Welcome to the bio and molecular electronics group @ TAU!


The Richter Group is interested in the properties of self-assembly bio- and organic monolayers and materials. In particular we are exploring the electrical properties of self assembly systems that carry redox centers. These systems exhibit unusual electrical behavior that might be useful for future technologies. Specifically, the research is focused on the following issues:

  • Molecular-based devices and circuits: Utilizing the self-assembly and the charging properties of several types of molecules, we have been investigating several types of nanoscale devices and circuits ranging from two-terminal devices to vertical circuits and transistors. Using these tools we explore the electrical and optoelectronic properties of self-assembled layers made out of various molecules such as Fullerenes, Ferrocenes and proteins.

  • Thin bio-films: We investigate the mechanical , electrical and optical nature of novel thin bio-films. These include bio-composites, peptide-based thin films and bio-devices.

  • Electric Field induced lithography on the nanoscale: Electro- and dielectrophoresys methods are developed in order to control the adsorbtion and release of single particles on the nanoscale.

The clean room The probe station The scanning electron microscope (SEM) The ellipsometer Drawing of serial molecular devices SEM image of molecular device SEM image of nanocavity containing a molecular monolayer Molecule Properties Measurment system, using Mercury Drop Molecules coated Mercury Drop Small Area Contact between the Molecule Coated Mercury Drop and the semiconductor substrate Dipeptide nanotubes on a gold-on-silicon surface Dipeptide nanotubes after 24 hours of immersion in N-Methyl-2-Pyrrolidone Double concentrated dipeptide nanotubes after 24 hours of immersion in N-Methyl-2-Pyrrolidone SEM image of leaf-like structures of chemically modified dipeptide nanotubes An aligned structure of diphenylalanyne nanotubes after drying with phenol solution Dipeptides nanotubes after a 24 hours immersion in N-Methyl-2-Pyrrolidone, on silicone dioxide AFM topography image of an OptoElctronic Device MISTM electrical image of the same OptoElectronic Device MISTM electrical image of OptoElectrical staircase structure Nano Potensiometry image of source-drain potential distribution of Organic Transistor

Contact info

Dr. Shachar Richter

School of Chemistry
Ornstein Building, Room 412

Tel: (972)-3-6405711
Fax: (972)-3-6405612

srichter@post.tau.ac.il