Search Results - "Zeitler, J. A."

Graphene based plasmonic terahertz amplitude modulator operating above 100 MHz by Jessop, D. S., Kindness, S. J., Xiao, L., Braeuninger-Weimer, P., Lin, H., Ren, Y., Ren, C. X., Hofmann, S., Zeitler, J. A., Beere, H. E., Ritchie, D. A., Degl'Innocenti, R.

“…The terahertz (THz) region of the electromagnetic spectrum holds great potential in many fields of study, from spectroscopy to biomedical imaging, remote gas…”
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Understanding the Influence of Polymorphism on Phonon Spectra:  Lattice Dynamics Calculations and Terahertz Spectroscopy of Carbamazepine by Day, G. M, Zeitler, J. A, Jones, W, Rades, T, Taday, P. F

“…Rigid molecule atomistic lattice dynamics calculations have been performed to predict the phonon spectra of the four polymorphs of carbamazepine, and these…”
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Thermal Gradient Mid- and Far-Infrared Spectroscopy as Tools for Characterization of Protein Carbohydrate Lyophilizates by Mensink, M. A, Šibík, J, Frijlink, H. W, van der Voort Maarschalk, K, Hinrichs, W. L. J, Zeitler, J. A

“…Protein drugs play an important role in modern day medicine. Typically, these proteins are formulated as liquids requiring cold chain processing. To circumvent…”
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Solvent effects in the hydrogenation of 2-butanone by Akpa, B.S., D’Agostino, C., Gladden, L.F., Hindle, K., Manyar, H., McGregor, J., Li, R., Neurock, M., Sinha, N., Stitt, E.H., Weber, D., Zeitler, J.A., Rooney, D.W.

“…The complex rate behaviour observed during the hydrogenation of 2-butanone using water/IPA mixtures is attributed to a combination of mass transfer and…”
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Analysis of sustained-release tablet film coats using terahertz pulsed imaging by Ho, L., Müller, R., Römer, M., Gordon, K.C., Heinämäki, J., Kleinebudde, P., Pepper, M., Rades, T., Shen, Y.C., Strachan, C.J., Taday, P.F., Zeitler, J.A.

“…The coating quality of a batch of lab-scale, sustained-release coated tablets was analysed by terahertz pulsed imaging (TPI). Terahertz radiation (2 to 120 cm…”
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Using modified Kramers-Kronig relations to test transmission spectra of porous media in THz-TDS by Tuononen, H, Gornov, E, Zeitler, J A, Aaltonen, J, Peiponen, K-E

“…We show that modified Kramers-Kronig relations provide a useful tool to test the validity of the complex refractive index extracted from transmission terahertz…”
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Characterizing the conversion kinetics of carbamazepine polymorphs to the dihydrate in aqueous suspension using Raman spectroscopy by Tian, F., Zeitler, J.A., Strachan, C.J., Saville, D.J., Gordon, K.C., Rades, T.

“…In an aqueous environment, polymorphic forms I–III of carbamazepine all convert to the dihydrate. This study investigated the conversion of each polymorphic…”
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A comparison of quality control methods for active coating processes by Brock, D., Zeitler, J.A., Funke, A., Knop, K., Kleinebudde, P.

“…[Display omitted] Terahertz pulsed imaging (TPI) is a recent and nondestructive technique to quantify coating thickness of pharmaceutical tablet film coatings…”
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Calendering as a direct shaping tool for the continuous production of fixed-dose combination products via co-extrusion by Vynckier, A.-K., Lin, H., Zeitler, J.A., Willart, J.-F., Bongaers, E., Voorspoels, J., Remon, J.P., Vervaet, C.

“…[Display omitted] In this study calendering is used as a downstream technique to shape monolithic co-extruded fixed-dose combination products in a continuous…”
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EVA implants for controlled drug delivery to the inner ear by Bedulho das Lages, Y., Milanino, N., Verin, J., Willart, J.F., Danede, F., Vincent, C., Bawuah, P., Zeitler, J.A., Siepmann, F., Siepmann, J.

“…This study evaluated the potential of poly(ethylene vinyl acetate) (EVA) copolymers as matrix formers in miniaturised implants, allowing to achieve controlled…”
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Drug release from PLGA microparticles can be slowed down by a surrounding hydrogel by Lefol, L A, Bawuah, P, Zeitler, J A, Verin, J, Danede, F, Willart, J F, Siepmann, F, Siepmann, J

“…This study aimed to evaluate and better understand the potential impact that a layer of surrounding hydrogel (mimicking living tissue) can have on the drug…”
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Terahertz pulsed spectroscopic imaging using optimized binary masks by Shen, Y. C., Gan, L., Stringer, M., Burnett, A., Tych, K., Shen, H., Cunningham, J. E., Parrott, E. P. J., Zeitler, J. A., Gladden, L. F., Linfield, E. H., Davies, A. G.

“…We report the development of a terahertz pulsed spectroscopic imaging system based on the concept of compressive sensing. A single-point terahertz detector,…”
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Extracting accurate optical parameters from glasses usingterahertz time-domain spectroscopy by Parrott, E.P.J., Zeitler, J.A., Gladden, L.F., Taraskin, S.N., Elliott, S.R.

“…Terahertz time-domain spectroscopy (THz-TDS) can be used to characterize the optical properties of glasses in a frequency regime that is barely accessible by…”
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Visualizing liquid transport through coated pharmaceutical tablets using terahertz pulsed imaging by Dong, R., Zeitler, J. A.

“…Terahertz pulsed imaging (TPI) was used to visualize the live liquid penetration process of coated pharmaceutical tablets. Multiple features are observed…”
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Temperature dependent terahertz pulsed spectroscopy of carbamazepine by Zeitler, J. Axel, Newnham, David A., Taday, Philip F., Strachan, Clare J., Pepper, Michael, Gordon, Keith C., Rades, Thomas

“…In this study for the first time temperature dependent terahertz pulsed spectroscopy was performed on a pharmaceutical drug. The polymorphic conversion process…”
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Precise tracking of water ingress through film coated pharmaceutical tablets using terahertz pulsed imaging by Dong, R., Nassar, M., Friend, B., Teckoe, J., Zeitler, J. A.

“…Terahertz pulsed imaging (TPI) was used to visualize the live liquid penetration process of film-coated pharmaceutical tablets. Multiple features are observed…”
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Is there a water content threshold for cluster formation in glycerol? by Kolbel, J., Zeitler, J. A.

“…The stability of freeze-dried formulations due to residual water is a topic of significant interest. Glycerol, a cryoprotectant that is widely used in freeze…”
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The Role of Terahertz Dynamics in Solid-state Protein Formulations by Kolbel, J., Anuschek, M. L., Stelzl, I., Fries, W., Zeitler, J. A.

“…Utilizing four different model substances, the effect of size on the dynamics of one-component lyophilized (freeze-dried) products was studied with terahertz…”
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Stability of Protein-Sugar Lyophilizates Investigated with Terahertz Spectroscopy by Kolbel, J., Anuschek, M. L., Seifert, I., Friess, W., Zeitler, J. A.

“…Understanding of the molecular mobility in freeze-dried matrices is of high importance for the assessment and prediction of the stability of lyophilized…”
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Investigating the Influence of a Powder Compact's Geometry on Its Pore Structure and Optical Properties Using Terahertz Spectroscopy by Bawuah, P., Dong, R., Al-Sharabi, M., Markl, D., Zeitler, J. A.

“…In this study, terahertz time domain spectroscopy (THz-TDS) is used to analyze how the geometry of a compact affects its pore structure (pore shape and…”
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