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The interplay between spatial and heliconical orientational order in twist-bend nematic materials (2021)
Journal Article
Saha, R., Feng, C., Welch, C., Mehl, G. H., Feng, J., Zhu, C., …Jakli, A. (2021). The interplay between spatial and heliconical orientational order in twist-bend nematic materials. Physical chemistry chemical physics : PCCP, 23(7), 4055-4063. https://doi.org/10.1039/d0cp06633h

The helical pitch formed by organic molecules, such as the α-helix of proteins, usually requires hydrogen bonding between chiral units and long-range positional order. It was recently found that certain liquid crystal oligomers can have a twist-bend... Read More about The interplay between spatial and heliconical orientational order in twist-bend nematic materials.

Förster resonance energy transfer and the local optical density of states in plasmonic nanogaps (2021)
Journal Article
Hamza, A. O., Viscomi, F. N., Bouillard, J. S. G., & Adawi, A. M. (2021). Förster resonance energy transfer and the local optical density of states in plasmonic nanogaps. Journal of Physical Chemistry Letters, 12(5), 1507-1513. https://doi.org/10.1021/acs.jpclett.0c03702

Förster resonance energy transfer (FRET) is a fundamental phenomenon in photosynthesis and is of increasing importance for the development and enhancement of a wide range of optoelectronic devices, including color-tuning LEDs and lasers, light harves... Read More about Förster resonance energy transfer and the local optical density of states in plasmonic nanogaps.

Molecular biaxiality determines the helical structure - infrared measurements of the molecular order in the nematic twist-bend phase of difluoro terphenyl dimer (2021)
Journal Article
Merkel, K., Loska, B., Welch, C., Mehl, G. H., & Kocot, A. (2021). Molecular biaxiality determines the helical structure - infrared measurements of the molecular order in the nematic twist-bend phase of difluoro terphenyl dimer. Physical chemistry chemical physics : PCCP, 23(7), 4151-4160. https://doi.org/10.1039/d1cp00187f

Fourier-transform infrared polarized spectroscopy was employed, to obtain the three components of the infrared absorbance for a series of bent-shaped dimers containing double fluorinated terphenyl core (DTC5Cn, n = 5, 7, 9, 11). The data were used to... Read More about Molecular biaxiality determines the helical structure - infrared measurements of the molecular order in the nematic twist-bend phase of difluoro terphenyl dimer.

The role of intermolecular interactions in stabilizing the structure of the nematic twist-bend phase (2021)
Journal Article
Merkel, K., Loska, B., Welch, C., Mehl, G. H., & Kocot, A. (2021). The role of intermolecular interactions in stabilizing the structure of the nematic twist-bend phase. RSC advances, 11(5), 2917-2925. https://doi.org/10.1039/d0ra10481g

The understanding of the relationship between molecular structure and the formation of the nematic twist-bend phase is still at an early stage of development. This is mainly related to molecular geometry, while the correlation between the nematic twi... Read More about The role of intermolecular interactions in stabilizing the structure of the nematic twist-bend phase.

Two helices from one chiral centre – self organization of disc shaped chiral nanoparticles (2020)
Journal Article
Mehl, G. H., Yu, H., Qu, W., & Liu, F. (2020). Two helices from one chiral centre – self organization of disc shaped chiral nanoparticles. Chemical science, https://doi.org/10.1039/d0sc05100d

Gold nanoparticles (AuNPs) have been prepared and surfacefunctionalized with a mixture of 1-hexanethiol co-ligands and chiral discogen ligands separated from a disulfide function via a flexible spacer. Polarized optical microscopy together with di... Read More about Two helices from one chiral centre – self organization of disc shaped chiral nanoparticles.

Analysis of emerging contaminants: A case study of the underground and 2 drinking water samples in Chandigarh, India (2020)
Journal Article
Vashisht, D., Kumar, A., Mehta, S. K., & Ibhadon, A. (in press). Analysis of emerging contaminants: A case study of the underground and 2 drinking water samples in Chandigarh, India. Environmental advances, https://doi.org/10.1016/j.envadv.2020.100002

10 The present report deals with the analysis of emerging contaminants and the quality of 11 drinking and underground water supply in Chandigarh, India. A water sampling monitoring 12 and analysis was conducted by collecting a total of 54 samples of... Read More about Analysis of emerging contaminants: A case study of the underground and 2 drinking water samples in Chandigarh, India.

The first microsolvation step for furans : new experiments and benchmarking strategies (2020)
Journal Article
Gottschalk, H. C., Poblotzki, A., Fatima, M., Obenchain, D. A., Pérez, C., Antony, J., …Schnell, M. (2020). The first microsolvation step for furans : new experiments and benchmarking strategies. The Journal of chemical physics, 152(16), 164303. https://doi.org/10.1063/5.0004465

The site-specific first microsolvation step of furan and some of its derivatives with methanol is explored to benchmark the ability of quantum-chemical methods to describe the structure, energetics, and vibrational spectrum at low temperature. Infrar... Read More about The first microsolvation step for furans : new experiments and benchmarking strategies.

Pattern formation in two-dimensional hard-core/soft-shell systems with variable soft shell profiles (2020)
Journal Article
Somerville, W. R., Somerville, W. R. C., Law, A. D., Rey, M., Vogel, N., Archer, A. J., & Buzza, D. M. A. (2020). Pattern formation in two-dimensional hard-core/soft-shell systems with variable soft shell profiles. Soft matter, 16(14), 3564-3573. https://doi.org/10.1039/d0sm00092b

Hard-core/soft shell (HCSS) particles have been shown to self-assemble into a remarkably rich variety of structures under compression due to the simple interplay between the hard-core and soft-shoulder length scales in their interactions. Most studie... Read More about Pattern formation in two-dimensional hard-core/soft-shell systems with variable soft shell profiles.

Temperature dependence of bend elastic constant in oblique helicoidal cholesterics (2020)
Journal Article
Iadlovska, O. S., Babakhanova, G., Mehl, G. H., Welch, C., Cruickshank, E., Strachan, G. J., …Shiyanovskii, S. V. (2020). Temperature dependence of bend elastic constant in oblique helicoidal cholesterics. Physical Review Research, 2(1), https://doi.org/10.1103/physrevresearch.2.013248

Elastic moduli of liquid crystals, known as Frank constants, are of quintessential importance for understanding fundamental properties of these materials and for the design of their applications. Although there are many methods to measure the Frank... Read More about Temperature dependence of bend elastic constant in oblique helicoidal cholesterics.

Removal of Human Leukemic Cells from Peripheral Blood Mononuclear Cells by Cell Recognition Chromatography with Size Matched Particle Imprints (2020)
Journal Article
Chester, R., Das, A. A. K., Medlock, J., Nees, D., Allsup, D. J., Madden, L. A., & Paunov, V. N. (2020). Removal of Human Leukemic Cells from Peripheral Blood Mononuclear Cells by Cell Recognition Chromatography with Size Matched Particle Imprints. ACS Applied Bio Materials, 3(2), 789-800. https://doi.org/10.1021/acsabm.9b00770

We report a cell recognition chromatography approach for blood cancer cell separation from healthy peripheral blood mononuclear cells (PBMCs) based on sizematched functionalized particle imprints. Negative imprints were prepared from layers of 15 μm... Read More about Removal of Human Leukemic Cells from Peripheral Blood Mononuclear Cells by Cell Recognition Chromatography with Size Matched Particle Imprints.

Surface-Modified Zinc Oxide Nanoparticles for Antialgal and Antiyeast Applications (2020)
Journal Article
Halbus, A. F., Horozov, T. S., & Paunov, V. N. (2020). Surface-Modified Zinc Oxide Nanoparticles for Antialgal and Antiyeast Applications. ACS Applied Nano Materials, 3(1), 440-451. https://doi.org/10.1021/acsanm.9b02045

We explored the factors and mechanisms of the anti-yeast and anti-algal effect of zinc oxide nanoparticles (ZnONPs) coated with zinc sulfide (ZnS), silica (SiO2), poly(sodium 4-styrene sulfonate) sodium salt (PSS) and poly(allylamine hydrochloride) (... Read More about Surface-Modified Zinc Oxide Nanoparticles for Antialgal and Antiyeast Applications.

Enhanced chemical etch rate of borosilicate glass via spatially resolved laser-generated color centers (2019)
Journal Article
Serkov, A. A., & Snelling, H. V. (2020). Enhanced chemical etch rate of borosilicate glass via spatially resolved laser-generated color centers. Journal of physics. D, applied physics, 53(13), https://doi.org/10.1088/1361-6463/ab6515

© 2020 IOP Publishing Ltd. In this work, it is shown that controllable increases in chemical reactivity of borosilicate glass can be induced through spatially resolved femtosecond laser irradiation at fluence values significantly lower than the damag... Read More about Enhanced chemical etch rate of borosilicate glass via spatially resolved laser-generated color centers.

A cholesteric liquid crystal device having stable uniform lying helix structure (2019)
Journal Article
Yip, W. C., Welch, C., Mehl, G. H., & Wilkinson, T. D. (2020). A cholesteric liquid crystal device having stable uniform lying helix structure. Journal of Molecular Liquids, 299, https://doi.org/10.1016/j.molliq.2019.112141

A cholesteric liquid crystal device having the uniform lying helix (ULH) structure shows stable and reversible characteristics and it has been demonstrated for the analogue modulation in 10 micro-second response time at room temperature. The device c... Read More about A cholesteric liquid crystal device having stable uniform lying helix structure.

"Ghost" silica nanoparticles of "host"-inherited antibacterial action (2019)
Journal Article
Halbus, A. F., Horozov, T. S., & Paunov, V. N. (2019). "Ghost" silica nanoparticles of "host"-inherited antibacterial action. ACS applied materials & interfaces, 11(42), 38519−38530. https://doi.org/10.1021/acsami.9b14403

Copyright © 2019 American Chemical Society. We fabricated surface-rough mesoporous silica nanoparticles ("ghost" SiO2NPs) by using composite mesoporous copper oxide nanoparticles ("host" CuONPs) as templates, which allowed us to mimic their surface m... Read More about "Ghost" silica nanoparticles of "host"-inherited antibacterial action.

Fabrication of Human Keratinocyte Cell Clusters for Skin Graft Applications by Templating Water-in-Water Pickering Emulsions (2019)
Journal Article
Celik, S., Dominici, S., Filby, B., Das, A., Madden, L. A., & Paunov, V. N. (2019). Fabrication of Human Keratinocyte Cell Clusters for Skin Graft Applications by Templating Water-in-Water Pickering Emulsions. Biomimetics, 4(3), https://doi.org/10.3390/biomimetics4030050

Most current methods for the preparation of tissue spheroids require complex materials, involve tedious physical steps and are generally not scalable. We report a novel alternative, which is both inexpensive and up-scalable, to produce large quantiti... Read More about Fabrication of Human Keratinocyte Cell Clusters for Skin Graft Applications by Templating Water-in-Water Pickering Emulsions.

Controlling the antimicrobial action of surface modified magnesium hydroxide nanoparticles (2019)
Journal Article
Halbus, A. F., Horozov, T. S., & Paunov, V. N. (2019). Controlling the antimicrobial action of surface modified magnesium hydroxide nanoparticles. Biomimetics, 4(2), https://doi.org/10.3390/biomimetics4020041

Magnesium hydroxide nanoparticles (Mg(OH)2NPs) have recently attracted significant attention due to their wide applications as environmentally friendly antimicrobial nanomaterials, with potentially low toxicity and low fabrication cost. Here, we desc... Read More about Controlling the antimicrobial action of surface modified magnesium hydroxide nanoparticles.

Oligomeric odd-even effect in liquid crystals (2019)
Journal Article
Saha, R., Babakhanova, G., Parsouzi, Z., Rajabi, M., Gyawali, P., Welch, C., …Jakli, A. (2019). Oligomeric odd-even effect in liquid crystals. Materials Horizons, 6(9), 1905-1912. https://doi.org/10.1039/c9mh00428a

Odd-even effects, oscillations in properties of materials comprised of an odd or even number of connected repeating units, are well-known phenomena in materials science. In organic materials, they are usually associated with the number of methylene... Read More about Oligomeric odd-even effect in liquid crystals.

Percolation threshold enables optical resistive‐memory switching and light‐tuneable synaptic learning in segregated nanocomposites (2019)
Journal Article
Jaafar, A. H., O'Neill, M., Kelly, S. M., Verrelli, E., & Kemp, N. T. (2019). Percolation threshold enables optical resistive‐memory switching and light‐tuneable synaptic learning in segregated nanocomposites. Advanced Electronic Materials, 5(7), https://doi.org/10.1002/aelm.201900197

An optical memristor where the electrical resistance memory depends on the history of both the current flowing through the device and the irradiance of incident light onto it is demonstrated. It is based on a nanocomposite consisting of functionalize... Read More about Percolation threshold enables optical resistive‐memory switching and light‐tuneable synaptic learning in segregated nanocomposites.

Bioimprint aided cell recognition and depletion of human leukemic HL60 cells from peripheral blood (2019)
Journal Article
Das, A. A., Medlock, J., Liang, H., Nees, D., Allsup, D. J., Madden, L. A., & Paunov, V. N. (2019). Bioimprint aided cell recognition and depletion of human leukemic HL60 cells from peripheral blood. Journal of Materials Chemistry B, 7(22), 3497-3504. https://doi.org/10.1039/c9tb00679f

We report a large scale preparation of bioimprints of layers of cultured human leukemic HL60 cells which can perform cell shape and size recognition from a mixture with peripheral blood mononuclear cells (PBMCs). We demonstrate that the bioimprint-ce... Read More about Bioimprint aided cell recognition and depletion of human leukemic HL60 cells from peripheral blood.

Self-grafting copper oxide nanoparticles show a strong enhancement of their anti-algal and anti-yeast action (2019)
Journal Article
Halbus, A. F., Horozov, T. S., & Paunov, V. N. (2019). Self-grafting copper oxide nanoparticles show a strong enhancement of their anti-algal and anti-yeast action. Nanoscale advances, 1(6), 2323-2336. https://doi.org/10.1039/c9na00099b

© 2019 The Royal Society of Chemistry. We have developed and tested copper oxide nanoparticles (CuONPs) grafted with (3-glycidyloxypropyl)trimethoxysilane (GLYMO) and coupled with 4-hydroxyphenylboronic acid (4-HPBA), which provides a very strong boo... Read More about Self-grafting copper oxide nanoparticles show a strong enhancement of their anti-algal and anti-yeast action.