last update: 2018-07

Peer Reviewed Publications (* Corresponding Authors) H-index: 4

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6. G. Liu, X. Feng, K. Lang, R. Zhang, D. Guo, S. Yang, S. Cheng*,

Dynamics of Shape-Persistent Giant Molecules - Zimm-like Melt, Elastic Plateau, and Cooperative Glass-like,

Macromolecules, 50 (17), 6637-6646, (2017), [pdf]

5. G. Liu* and S.Q. Wang*,

Entangled linear polymer solutions at high shear: from strain softening to hardening

Macromolecules, 49 (24), 9647-9654, (2016), [pdf]

4. G. Liu*, H. Ma, H. Lee, H. Xu, S. Cheng, H. Sun, T. Chang, R.P. Quirk and S.Q. Wang*,

Long chain branched polymers to prolong homogeneous stretching and to resist melt breakup,

Polymer, 54, 6608-6616 (2013), [pdf]

3. G. Liu, S. Cheng, H. Lee, H. Ma, H. Xu, T. Chang, R.P. Quirk and S.Q. Wang*,

Strain hardening in startup shear of long chain branched polymer solutions,

Physical Review Letter, 111 (6), 068302,(2013), [pdf]

2. G. Liu, H. Sun, S. Rangou, K. Ntetsikas, A. Avgeropoulos and S.Q. Wang*,

Studying the origin of "strain hardening": basic difference between extension and shear,

Journal of Rheology, 57 (1), 89-104, (2013), [pdf] Most Cited Articles in 2013

1. G. Liu, and S.Q. Wang*, A Particle Tracking Velocimetric Study of Stress Relaxation Behavior of Entangled Polystyrene Solutions after Stepwise Shear,

Macromolecules, 45 (16), 6741-6747, (2012), [pdf]

C1. S.Q. Wang*, G. Liu, S. Cheng, P. E. Boukany, Y.Y. Wang, X. Li,

Letter to the Editor: Sufficiently entangled polymers do show shear strain localization at high enough Weissenberg numbers

Journal of Rheology, 58 (4), 1059-1069, (2014)

C2. H. Sun, G. Liu, K. Ntetsikas, A. Avgeropoulos, and S.Q. Wang*,

Rheology of entangled polymers not far above glass transition temperature: transient elasticity and inter-segmental viscous stress

Macromolecules, 47 (16), 5839-5850, (2014)

C3. H. Sun, P. Lin, G. Liu, K. Ntetsikas, A. Avgeropoulos, K. Misichronis, N. Kang, J. Liu, J. Mays, and S.Q. Wang*,

Failure behavior after stepwise uniaxial extension of entangled polymer melts

Journal of Rheology, 59 (3), 751-767, (2015)

C4. S. Cheng, Y. Lu, G. Liu, and S.Q. Wang*,

Finite cohesion due to chain entanglement in polymer melts,

Soft Matter, 12 (14), 3340-3351, (2016)

Fulltext Access Community:

https://www.researchgate.net/profile/Gengxin_Liu/

https://uakron.academia.edu/GengxinLIU

Presentations:

2017 Oral, The Society of Rheology 89th annual meeting, Denver, CO

2017 Poster, UMass Summer School on Soft Solids and Complex Fluids, Amherst, MA

2016 Oral, 12th National Graduate Research Polymer Conference, Akron, OH

2014 Oral, The Society of Rheology 86th annual meeting, Philadelphia, PA

Oral, 30th International Conference of Polymer Processing Society (PPS-30), Cleveland, OH

2014 Oral, American Physical Society (APS) March meeting, Denver, CO

Poster, Active Fluids: Bridging Complex Fluids and Biofluids, Aspen Center for Physics, CO

2014 Poster, Gordon Conference and Seminar: Colloidal, Macromolecular & Polyelectrolyte Solutions, Ventura, CA

2013 Oral, The Society of Rheology 85th annual meeting, Montreal, Canada

2013 Oral, American Physical Society March meeting, Baltimore, MD

2012 Oral and Poster, The Society of Rheology 84th annual meeting, Pasadena, CA

Poster, American Institute of Chemical Engineers (AIChE) Annual Meeting, Pittsburg, PA

2012 Oral, American Physical Society March meeting, Boston, MA

2011 Oral, The Society of Rheology 83rd annual meeting, Cleveland, OH

Codes that I use:

1. Pom-Pom model, and with drag strain coupling, shear and extension

as in G. LIU, etc. PRL, 2013

2. BSW model, to fit and plot SAOS , multi modes

as in G. LIU, etc. Polymer, 2013

3. Fit Edward-Vilgis model

as in G. LIU, etc. Polymer, 2013

4. Single mode Rolie-Poly model to calculate: continuous extension, and shear, step extension and shear /stress relaxation, and switch rates experiments

5. SAOS TTS Master curve by Matlab

Funding