SEM images of a latex film electrochemically deposited on a stainless steel stent under a constant potential of 1.3 V for 10 min: (A) The stent after deposition (B) higher magnification of the deposited film 50  m 200 nm Electrochemical Coating of a Stent

2 Electroassisted Deposition of Polylactic Acid Biodegradable Nanoparticles films before and after annealing 1.7 V 1.9 V

3 Local Electroplating by Scanning Electrochemical Microscopy (SECM) Au microelectrode AuCl 4 - A series of pulses ranging from 0.5-10 sec. Conditions: 0.1 M HCl, 1-5 mM H 2 Q, 25  m Au, approaching by O 2 reduction, E tip(dep) = 0.1 V vs. QRE Ag 0.5 s 1 s 5 s 10 s

4 A D CB Cu/HS(CH 2 ) 2 SO 3 - Cu Cu/HS(CH 2 ) 2 CO 2 - Cu/HS(CH 2 )NH 3 + Electroless Displacement on the Entire Cu Surface The effect of a short self-assembled monolayer

5 0.5 sec 1 sec 2 sec 4 sec SEM images of Ag deposits on modified Cu surfaces with 2- mercaptoetanesulfonic acid (HS(CH 2 ) 2 SO 3 - ). Effect of a Self-Assembled Monolayer on the Localized Galvanic Displacement

6 substrate Ag + Ag Fe 2+ Fe 3+ Fingerprint Ridge Ag + Fe 2+ Fe 3+ Forensic Science and Nanotechnology: Applying Nanoparticles for Visualizing Latent Fingerprints The challenge: visualizing fingerprints on wet papers The reason: the amino acids dissolve The solution: electroless deposition The problem: irreproducible Ag + +Fe 2+  Ag+Fe 3+ Sametband et al. Chem. Comm. 2007, 1142-1144

7 C 10 C 14 C 18 Comparison chainlength

8 Functionalized Coatings: Photothermal Conversion of Solar Energy (with Shlomo Magdassi) Developing a photothermal coating for high temperatures (stable at 750°C):  High absorptance (95%).  Corrosion resistance.  Good adhesion to substrate.  Inexpensive and easily applied. Metal Pigment Binder Cermet – Ceramic Metals

9 Monitoring and Cleaning of Heavy Metals Monitoring Cleaning Hg, Cd, Cr… e-e- H2OH2O Cu 2+ + [Cu(OH) 2 ] (s) OH - +H 2


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