Group Members

Interest Area:

Molecular Electronics and Molecular Bio electronics

Ariel Caster

M.Sc. student.
 This research presents a new hybrid vertical device, suitable for I-V measurements of organic molecules deposited by a Self Assembled Monolayer (SAM) technique.
Using vertical architecture, it is possible to establish an area of "standing" molecules, completely encapsulated between two metal electrodes.
The fabrication procedure promise Silicon technology compatibility.
The fabrication process flow consists of a patterned gold layer, as a bottom electrode, Si3N4 layer as a dielectric platform, nano-cavities (50nm X 50nm) etched into the Si3N4 layer at the center of the electrode.
Subsequently, thiolated molecules are self-assembled onto the bottom surface of the nano-cavities.
The next step is a selective deposition of gold nanoparticles (GNPs) on the top-side of the molecular layer, acting as the metallic contact.
The final step is a "delicate" indirect deposition and patterning of a palladium top electrode.
This device architecture provides a scientific precedence for future implementation in molecular electronic circuits, as well as a platform for molecular transistors.
 Diagrame of the device
Nano-Cavity after Pd evaporation
SEM image of completed device

Simon Verleger


 This research has investigated the electrical properties of specific alkanthiols in a mercury/tungsten-diselenide interface.
The setup consists of a mercury drop electrode and a micrometer stage to establish contact.
The organic molecules are sandwiched between the mercury and the semiconductor.
The project is focused on investigating the influence of certain geometric parameters like contact area, contact angle and the chain length of the molecules.
Mercury drop before the contact
Small contact of the mercury drop to the semiconductor surface

Interest Area:

Surface Science

Dr. Guilia Meshulam

Interest Area:

Biological Thin Films

Netta Hendler

M.Sc. student.
 Peptide nanotubes have extraordinary potential applications as sensors, in generally and as biosensors, in particularly.
We are trying to control the uniformity of peptide films for deposition on standard substrates.
In our research work we are developing methods to control the organization of peptide nanotubes in a homogenous form by introducing a chemical modification technique.
By using the relations between the structure of the film and various crystallization conditions, we are providing not only uniformity control, but also morphological control of these nanotubes during deposition. 		A solution of dipeptide nanotubes mixed with N-methylpyrrolidinone that was heated and dried on a gold substrate.
Dried dipeptide nanotubes with phenol solved in methanol solution.
A solution of dipeptide nanotubes mixed with N-methylpyrrolidinone that was heated and dried on a gold substrate.

Interest Area:

Molecular Electronics and Molecular Bio electronics
Novel Methods in Scanning Probe Microscopy
Biological Thin Films
Surface Science

Dr. Shachar Richter


 We have developed several electrical characterization techniques based on Atomic Force Microscopy, such as Closed Loop Nano Potentiometry, Metal-Insulator-SemiConductor Tunneling Microscopy (MISTM) and High Band - Width Conducting AFM.








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