---
author:
- 'Arash Azari [^1]'
- 'Kristian K. Müller-Nedebock [^2]'
title: Entropic competition in polymeric systems under geometrical confinement
---

Introduction 
=============

Spatial organization is one of the key features in nature and the evolution of species where, in general, the balance between size, shape, efficiency, environmental parameters, and energy consumption does matter [@harold2005molecules]. In other words, one expects and does see many examples of spatial organization, crowding, and geometrical confinement everywhere, especially inside the living cell where we have large number of components within a very compact space; examples include the DNA compaction and multiple chromosomes organization inside the nucleus of the cell where very long biopolymers are organized inside a very small space [@zhou2008; @cremer2001; @Lanctot; @Bickmore], assembly or disassembly of proteins like polypeptide chain in chaperone [@hartl2002; @MitBest2008], besides some theoretical examples of polymer confinement [@Kindt20112001; @Jun15082006; @Cook21092009; @TakaElie2006; @Taka; @Nano2006; @SuAxel2007; @MorThir2009; @smyhar; @Gao; @halverson]. In addition to the theoretical and biological implications, these ideas are relevant to the nanodevices and their fabrication [@wu2004composite; @claessens; @Xu2014; @Reisner].

![(color online) Schematic representation of the segmented chains and the confining geometry: (a) stiff segmented polymer consists of linear close-packing of united monomers $n_{m}$, which creates the segment, 