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1. High-pressure, high-temperature molecular doping of nanodiamond

   https://doi.org/10.1126/sciadv.aau6073  

   Crane, M. J.; Petrone, A.; Beck, R. A.; Lim, M. B.; Zhou, X.; Li, X.; Stroud, R. M.; Pauzauskie, P. J. (May 2019, Science Advances)

   The development of color centers in diamond as the basis for emerging quantum technologies has been limited by the need for ion implantation to create the appropriate defects. We present a versatile method to dope diamond without ion implantation by synthesis of a doped amorphous carbon precursor and transformation at high temperatures and high pressures. To explore this bottom-up method for color center generation, we rationally create silicon vacancy defects in nanodiamond and investigate them for optical pressure metrology. In addition, we show that this process can generate noble gas defects within diamond from the typically inactive argon pressure medium, which may explain the hysteresis effects observed in other high-pressure experiments and the presence of noble gases in some meteoritic nanodiamonds. Our results illustrate a general method to produce color centers in diamond and may enable the controlled generation of designer defects. 

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2. High-pressure high-temperature melting and recrystallization of nanolamellar high-entropy alloys

   https://doi.org/10.1016/j.jallcom.2025.179470  

   Chakrabarty, Kallol; Pope, Andrew D; Yadav, Abhinav; Yang, Wuxian; Ren, Jie; Rangari, Vijaya; Chen, Wen; Vohra, Yogesh K (March 2025, Journal of Alloys and Compounds)
3. High Production Rate of High Purity, High Fidelity Nafion Nanofibers via Needleless Electrospinning

   https://doi.org/10.1021/acsapm.9b00681  

   Hwang, Monica; Karenson, Muizz O.; Elabd, Yossef A. (August 2019, ACS Applied Polymer Materials)
4. High-pressure high-temperature synthesis and thermal equation of state of high-entropy transition metal boride

   https://doi.org/10.1063/5.0045592  

   Iwan, Seth; Burrage, Kaleb C.; Storr, Bria C.; Catledge, Shane A.; Vohra, Yogesh K.; Hrubiak, Rostislav; Velisavljevic, Nenad (March 2021, AIP Advances)
5. High-resolution, high-throughput analysis of Drosophila geotactic behavior

   https://doi.org/10.1242/jeb.248029  

   Canic, Tijana; Lopez, Juan; Ortiz-Vega, Natalie; Zhai, R Grace; Syed, Sheyum (February 2025, Journal of Experimental Biology)

   ABSTRACT Drosophila’s innate response to gravity, geotaxis, has been used to assess the impact of aging and disease on motor performance. Despite its rich history, fly geotaxis continues to be largely measured manually and assessed through simplistic metrics, limiting analytic insights into the behavior. Here, we have constructed a fully programmable apparatus and developed a multi-object tracking software capable of following sub-second movements of individual flies, thus allowing quantitative analysis of geotaxis. The apparatus monitors 10 fly cohorts simultaneously, with each cohort consisting of up to 7 flies. The software tracks single flies during the entire run with ∼97% accuracy, yielding detailed climbing curve, speed and movement direction with 1/30 s resolution. Our tracking permits the construction of multi-variable metrics and the detection of transitory movement phenotypes, such as slips and falls. The platform is therefore poised to advance Drosophila geotaxis assay into a comprehensive assessment of locomotor behavior. 

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