Binghamton Biological Soft Matter Mechanics Lab

Dr. Guy K. German

Associate Professor, Department of Biomedical Engineering, Department of Pharmaceutical Sciences.

        

Publications

2023

Ultraviolet light induces mechanical and structural changes in full thickness human skin 

ZA. Ittycheri, Z. W. Lipsky, T. Hookway and G. K. German

(Accepted for publication in Journal of the Mechanical Behavior of Biomedical Materials) 

2022

Mechanisms and Implications of Bacterial Invasion across the Human Skin Barrier

Z. W. Lipsky, M. Patsy, C. N. H. Marques, and G. K. German

(Accepted for publication in Microbiology Spectrum) 

Systematic evaluation and modeling of SARA-CoV-2 UVC Disinfection

S. Freeman, K Kibler, Z. W. Lipsky, S. Jin, G. K German and K. Ye

Scientific Reports, 12: 5869. 

Biomechanical fracture mechanics of composite layered skin-like materials

C. Maiorana, R. Jotawar and G. K. German

Soft Matter, 18, 2104 - 2112 

2021

 Hyperelastic Material Properties of Axonal fibers in Brain White Matter

P. Chavoshnejad, Guy K. German and M. J. Razavi

Brain Multiphysics, 2, 100035 

 Effect of collagen degradation on the mechanical behavior and wrinkling of skin

P. Chavoshnejad, A. H. Foroughi, N. Dhandapani, G. K. German, and M. J. Razavi 

Physical Review E, 104, 034406 

2020

 Mechanical, compositional, and microstructural changes caused by human skin maceration.

N. Dhandapani, K. Samuelsson, M. Sköld, K. Zohrevand, and G. K. German

Extreme Mechanics Letters, 41, 101017 

 Lipid depletion enables permeation of Staphylococcus aureus bacteria through human stratum corneum.

Z. W. Lipsky, C. N. H. Marques and G. K. German, 

Tissue barriers 8(2)

2019

Embedding topography enables fracture guidance in soft solids

C. H. Maiorana, M. Erbe, T. Blank, Z. W. Lipsky, and Guy K. German

Scientific Reports 9: 13493.


Ultraviolet light degrades the mechanical and structural properties of human stratum corneum

Z. W. Lipsky and G. K German

Journal of the Mechanical Behavior of Biomedical Materials, 100, 103391

https://www.sciencedirect.com/science/article/pii/S1751616119305892

Non-invasive in-vivo quantification of human skin tension lines

D. Laiacona, J. Cohen, K. Coulon, Z. W. Lipsky, C. Maiorana, R. Boltyanskiy, E. R. Dufresne, and G. K German

Acta Biomaterialia, 88, 141-148

https://www.sciencedirect.com/science/article/pii/S1742706119301072

2018

Viscoelastic properties of Pseudomonas aeruginosavariant biofilms

E. S. Gloag, G. K. German, P. Stoodley, and D. J. Wozniak

Scientific Reports 8:9691

https://www.nature.com/articles/s41598-018-28009-5

Heterogeneous ceramide distributions alter spatially resolved growth of Staphylococcus aureus on human stratum corneum

J. M. Cleary, Z. W. Lipsky, M. Kim, C. N. H. Marques and G. K. German

Journal of the Royal Society Interface 15: 20170848.

http://rsif.royalsocietypublishing.org/content/15/141/20170848

2017

Electrospray Deposit Structure of Nanoparticle Suspensions

N. Brown, Y. Zhu, G. K. German, X. Yong, and P. R. Chiarot

Journal of Electrostatics 90, 2017: 67-73

https://www.sciencedirect.com/science/article/pii/S0304388617301511

Nanoparticle Size-Specific Actin Rearrangement and Barrier Dysfunction of Endothelial Cells

Y. Liu, N. Rogel, K. Harada, L. Jarett, C. H. Maiorana, G. K. German, G. Mahler, A. L. Doiron, Nanotoxicology, 2017: 1-11

http://www.tandfonline.com/doi/abs/10.1080/17435390.2017.1371349

Non-ionising UV light increases the optical density of hygroscopic self assembled DNA crystal films.

A. E. Gasperini, S. Sanchez, A. L. Doiron, M. Lyles and G. K. German

Scientific Reports 7, Article number: 6631

https://www.nature.com/articles/s41598-017-06884-8

Control of human skin wettability using the pH ofanionic surfactant solution treatments

L. Bromberg, X. Liu, I. Wang, S. Smith, K. Schwicker, Z. Eller, and G. K. German

Colloids and Surfaces B: Biointerfaces, 157, 366-372

http://www.sciencedirect.com/science/article/pii/S0927776517303570

Measuring and modeling contractile drying in human stratum corneum

X. Liu and G. K. German

Journal of Visualized Experiments  e55336

http://www.jove.com/pdf/55336/jove-protocol-55336-measuring-and-modeling-contractile-drying-in-human-stratum-corneum?status=a57342k

2016

The global mechanical properties and multi-scale failure mechanics of heterogeneous human stratum corneum

X. Liu, J. Cleary and G. K. German

Acta Biomaterialia 43, 78-87

Acta Biomaterialia

2015

The effects of barrier disruption and moisturization on the dynamic drying mechanics of human stratum corneum  X. Liu and G. K. German,

Journal of the Mechanical Behavior of Biomedical Materials 49, 80-89

2014

Traction Force Microscopy in Physics and Biology

R. W. Style, R. Boltyanskiy, G. K. German, C. Hyland, C. W. MacMinn, A. F. Mertz, and E. R. Dufresne,

Soft Matter 10(23), 4047-4055

2013

Patterning Droplets on Surfaces by Durotaxis

R. W. Style, Y. Che, S. J. Park, B. M. Weon, J. H. Je, C. Hyland, G. K. German, M. Power, L. A. Wilen, J. S. Wettlaufer and E. R. Dufresne,

Proceedings of the National Academy of the Sciences 110(31), 12541-12544

Surfactant treatments influence drying mechanics in human stratum corneum

G. K. German, E. Pashkovski and E. R. Dufresne, 

Journal of Biomechanics 46(13), pp. 2145-2151.


Imaging stress and strain in the fracture of drying colloidal films

Y. Xu, G. K. German, A. F. Mertz, E. R. Dufresne

Soft Matter 9(14), 3735-3740

2012

Heterogeneous drying stresses in stratum corneum

G. K. German, E. Pashkovski, Y.Xu, A.F. Mertz, C. Hyland, W. C. Engl and E. R. Dufresne,

Biophysical Journal  102(11), pp. 2424-2432.

Scaling of Traction Forces with Size of Cohesive Cell Colonies

A. F. Mertz, S. Banerjee, Y. Che, G. K. German, Y. Xu, C. Hyland, M. C. Marchetti, V. Horsley and 

E. R. Dufresne. 

Physical Review Letters 108, 198101.

2010

The spreading behaviour of viscoplastic drops

G. German and V. BertolaColloids and Surfaces A: Physiochemical and Engineering Aspects 366, pp. 18-26

The free fall of viscoplastic drops

G. German and V. Bertola

Journal of Non-Newtonian Fluid Mechanics 165, pp. 825-828.

Formation of viscoplastic drops by capillary breakup

G. German and V. Bertola

Physics of Fluids, 22, 033101.

2009

Review of drop impact models and validation with high viscosity Newtonian fluids

G. German and V. Bertola.

Atomization and Sprays 19, pp. 787-807

Impact of shear-thinning and yield- stress drops on solid substrates

G. German and V. Bertola.

Journal of Physics : Condensed Matter, 21, 375111.