Editing Molecular engineering (section)

{{Short description|Field of study in molecular properties}}
'''Molecular engineering''' is an emerging field of study concerned with the design and testing of molecular properties, behavior and interactions in order to assemble better materials, systems, and processes for specific functions. This approach, in which observable properties of a macroscopic system are influenced by direct alteration of a molecular structure, falls into the broader category of [[Top-down and bottom-up design|“bottom-up” design]]. This field is utmost relevant to [[Cheminformatics]], when related to the research in the [[Computational science|Computational Sciences]].

[[File:SizeVersusComplexity.png|thumb|Molecular engineering deals with material development efforts in emerging technologies that require rigorous rational molecular design approaches towards systems of high complexity.]]

Molecular engineering is highly interdisciplinary by nature, encompassing aspects of [[chemical engineering]], [[materials science]], [[Biological engineering|bioengineering]], [[electrical engineering]], [[physics]], [[mechanical engineering]], and [[chemistry]]. There is also considerable overlap with [[nanotechnology]], in that both are concerned with the behavior of materials on the scale of nanometers or smaller. Given the highly fundamental nature of molecular interactions, there are a plethora of potential application areas, limited perhaps only by one's imagination and the laws of physics. However, some of the early successes of molecular engineering have come in the fields of immunotherapy, synthetic biology, and printable electronics (see [[#Applications|molecular engineering applications]]).

Molecular engineering is a dynamic and evolving field with complex target problems; breakthroughs require sophisticated and creative engineers who are conversant across disciplines. A rational engineering methodology that is based on molecular principles is in contrast to the widespread trial-and-error approaches common throughout engineering disciplines. Rather than relying on well-described but poorly-understood empirical correlations between the makeup of a system and its properties, a molecular design approach seeks to manipulate system properties directly using an understanding of their chemical and physical origins. This often gives rise to fundamentally new materials and systems, which are required to address outstanding needs in numerous fields, from energy to healthcare to electronics. Additionally, with the increased sophistication of technology, trial-and-error approaches are often costly and difficult, as it may be difficult to account for all relevant dependencies among variables in a [[complex system]]. Molecular engineering efforts may include computational tools, experimental methods, or a combination of both.