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}

}