Eldad Peretz

Scanning Tunneling Microscopy

Curriculum Vitae

March 2010

Personal Information:

I was born in September 1975, in Israel. I have a Beautiful wife, ADI, and Two Children, BAR (4 years old girl) and JONATHAN (20 Months old boy). We are currently living in NETIVOT.

Education:

2006 - Present	Ph.D In Physics, Ben Gurion University of the Negev, ISRAEL. Supervised by Prof. Yishay Manassen (Physics) and Prof. Roni Z. Shneck (Material Engineering). "Mezoscopic Elasticity of Surface and NanoScale Islands".
2003 - 2006	M.Sc In Physics, Ben Gurion University of the Negev, ISRAEL. Supervised by Prof. Yishay Manassen (Physics) and Dr. Roni Z. Shneck (Material Engineering). "Mezoscopic Elasticity of Surface and NanoScale ilands".
2000 - 2003	B.Sc in Physics, Ben Gurion University of the Negev, ISRAEL

Employment:

2003 - Present	Ben Gurion University, Physics Department. Teaching Assistant in Advanced Laboratory for undergraduate Physics students. Instructor for the following experiments: ý UHV. ý LEED. ý STM. ý X-RAY.
2008- Present	Ilan Ramon Youth physics center. ý Lecturer of "Radiation and Material" course for senior high school classes. ý Lab instructor in physics for senior high school.

Publications:

"Islands as NanometricProbes of Strain Distribution in Heterogeneous Surfaces"

H. Ralphe, E. Peretz, N. Shamir, M. Minz, R.Z. Shneck and Y. Manassen

Physical Review letters 104, 056102 (2010)

Yet to be submitted!

"Understanding of the Elastic fields that induce Self Ordering of Quantum Dots"

E. Peretz, R.Z. Shneck, D. Barlam and Y. Manassen

To be submitted soon

"Interaction energy calculation in Multy Layers Self Ordering Quantum Dots"

E. Peretz, R.Z. Shneck, D. Barlam and Y. Manassen

To be submitted soon

"Local Surface Stress Measurement on a Si (111) 7x7 Surface Using Scanning Tunneling Microscopy"

E. Peretz, A. Hazarika, D. D. Sarma and Y. Manassen

To be submitted soon

"STM determination of the Young Modulus of CdS nanoparticles"

E. Peretz, A. Hazarika, P. K. Santra, D. D. Sarma and Y. Manassen

To be submitted soon

About my Research:

My research deals with elasticity in the nanometer scale, near the lower edge of the continuum mechanics.

When one goes down the scale to the nanometer scale, how does the elasticity changes, and how the elastic properties of the material does changes. I'm asking quantitatively and qualitatively what is the change in young's modulus of a nanoparticle that have a 3nm diameter, and what is the local ( in atomic resolution ) surface stress of a silicon surface, and more questions in this direction.

In order to answer those questions I assemble Different experiment with Scanning Tunneling Microscopy (STM) and try to explain the result in with elasticity theory, for each type of question.

Using (STM) one can see both lateral and vertical atomic displacements of the surface atoms. These displacements are due to internal stress source such as steps, dislocations and more. Or due to external stress source as epitaxial deposition on top of the surface. These atomic displacements compared to computational simulations based on Finite Elements Method.

The first part of my Work was purely technological challenge. I designed and built the experimental UHV system that includes controlled two materials source evaporation system, and STM chamber. Sample is prepared in situ and transferred to the microscope.

I usually deposit Ge on top of Silicon <111> or <100> (Heteroepitaxial system) for creating external stress sources on the silicon surface. I also evaporate Si on top of Si (Homoepitaxial system).

During my work in the lab I'm using different technologies as

ý STM

ý LEED / Auger / Mass Spectrometer

ý SEM

In the Software Field I'm using

ý SolidWorks – 3D Design Sketch Softwae.

ý Patran Nastran Marc - Finite Elements Modeling and Calculations.

ý Matlab.

ý Origin.

And more.