Journal Articles

2020

  • Johannes Feldmann* / Nathan Youngblood* / Maxim Karpov*, Helge Gehring, Xuan Li, Manuel Le Gallo, Xin Fu, Anton Lukashchuk, Arslan Raja, Junqiu Liu, C. David Wright, Abu Sebastian, Tobias Kippenberg, Wolfram Pernice, Harish Bhaskaran, “Parallel convolution processing using an integrated photonic tensor core,” Under Review (2020) ArXiv

  • Xuan Li, Nathan Youngblood, Zengguang Cheng, Santiago Garcia-Cuevas Carrillo, Emanuele Gemo, Wen Zhou, Wolfram Pernice, C. David Wright, Harish Bhaskaran, “Experimental investigation of silicon and silicon nitride platforms for phase change photonic in-memory computing,” Optica 7(3), 218–225 (2020) Link

  • Johannes Feldmann, Nathan Youngblood, Xuan Li, David Wright, Harish Bhaskaran, Wolfram Pernice, “Integrated 256 cell photonic phase change memory with 512-bit capacity,” IEEE JSTQE 26(2), 1–7 (2020) Link

2019

  • Nathan Youngblood, Clement Talagrand, Benjamin Porter, Carmelo Guido Galante, Steven Kneepkens, Dmitry Yarmolich, Ruy S. Bonilla, Peiman Hosseini, Robert Taylor, Harish Bhaskaran, “Broadly-tunable smart glazing using an ultra-thin phase-change material,” Under Review (2019) ArXiv

  • Nikolaos Farmakidis* / Nathan Youngblood*, Xuan Li, James Tan, Jacob L. Swett, Zengguang Cheng, Wolfram H. P. Pernice, C. David Wright, Harish Bhaskaran, “Plasmonic nanogap enhanced phase change devices with dual electrical-optical functionality,” Science Advances 5(11), eaaw2687 (2019) Link
        - Featured on Nature Research Highlights

  • Santiago G-C Carrillo, Emanuele Gemo, Xuan Li, Nathan Youngblood, Andrew Katumba, Peter Bienstman, Wolfram Pernice, Harish Bhaskaran, C. David Wright, “Behavioral modeling of integrated phase-change photonic devices for neuromorphic computing applications,” APL Materials 7, 091113 (2019) Link

  • Syed Ghazi Sarwat, Zengguang Cheng, Nathan Youngblood, Mohd Sharizal Alias, Sapna Sinha, Jamie H. Warner, Harish Bhaskaran, “Strong Opto-structural coupling in low dimensional GeSe3 films,” Nano Letters 19 (10), 7377–7384 (2019) Link

  • Emanuele Gemo, Santiago Garcia-Cuevas Carrillo, Carlota Ruiz De Galarreta, Anna Baldycheva, Hasan Hayat, Nathan Youngblood, Harish Bhaskaran, Wolfram H. P. Pernice, C. David Wright, “Plasmonically-enhanced all-optical integrated phase-change memory,” Optics Express 27(17), 24724–24737 (2019) Link

  • Johannes Feldmann, Nathan Youngblood, C. David Wright, Harish Bhaskaran, Wolfram H. P. Pernice, “All-optical spiking neurosynaptic networks with self-learning capabilities” Nature 569, 208–214 (2019) Link
        - Featured on Nature News and Views

  • Nathan Youngblood, Carlos A. Rios, Emanuele Gemo, Johannes Feldmann, Zengguang Cheng, Anna Baldycheva, Wolfram H. P. Pernice, C. David Wright, Harish Bhaskaran, “Tunable volatility of Ge2Sb2Te5 in integrated photonics,” Advanced Functional Materials 29, 1807571 (2019) Link

  • Xuan Li, Nathan Youngblood, Carlos A. Rios, Zengguang Cheng, Wolfram H. P. Pernice, C. David Wright, Harish Bhaskaran, “Fast and reliable storage using a 5-bit, non-volatile photonic memory cell,” Optica 6(1), 1–6 (2019) Link
        - Featured on the cover of Optica

2018

  • Carlos A. Rios* / Nathan Youngblood*, Zengguang Cheng, Manuel Le Gallo, Wolfram H. P. Pernice, C. David Wright, Abu Sebastian, Harish Bhaskaran, “In-memory computing on a photonic platform,” Science Advances 5(2), eaau5759 (2018) Link
        - Featured on IBM’s research blog and Nature Electronics

  • Syed Ghazi Sarwat, Nathan Youngblood, Yat-Yin Au, Jan A. Mol, C. David Wright, Harish Bhaskaran, “Engineering interface-dependent photoconductivity in Ge2Sb2Te5 nanoscale devices,” ACS Applied Materials and Interfaces 10(51), 44906–44914 (2018) Link

  • Carlos A. Rios, Stegmaier, M., Zengguang Cheng, Nathan Youngblood, C. David Wright, Wolfram H. P. Pernice, Harish Bhaskaran, “Controlled switching of phase-change materials by evanescent-field coupling in integrated photonics [Invited],” Optical Materials Express 8(9), 2455–2470 (2018) Link

  • Zengguang Cheng, Carlos A. Rios, Nathan Youngblood, C. David Wright, Wolfram H. P. Pernice, Harish Bhaskaran, “Device-level photonic memories and logic applications using phase-change materials,” Advanced Materials 30, 1802435 (2018) Link

2017

  • Zengguang Cheng, Carlos A. Rios, Nathan Youngblood, C. David Wright, Wolfram H. P. Pernice, Harish Bhaskaran, “On-chip phase-change photonic memory and computing,” SPIE Proceedings, 10345:1034519 (2017) Link

  • Rouming Peng, Khaliji, K., Nathan Youngblood, Grassi, R., Tony Low, Mo Li, “Mid-infrared electro-optic modulation in few-layer black phosphorus,” Nano Letters, 17, 6315–6320 (2017) Link

  • Mei Xu, Yuqian Gu, Rouming Peng, Nathan Youngblood, Mo Li, “Black phosphorus mid-infrared photodetectors,” Applied Physics B, 123:130 (2017) Link

  • Nathan Youngblood, Mo Li, “Ultrafast photocurrent measurements of a black phosphorus photodetector,” Applied Physics Letters, 110, 051102 (2017) Link

  • Che Chen, Nathan Youngblood, Rouming Peng, Daehan Yoo, Daniel A. Mohr, Timothy W. Johnson, Sang-Hyun Oh, Mo Li, “Three-dimensional integration of black phosphorus photodetector with silicon photonics and nanoplasmonics,” Nano Letters, 17, 6315–6320 (2017) Link

  • Nathan Youngblood, Rouming Peng, Andrei Nemilentsau, Tony Low, Mo Li, “Layer tunable third-harmonic generation in multilayer black phosphorus,” ACS Photonics, 4(1), 8–14 (2017) Link

2016 to 2014

  • Nathan Youngblood, Mo Li, “Integration of 2D materials on a silicon photonics platform for optoelectronics applications,” Invited Review Article for Nanophotonics, 6(6), 1205–1218 (2016) Link

  • Nathan Youngblood, Che Chen, Steven J. Koester, Mo Li, “Waveguide-integrated black phosphorus photodetector with high responsivity and low dark current,” Nature Photonics, 9, 249–252 (2015) Link

  • S. C. Lee, Nathan Youngblood, Y. B. Jiang, E. J. Peterson, C. J. M. Stark, T. Detchprohm, C. Wetzel, Steven R. J. Brueck, “Incorporation of indium on cubic GaN epitaxially induced on a nanofaceted Si(001) substrate by phase transition,” Applied Physics Letters, 107(23), 231905 (2015) Link

  • Nathan Youngblood, Yoska Anugrah, Rui Ma, Steven J. Koester, Mo Li, “Multifunctional graphene optical modulator and photodetector integrated on silicon waveguides,” Nano Letters, 14(5), 2741–2746 (2014) Link

Selected Talks

  • Nathan Youngblood, Nikolaos Farmakidis, Xuan Li, Harish Bhaskaran, “Nanoscale Optoelectronic Memory with Nonvolatile Phase-Change Photonics [Invited],” Conference on Lasers and Electro-Optics (CLEO), San Jose, California USA (2020)

  • Nathan Youngblood, Xuan Li, Harish Bhaskaran, “Phase-change materials for non-volatile, integrated photonic memory and computation [Invited],” LIMIS, Changsha, China (2018)

  • Nathan Youngblood, Clement Talagrand, Peiman Hosseini, Harish Bhaskaran, “Dynamic Smart Windows Using Phase Change Materials [Late Breaking Paper],” MRS Spring Meeting, Phoenix, Arizona USA (2018)

  • Nathan Youngblood, Carlos Rios, Emanuele Gemo, Zengguang Cheng, Wolfram H. P. Pernice, C. David Wright, Harish Bhaskaran, “Phase change materials exhibit tunable volatility in integrated photonics,” SPIE Photonics West, San Francisco, California USA (2018)

  • Nathan Youngblood, Mo Li, “Ultrafast photocurrent spectroscopy in a black phosphorus van der waals heterostructure [Invited],” Conference on Lasers and Electro-Optics (CLEO), San Jose, California USA (2016)

  • Nathan Youngblood, Rouming Peng, Andrei Nemilentsau, Tony Low, Mo Li, “Thickness dependent third-harmonic generation in few-layer black phosphorus [Post-Deadline Talk],” Conference on Lasers and Electro-Optics (CLEO), San Jose, California USA (2016)