Brongersma Group Plasmonics and Photonics at Stanford University

@article{li2024optical,

title = {Optical devices as thin as atoms},

author = {Melissa Li and Qitong Li and Mark L Brongersma and Harry A Atwater},

doi = {10.1126/science.adk7707},

year  = {2024},

date = {2024-12-13},

urldate = {2024-12-13},

journal = {Science},

volume = {386},

issue = {6727},

pages = {1226-1228},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{ha2024optoelectronic,

title = {Optoelectronic metadevices},

author = {Son Tung Ha and Qitong Li and Joel KW Yang and Hilmi Volkan Demir and Mark L Brongersma and Arseniy I Kuznetsov},

doi = {10.1126/science.adm7442},

year  = {2024},

date = {2024-11-29},

urldate = {2024-11-29},

journal = {Science},

volume = {386},

issue = {6725},

pages = {7442},

abstract = {Metasurfaces have introduced new opportunities in photonic design by offering unprecedented, nanoscale control over optical wavefronts. These artificially structured layers have largely been used to passively manipulate the flow of light by controlling its phase, amplitude, and polarization. However, they can also dynamically modulate these quantities and manipulate fundamental light absorption and emission processes. These valuable traits can extend their application domain to chipscale optoelectronics and conceptually new optical sources, displays, spatial light modulators, photodetectors, solar cells, and imaging systems. New opportunities and challenges have also emerged in the materials and device integration with existing technologies. This Review aims to consolidate the current research landscape and provide perspectives on metasurface capabilities specific to optoelectronic devices, giving new direction to future research and development efforts in academia and industry.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{hoang2024understanding,

title = {Understanding the Impact of Contact-Induced Strain on the Electrical Performance of Monolayer WS2 Transistors},

author = {Lauren Hoang and Marc Jaikissoon and \c{C}a\u{g}ıl K\"{o}ro\u{g}lu and Zhepeng Zhang and Robert KA Bennett and Jung-Hwan Song and Jerry A Yang and Jung-Soo Ko and Mark L Brongersma and Krishna C Saraswat and Eric Pop and Andrew J Mannix},

doi = {10.1021/acs.nanolett.4c02616},

year  = {2024},

date = {2024-10-04},

journal = {Nano Letters},

abstract = {Two-dimensional (2D) electronics require low contact resistance (RC) to approach their fundamental limits. WS2 is a promising 2D semiconductor that is often paired with Ni contacts, but their operation is not well understood considering the nonideal alignment between the Ni work function and the WS2 conduction band. Here, we investigate the effects of contact size on nanoscale monolayer WS2 transistors and uncover that Ni contacts impart stress, which affects the WS2 device performance. The strain applied to the WS2 depends on contact size, where long (1 μm) contacts (RC ≈ 1.7 kΩ·μm) show a 78% reduction in RC compared to shorter (0.1 μm) contacts (RC ≈ 7.8 kΩ·μm). We also find that thermal annealing can relax the WS2 strain in long-contact devices, increasing RC to 8.5 kΩ·μm. These results reveal that thermo-mechanical phenomena can significantly influence 2D semiconductor\textendashmetal contacts, presenting opportunities to optimize device performance through nanofabrication and thermal budget.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{ou2024achieving,

title = {Achieving optical transparency in live animals with absorbing molecules},

author = {Zihao Ou and Yi-Shiou Duh and Nicholas J Rommelfanger and Carl HC Keck and Shan Jiang and Kenneth Brinson Jr and Su Zhao and Elizabeth L Schmidt and Xiang Wu and Fan Yang and Betty Cai and Han Cui and Wei Qi and Shifu Wu and Adarsh Tantry and Richard Roth and Jun Ding and Xiaoke Chen and Julia A Kaltschmidt and Mark L Brongersma and Guosong Hong},

doi = {10.1126/science.adm6869},

year  = {2024},

date = {2024-09-06},

journal = {Science},

volume = {385},

issue = {6713},

pages = {eadm6869},

abstract = {Optical imaging plays a central role in biology and medicine but is hindered by light scattering in live tissue. We report the counterintuitive observation that strongly absorbing molecules can achieve optical transparency in live animals. We explored the physics behind this observation and found that when strongly absorbing molecules dissolve in water, they can modify the refractive index of the aqueous medium through the Kramers-Kronig relations to match that of high-index tissue components such as lipids. We have demonstrated that our straightforward approach can reversibly render a live mouse body transparent to allow visualization of a wide range of deep-seated structures and activities. This work suggests that the search for high-performance optical clearing agents should focus on strongly absorbing molecules.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{tertuliano2024high,

title = {High absorptivity nanotextured powders for additive manufacturing},

author = {Ottman A Tertuliano and Philip J DePond and Andrew C Lee and Jiho Hong and David Doan and Luc Capaldi and Mark Brongersma and X Wendy Gu and Manyalibo J Matthews and Wei Cai and Adrian J Lew},

doi = {10.1126/sciadv.adp0003},

year  = {2024},

date = {2024-09-04},

journal = {Science Advances},

volume = {10},

issue = {36},

pages = {eadp0003},

abstract = {The widespread application of metal additive manufacturing (AM) is limited by the ability to control the complex interactions between the energy source and the feedstock material. Here, we develop a generalizable process to introduce nanoscale grooves to the surface of metal powders which increases the powder absorptivity by up to 70% during laser powder bed fusion. Absorptivity enhancements in copper, copper-silver, and tungsten enable energy-efficient manufacturing, with printing of pure copper at relative densities up to 92% using laser energy densities as low as 83 joules per cubic millimeter. Simulations show that the enhanced powder absorptivity results from plasmon-enabled light concentration in nanoscale grooves combined with multiple scattering events. The approach taken here demonstrates a general method to enhance the absorptivity and printability of reflective and refractory metal powders by changing the surface morphology of the feedstock without altering its composition.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{kop2024ten,

title = {Ten principles for responsible quantum innovation},

author = {Mauritz Kop and Mateo Aboy and Eline De Jong and Urs Gasser and Timo Minssen and I Glenn Cohen and Mark Brongersma and Teresa Quintel and Luciano Floridi and Raymond Laflamme},

doi = {10.1088/2058-9565/ad3776},

year  = {2024},

date = {2024-04-22},

journal = {Quantum Science and Technology},

volume = {9},

issue = {3},

pages = {035013},

abstract = {This paper proposes a set of guiding principles for responsible quantum innovation. The principles are organized into three functional categories: safeguarding, engaging, and advancing (SEA), and are linked to central values in responsible research and innovation (RRI). Utilizing a global equity normative framework and literature-based methodology, we connect the quantum-SEA categories to promise and perils specific to quantum technology (QT). The paper operationalizes the responsible QT framework by proposing ten actionable principles to help address the risks, challenges, and opportunities associated with the entire suite of second-generation QTs, which includes the quantum computing, sensing, simulation, and networking domains. Each quantum domain has different technology readiness levels, risks, and affordances, with sensing and simulation arguably being closest to market entrance. Our proposal aims to catalyze a much-needed interdisciplinary effort within the quantum community to establish a foundation of quantum-specific and quantum-tailored principles for responsible quantum innovation. The overarching objective of this interdisciplinary effort is to steer the development and use of QT in a direction not only consistent with a values-based society but also a direction that contributes to addressing some of society's most pressing needs and goals.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}