Author Archives: atieh

Dimension of Nanomaterials

Dimensionality is an important concept that has been applied to many different fields of study. Most objects thought of have three dimensions. They have substantial lengths, widths, and heights. However, upon minimizing one of these dimensions the object no longer is considered a three dimensional object but rather a two dimensional. Furthermore, minimizing another creates […] Continue reading

Ion Induced Secondary Electron Imaging

Ion induced secondary electron imaging is a technique used to capture the surface information of a solid sample. The process involves beaming ions to a sample which cause an ejection of electrons and materialfrom the sample. The electrons are ejected from the sample due to two driving forces of the ions, potential electron emission (PEE) […] Continue reading

Scanning Electron Microscope (SEM)

SEM is a type of microscope that is used to obtain various information of a solid sample by an electron beam scanning. The signals generated from the electron beam scanning are analyzed for external morphology, chemical composition, crystalline structure and orientation of the surface. Among these signals, secondary electrons and backscattered electrons are displayed in […] Continue reading

Quotes for making the guidelines from aspiration to success!

It is literally true that you can succeed best and quickest by helping others to succeed.    Napoleon Hill. I cannot give you a formula for success, but I can give you the formula for failure – which is: try to please everybody.    Herbert Bayard Swope What we have done for ourselves alone dies with us; […] Continue reading

Effective Books

  These effective books were chosen based on the recommendation of friends and teachers. Let me know if you want to add more on this list. 1) The one minute manager 2) Women’s way of knowing 3) How to win Friends and Influence People 4) The Habits of Highly Effective People 5) Proposals that Work 6) […] Continue reading

SEM Sample Preparation

         Since the SEM uses a beam of electrons to image a sample, few preparations are required beforehand. The surface of the sample should be electrically conductive to be imaged. Otherwise, electrons accumulate on the surface and cause scanning faults. If the sample is not conductive, it is needed to be coated with a thin […] Continue reading

Electrochemical Microsystems

        Electrochemistry means all processes of ions or molecules at charged interfaces, that is, faradaic as well as electroless processes. They take place usually at solid/liquid interfaces, but liquid/liquid interfaces may be included, too. Micro limits the systems and processes to the range bellow 1 mm in all three dimensions x, y, z. Micro-electrochemistry is […] Continue reading

Concepts of Micro-electrodeposition

            A large portion of materials around us are polar. The constituents of these materials, molecules or atoms, have positive or negative charge. Atoms in a salt structure have both positive or negative charges and the electrostatic force between opposite charges, ionic force, sticks atoms together in the solid state. A charged species is called ion. […] Continue reading

Surface Contamination in Small Systems

The ratio of the volume to the surface area of a surface has length dimension and is a representative of the system’s length scale. Length scale [m]= Volume [m3] / Surface area [m2] For systems in micro and nano scales this ratio is 10-6 and 10-9 m, respectively. This simple calculation shows the importance of […] Continue reading

My PhD Research

            Space shuttles are the tools connecting human to the worlds larger than our planet. In the same way, microchips enclosing a small lab in micro scale, are the human ways for a journey to the worlds much smaller than our planet. These micro structures are used to study single cell behavior, capillary flow, surface-particle […] Continue reading