university of technology and life sciences, bydgoszcz, poland adam gadomski

University of Technology and Life Sciences, Bydgoszcz, Poland

Adam Gadomski

http://www.man.bydgoszcz.pl/~agad/; http://imif.utp.edu.pl/zmpf/

(a) Institute of Mathematics & Physics, Department of Modeling of Physicochemical Processes at University of Technology and Life

Sciences (UT&LS), Bydgoszcz, Poland

Lecture presented at Jülich FZ on 12th January 2010

Model Soft-Matter Properties as Seen in Terms of Aggregating Arrangements Prevailing at

(Sub)mesoscale

http://www.man.bydgoszcz.pl/~agad/











Motivation of the Talk:


JÜLICH 2010

The term 'soft matter' refers roughly to materials that respond

readily even to modest stimuli. This responsiveness motivates at

present a wide range of technologies, cf. Nature

Materials 3, 139–140 (1st March 2004) doi:10.1038/nmat1083

.www.rsc.org/ej/DT/2000/b003331f

Objective:JÜLICH 2010

To remind that soft-matter aggregations in their (model amphiphilic, such as Langmuir-Blodgett, etc.) forms cause system’s inhomogeneization that may be assisted by either (i) internal- or (ii) external-friction conditions encountered/applied, or both, (i)-(ii), sometimes ...


Healthy AC matrix (courtesy of A. Oloyede) Degenerated AC matrix (courtesy of A. Oloyede)

Object of Interest:JÜLICH 2010

Soft matter forms a multitude of mesoscopic structures using its wealth of freedom degrees. By applying external fields such as normal or shear loads, electric fields, or guests’ inclusions,and the likes, the mesostructures show up structural transitions, which brings an appreciable change of the physical properties.

www.touchbriefings.com


Healthy AC matrix (A. Oloyede)

Degenerated AC matrix (A. Oloyede)


JÜLICH 2010Organic thin films may appear just on your way – ®A.G., Europhysics News, vol. 35/1, 20-22 (2004)

Oil spots on ground water surface - quite a common behavior

... as was the case of J. Czochralski in 1930-s, a truly macroscopic example known to everyone

A short break on Czochralski, a famous crystal grower (CZ method, adopted then by modern silicon high technology):


JÜLICH 2010


JÜLICH 2010Disparate morphologies found in Langmuir-Blodgett thin films, a survey of examples:

http://cit.iccas.ac.cn/member/liumh_e.htm

http://www.veeco.co.jp

http://cit.iccas.ac.cn/introduction.htmhttp://www.cbmn.u-bordeaux.fr/index.php?idrsrch=7

http://tainano.com


JÜLICH 2010Langmuir-Blodgett thin films, a brief explanation of the method:

See, E. Pechkova, C. Nicolini, J. Crystal Growth 231, 599 (2001), and refs. therein.


JÜLICH 2010Langmuir-Blodgett thin films, their virtual usefulness to protein crystal growth:

E. Pechkova, C. Nicolini, J. Crystal Growth 231, 599 (2001) E. Pechkova et al., Acta Cryst. D61, 809-812 (2005))


JÜLICH 2010Langmuir-Blodgett thin films, their influence on crystal growth rate (based on cubic units):

E. Pechkova, C. Nicolini, J. Crystal Growth 231, 599 (2001); ® J. Siodmiak et al., Int. J. Modern Phys. C 17/9 1359-1366 (2006)

Cubic unit

Hydrophilic amino acid Hydrophobic amino acid

3D 2D

TYP A

TYPE A TYPE B TYPE C TYPE D TYPE A90 o 90 o 90o 90 o

Basic Protein Unit of the Sub-Mesoscopic & Coarse-Grained Computer Model of Crystal Growth [® Int. J. Modern Phys. C 17/7, 1037-1054 (2006)]


JÜLICH 2010


JÜLICH 2010Principal Cause for Changes to Detect–the Total Energy

Hydrophobicity

Density

Folding and aggregation effects (based on SARW units)

Temperature

Solvent

Mass

???

(Here, the term ‘environment’ means a simulated large amphiphile (HP) matrix.)

Kowalska

Powodem tych różnych form jest to zo zwykle - dążenie do minimum energii. Powoduje ono występowanie dwóch konkurencyjnych efektów <klik> foldingu i agregacji. Głownymi czynnikami, które odpowiadają za uzyskane formy a więc na to który efekt i jak bardzo będzie przeważać są: hydrofobowość, temperatura, gęstość, masa polimeru, jego powinowactwo do rozpuszczalnika, i inne? (otwarte pytanie co jeszcze?)

university of technology and life sciences, bydgoszcz, poland adam gadomski

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