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   Shen, Jianhao; Donnelly, Daniel; Chakravarty, Swapnajit (November 2023, Optics Letters)

   We experimentally demonstrated slow-wave-enhanced phase and spectral sensitivity in asymmetric Michelson interferometer (MI) sensors. Compared to Mach–Zehnder interferometers (MZI) that experimentally demonstrated a phase sensitivity of 84,000 rad/RIU-cm, the reflected path enhancement of the optical path length coupled with slow light enhancement with photonic crystal waveguides in on-chip slow light Michelson interferometer sensors resulted in experimentally demonstrated phase sensitivity of 277,750 rad/RIU-cm with theoretical phase sensitivity as high as 461,810 rad/RIU-cm, at the same form factor as the MZI of identical interferometer arm lengths. 

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2. High-Speed Multidimensional Optical Computing

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   Fardoost, Alireza; Vanani, Fatemeh Ghaedi; Zhu, Zheyuan; Doerr, Christopher; Pang, Shuo; Li, Guifang (October 2023, Optica Publishing Group)

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3. Solid-state synthesis of ligand-assisted lead halide nanoclusters

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   A solid-state synthesis of blue-emitting lead halide nanoclusters has been demonstrated for the first time. 

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4. A Bioluminescent Protein‐Graphene Oxide Donor‐Quencher Pair in DNA Hybridization Assays

   https://doi.org/10.1002/cplu.202200372  

   Petrucci, Sabrina; Ramón_Codina_Garcia‐Andrade, Josep; Moutsiopoulou, Angeliki; Broyles, David_B; Dikici, Emre; Daunert, Sylvia; Deo, Sapna_K (December 2022, ChemPlusChem)

   Abstract Despite fluorescent quenching with graphene oxide (GO) having shown great success in various applications ‐ bioluminescent quenching has not yet been demonstrated using GO as a quencher. To explore the ability of GO to quench bioluminescence, we usedGaussialuciferase (Gluc) as a donor and GO as a quencher and demonstrated its application in sensing of two target analytes, HIV‐1 DNA and IFN‐γ. We demonstrated that the incubation of Gluc conjugated HIV‐1 and IFN‐γ oligonucleotide probes with GO provided for monitoring of probe‐target interactions based on bioluminescence measurement in a solution phase sensing system. The limits of detection obtained for IFN‐γ and HIV‐1 DNA detection were 17 nM and 7.59 nM, respectively. Both sensing systems showed selectivity toward the target analyte. The detection of IFN‐γ in saliva matrix was demonstrated. The use of GO as a quencher provides for high sensitivity while maintaining the selectivity of designed probes to their respective targets. The use of GO as a quencher provides for an easy assay design and low cost, environmentally friendly reporter. 

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5. Photo‐Mediated RAFT Step‐Growth Polymerization With Diacrylate Monomers: Investigating Versatility and Oxygen Tolerance

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   Clouthier, Samantha Marie; Li, Jiajia; Tanaka, Joji; You, Wei (January 2025, Macromolecular Rapid Communications)

   Abstract Photomediated reversible addition fragmentation chain transfer (RAFT) step‐growth polymerization is performed using a trithiocarbonate‐based chain transfer agent (CTA) and acrylate‐based monomers both with and without a photocatalyst. The versatility of photo‐mediated RAFT step‐growth is demonstrated by one‐pot synthesis of a graft copolymer via sequential monomer addition. Furthermore, oxygen‐tolerant photo‐mediated RAFT step‐growth is demonstrated, facilitated by the appropriate selection of photocatalyst and solvent pair (zinc tetraphenyl porphyrin [ZnTPP] and dimethyl sulfoxide [DMSO]), enabling ultralow volume polymerization under open‐air conditions. 

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