Seniors and Depression: The difference between depression and dementia. Depression is a mood disorder; dementias like Alzheimerâs disease, can have similar symptoms but they are different illnesses and have different treatment plans.
From a synthesis standpoint, nanotechnologies can be classified as variations of bottom-up technologies, such as self-assembly, or top-down technologies, such as lithographic methods (Box 1). Many nanotechnologies combine aspects of both strategies.
Nanotechnology is the field that uses microscopic processing techniques to produce various materials and components. Nanomaterials are used in many industries including electronics and mechanical design to produce useful items, and their applications can be seen in almost all the engineering fields.here are two methods are used to produce nanomaterials. One is called the âtop down methodâ and the other is the âbottom up method.. In the first method very small components are produced using larger parts of the material.