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 creation of functional materials, devices, and systems through control of matter on the nanometer (1 to 100+ nm) length scale and the exploitation of novel properties and phenomena developed at that scale. Source. The art of manipulating materials on an atomic or molecular scale especially to build microscopic devices. Source Nanotechnology is the understanding and control of matter at dimensions between approximately 1 and 100 nanometers, where unique phenomena enable novel applications.