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Asymmetrical‐Dendronized TADF Emitters for Efficient Non‐doped Solution‐Processed OLEDs by Eliminating Degenerate Excited States and Creating Solely Thermal Equilibrium Routes (2022)
Journal Article
Li, C., Harrison, A. K., Liu, Y., Zhao, Z., Zeng, C., Dias, F. B., Ren, Z., Yan, S., & Bryce, M. R. (2022). Asymmetrical‐Dendronized TADF Emitters for Efficient Non‐doped Solution‐Processed OLEDs by Eliminating Degenerate Excited States and Creating Solely Thermal Equilibrium Routes. Angewandte Chemie International Edition, 61(19), Article e202115140. https://doi.org/10.1002/anie.202115140

Two asymmetric “half-dendronized” and “half-dendronized-half-encapsulated” TADF emitters eliminate degenerate excited states, assuring a solely thermal equilibrium route for an effective spin-flip process. AEE properties can minimize the exciton quen... Read More about Asymmetrical‐Dendronized TADF Emitters for Efficient Non‐doped Solution‐Processed OLEDs by Eliminating Degenerate Excited States and Creating Solely Thermal Equilibrium Routes.

Bridge control of photophysical properties in benzothiazole-phenoxazine emitters – from thermally activated delayed fluorescence to room temperature phosphorescence (2022)
Journal Article
Paredis, S., Cardeynaels, T., Deckers, J., Danos, A., Vanderzande, D., Monkman, A. P., Champagne, B., & Maes, W. (2022). Bridge control of photophysical properties in benzothiazole-phenoxazine emitters – from thermally activated delayed fluorescence to room temperature phosphorescence. Journal of Materials Chemistry C Materials for optical and electronic devices, 10(12), 4775-4784. https://doi.org/10.1039/d1tc04885f

The bridging phenyl group in a fluorescent phenoxazine-benzothiazole donor–acceptor dyad is replaced by either a naphthalene or a thiophene moiety to probe the influence of a more extended conjugated system or the presence of a sulfur-containing hete... Read More about Bridge control of photophysical properties in benzothiazole-phenoxazine emitters – from thermally activated delayed fluorescence to room temperature phosphorescence.

Magma recharge patterns control eruption styles and magnitudes at Popocatépetl volcano (Mexico) (2022)
Journal Article
Mangler, M. F., Petrone, C. M., & Prytulak, J. (2022). Magma recharge patterns control eruption styles and magnitudes at Popocatépetl volcano (Mexico). Geology, 50(3), 366-370. https://doi.org/10.1130/g49365.1

Diffusion chronometry has produced petrological evidence that magma recharge in mafic to intermediate systems can trigger volcanic eruptions within weeks to months. However, less is known about longer-term recharge frequencies and durations priming m... Read More about Magma recharge patterns control eruption styles and magnitudes at Popocatépetl volcano (Mexico).

Spiro donor–acceptor TADF emitters: naked TADF free from inhomogeneity caused by donor acceptor bridge bond disorder. Fast rISC and invariant photophysics in solid state hosts (2022)
Journal Article
Gomes Franca, L., Danos, A., & Monkman, A. (2022). Spiro donor–acceptor TADF emitters: naked TADF free from inhomogeneity caused by donor acceptor bridge bond disorder. Fast rISC and invariant photophysics in solid state hosts. Journal of Materials Chemistry C Materials for optical and electronic devices, 10(4), 1313-1325. https://doi.org/10.1039/d1tc04484b

We have studied the thermally activated delayed fluorescence (TADF) properties of the spiro-bridged donor–acceptor molecule, 10-phenyl-10H,10′H-spiro[acridine-9,9-anthracen]-10′-one, (ACRSA) in guest–host films and used it as a probe to explore the d... Read More about Spiro donor–acceptor TADF emitters: naked TADF free from inhomogeneity caused by donor acceptor bridge bond disorder. Fast rISC and invariant photophysics in solid state hosts.

Feature issue introduction: applications of adaptive optics (2021)
Journal Article
Christou, J. C., Girkin, J., Kulcsár, C., & Young, L. K. (2021). Feature issue introduction: applications of adaptive optics. Optics Express, 29(8), 11533 - 11537. https://doi.org/10.1364/oe.418282

This feature issue of Optics Express follows the 2020 Imaging and Applied Optics Congress and comprises of articles on the development and use of adaptive optics across the broad range of domains in which the technique has been applied - including at... Read More about Feature issue introduction: applications of adaptive optics.

Maximally symmetric three-Higgs-doublet model (2021)
Journal Article
Darvishi, N., Masouminia, M., & Pilaftsis, A. (2021). Maximally symmetric three-Higgs-doublet model. Physical Review D, 104(11), https://doi.org/10.1103/physrevd.104.115017

We consider the general three-Higgs-doublet model (3HDM) and identify all limits that lead to exact Standard Model (SM) alignment. After discussing the underlying symmetries that can naturally enforce such an alignment, we focus on the most economic... Read More about Maximally symmetric three-Higgs-doublet model.

Critical assessment of pressure estimates in volcanic plumbing systems: The case study of Popocatépetl volcano, Mexico (2021)
Journal Article
Tommasini, S., Bindi, L., Savia, L., Mangler, M. F., Orlando, A., & Petrone, C. M. (2022). Critical assessment of pressure estimates in volcanic plumbing systems: The case study of Popocatépetl volcano, Mexico. Lithos, 408-409, Article 106540. https://doi.org/10.1016/j.lithos.2021.106540

Most geobarometers use chemical compositions of minerals and their host melt to estimate crystallization pressures. Crystal structural parameters such as cell and site volumes are not usually considered despite their known sensitivity to pressure. He... Read More about Critical assessment of pressure estimates in volcanic plumbing systems: The case study of Popocatépetl volcano, Mexico.

Disorder-Induced Structural Complexity in the Barlowite Family of S = 1/2 Kagomé Magnets (2021)
Journal Article
Tustain, K., McCabe, E. E., Arevalo-Lopez, A. M., Gibbs, A. S., Thompson, S. P., Murray, C. A., Ritter, C., & Clark, L. (2021). Disorder-Induced Structural Complexity in the Barlowite Family of S = 1/2 Kagomé Magnets. Chemistry of Materials, 33(24), 9638-9651. https://doi.org/10.1021/acs.chemmater.1c03247

We present a comprehensive structural and magnetic characterization of the barlowite family of S = 1/2 kagomé magnets, Cu4(OH)6FX, where X = Cl, Br, or I. Through high-resolution synchrotron X-ray and neutron powder diffraction measurements, we revea... Read More about Disorder-Induced Structural Complexity in the Barlowite Family of S = 1/2 Kagomé Magnets.

Generalized Kohn–Sham equations with accurate total energy and single-particle eigenvalue spectrum (2021)
Journal Article
Pitts, T. C., Lathiotakis, N. N., & Gidopoulos, N. (2021). Generalized Kohn–Sham equations with accurate total energy and single-particle eigenvalue spectrum. The Journal of Chemical Physics, 155(22), Article 224105. https://doi.org/10.1063/5.0071205

We propose a new generalized Kohn–Sham or constrained hybrid method, where the exchange potential is the (equally weighted) average of the nonlocal Fock–exchange term and the self-interaction-corrected exchange potential, as obtained from our constra... Read More about Generalized Kohn–Sham equations with accurate total energy and single-particle eigenvalue spectrum.

Self-Field Effects in a Josephson Junction Model for Jc in REBCO Tapes (2021)
Journal Article
Gurnham, C., & Hampshire, D. (2022). Self-Field Effects in a Josephson Junction Model for Jc in REBCO Tapes. IEEE Transactions on Applied Superconductivity, 32(4), Article 8000205. https://doi.org/10.1109/tasc.2021.3132858

We have modeled the effects of self-field on the critical current density Jc in high temperature superconducting REBCO tapes, by considering them as a collection of Josephson junctions (JJs) in parallel. We have used a 2D JJ framework for each juncti... Read More about Self-Field Effects in a Josephson Junction Model for Jc in REBCO Tapes.

Engineering spin wave spectra in thick Ni80Fe20 rings by using competition between exchange and dipolar fields (2021)
Journal Article
Zhou, X., Tartakovskaya, E., Kakazei, G., & Adeyeye, A. (2021). Engineering spin wave spectra in thick Ni80Fe20 rings by using competition between exchange and dipolar fields. Physical Review B, 104(21), Article 214402. https://doi.org/10.1103/physrevb.104.214402

Control of the spin wave dynamics in nanomagnetic elements is very important for the realization of a broad range of novel magnonic devices. Here we study experimentally the spin wave resonance in thick ferromagnetic rings (100 nm) using perpendicula... Read More about Engineering spin wave spectra in thick Ni80Fe20 rings by using competition between exchange and dipolar fields.

Soft-mode anisotropy in the negative thermal expansion material ReO3 (2021)
Journal Article
Bird, T., Wilkinson, M., Keen, D., Smith, R., Bristowe, N., Dove, M., Phillips, A., & Senn, M. (2021). Soft-mode anisotropy in the negative thermal expansion material ReO3. Physical Review B, 104(21), Article 214102. https://doi.org/10.1103/physrevb.104.214102

We use a symmetry-motivated approach to analyse neutron pair distribution function data to investigate the character of the soft phonon modes in negative thermal expansion (NTE) material ReO3. This analysis shows that its local structure is dominated... Read More about Soft-mode anisotropy in the negative thermal expansion material ReO3.

Experimental evidence of a change of exchange anisotropy sign with temperature in Zn-substituted Cu2OSeO3 (2021)
Journal Article
Moody, S., Nielsen, P., Wilson, M., Venero, D. A., Štefančič, A., Balakrishnan, G., & Hatton, P. (2021). Experimental evidence of a change of exchange anisotropy sign with temperature in Zn-substituted Cu2OSeO3. Physical Review Research, 3(4), Article 043149. https://doi.org/10.1103/physrevresearch.3.043149

We report small-angle neutron scattering from the conical state in a single crystal of Zn-substituted Cu 2 OSeO 3 . Using a 3D vector-field magnet to reorient the conical wave vector, our measurements show that the magnitude of the conical wave vecto... Read More about Experimental evidence of a change of exchange anisotropy sign with temperature in Zn-substituted Cu2OSeO3.

Anomalous magnetic exchange in a dimerized quantum magnet composed of unlike spin species (2021)
Journal Article
Curley, S., Huddart, B., Kamenskyi, D., Coak, M., Williams, R., Ghannadzadeh, S., Schneider, A., Okubo, S., Sakurai, T., Ohta, H., Tidey, J., Graf, D., Clark, S., Blundell, S., Pratt, F., Telling, M., Lancaster, T., Manson, J., & Goddard, P. (2021). Anomalous magnetic exchange in a dimerized quantum magnet composed of unlike spin species. Physical Review B, 104(21), Article 214435. https://doi.org/10.1103/physrevb.104.214435

We present here a study of the magnetic properties of the antiferromagnetic dimer material CuVOF 4 ( H 2 O ) 6 ⋅ H 2 O , in which the dimer unit is composed of two different S = 1 / 2 species, Cu(II) and V(IV). An applied magnetic field of μ 0 H c 1... Read More about Anomalous magnetic exchange in a dimerized quantum magnet composed of unlike spin species.

Intrinsic nature of spontaneous magnetic fields in superconductors with time-reversal symmetry breaking (2021)
Journal Article
Huddart, B., Onuorah, I., Isah, M., Bonfa, P., Blundell, S., Clark, S., De Renzi, R., & Lancaster, T. (2021). Intrinsic nature of spontaneous magnetic fields in superconductors with time-reversal symmetry breaking. Physical Review Letters, 127(23), Article 237002. https://doi.org/10.1103/physrevlett.127.237002

We present a systematic investigation of muon-stopping states in superconductors that reportedly exhibit spontaneous magnetic fields below their transition temperatures due to time-reversal symmetry breaking. These materials include elemental rhenium... Read More about Intrinsic nature of spontaneous magnetic fields in superconductors with time-reversal symmetry breaking.

Muon sites in PbF2 and YF3: Decohering environments and the role of anion Frenkel defects (2021)
Journal Article
Wilkinson, J., Pratt, F., Lancaster, T., Baker, P., & Blundell, S. (2021). Muon sites in PbF2 and YF3: Decohering environments and the role of anion Frenkel defects. Physical Review B, 104(22), Article L220409. https://doi.org/10.1103/physrevb.104.l220409

Muons implanted into ionic fluorides often lead to a so-called F– μ –F state, in which the time evolution of the muon spin contains information about the geometry and nature of the muon site. Nuclei more distant from the muon than the two nearest-nei... Read More about Muon sites in PbF2 and YF3: Decohering environments and the role of anion Frenkel defects.

Measurement of the tune-out wavelength for 133Cs at 880nm (2021)
Journal Article
Ratkata, A., Gregory, P., Innes, A., Matthies, J., McArd, L., Mortlock, J., Safronova, M., Bromley, S., & Cornish, S. (2021). Measurement of the tune-out wavelength for 133Cs at 880nm. Physical Review A, 104(5), Article 052813. https://doi.org/10.1103/physreva.104.052813

We perform a measurement of the tune-out wavelength, λ 0 , between the D 1 , 6 2 S 1 / 2 → 6 2 P 1 / 2 , and D 2 , 6 2 S 1 / 2 → 6 2 P 3 / 2 , transitions for 133 Cs in the ground hyperfine state ( F = 3 , m F = + 3 ) . At λ 0 , the frequency-depende... Read More about Measurement of the tune-out wavelength for 133Cs at 880nm.

Full spectrum fluorescence lifetime imaging with 0.5 nm spectral and 50 ps temporal resolution (2021)
Journal Article
Williams, G. O., Williams, E., Finlayson, N., Erdogan, A. T., Wang, Q., Fernandes, S., Akram, A. R., Dhaliwal, K., Henderson, R. K., Girkin, J. M., & Bradley, M. (2021). Full spectrum fluorescence lifetime imaging with 0.5 nm spectral and 50 ps temporal resolution. Nature Communications, 12, Article 6616. https://doi.org/10.1038/s41467-021-26837-0

The use of optical techniques to interrogate wide ranging samples from semiconductors to biological tissue for rapid analysis and diagnostics has gained wide adoption over the past decades. The desire to collect ever more spatially, spectrally and te... Read More about Full spectrum fluorescence lifetime imaging with 0.5 nm spectral and 50 ps temporal resolution.