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  • BSMM
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    • BSMM
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Media

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Publications

Research

Binghamton Biological Soft Matter Mechanics Lab

Guy K. German

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

Publications

2025

Is Tattooing an Injection? Evaluating the Mechanics of Ink Placement

S Noble, K Moseman, S Medina, GK German, J Swierk

Acta Materialia (Review Article)

On the repeatability of wrinkling topography patterns in the fingers of water immersed human skin

R Laytin, GK German

Journal of the Mechanical Behavior of Biomedical Materials 165, 106935

Quantification of the mechanical effects of saline on human ex vivo stratum corneum

L Moogan, GK German

Journal of the Mechanical Behavior of Biomedical Materials 168, 107016


Elucidating the Mechanistic Process of Age Induced Human Skin Wrinkling

A. Ittycheri , A. Wiltshire and G. K. German

Journal of the Mechanical Behavior of Biomedical Materials, 107080

Non-Invasive Monitoring of Palmitoyl Hexapeptide-12 in Human Skin Layers: Mechanical Interaction with Skin Components and its Potential Skincare Benefits 

C. Ligorio E. Tavasoli, A. Ittycheri, A. M. Kotowska, M. H. Khan, D. J. Scurr, S. A. Gupta, L. V. Moogan, J. Emmetsberger, F. Lu, G K. German, T. Mammone, and Alvaro Mata.

(Accepted for publication in ACS: Applied Biomaterials) 

2024

Plastocapillarity: Partial and full Newtonian drop embedding into immiscible yield stress substrates

A Ittycheri, B Biniszkiewicz, C Rodriguez, GK German

Journal of Colloid and Interface Science 667, 617-623


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 SARS-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 

The precision of macroscale mechanical measurements is limited by the inherent structural heterogeneity of human stratum corneum.

Z. W. Lipsky and G. K. German

Acta Biomaterialia, 130, 308-316 

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

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

2018

Viscoelastic properties of Pseudomonas aeruginosavariant biofilms

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

Scientific Reports 8:9691

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.

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

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

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

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

Measuring and modeling contractile drying in human stratum corneum

X. Liu and G. K. German

Journal of Visualized Experiments  e55336

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

Rebound of continuous droplet streams from an immiscible liquid pool

W. J. Doak, D. M. Laiacona, G. K. German and P. R. Chiarot

Physics of Fluids 28(5) 057104.

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.

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