Near-lossless 2D semiconductor phase modulators using hybrid tungsten oxyselenide/graphene electrodes
Researchers from Nanyang Technological University, University of Chicago, University of Wisconsin, Chungnam National University, National Institute for Materials Science, MIT and Singapore University of technology and design have developed hybrid tungsten oxyselenide/graphene electrodes that enable near-lossless optical phase modulation in two-dimensional semiconductor devices. The work targets a long-standing trade-off in integrated photonics, where improving modulation efficiency typically increases optical loss, especially for graphene-based designs at telecommunication wavelengths.
Schematic of the fabricated device structure, consisting of a capacitor stack (monolayer WS2/hBN/graphene/TOS) integrated onto a SiN microring resonator. Right top: Side-view schematic of the device, highlighting electrical contacts with the bottom WS2 layer and top graphene electrode, connected independently to gold electrodes for voltage biasing. Right bottom: Optical image of the actual device. Image from: Light: Science & Applications
In this approach, monolayer WSe₂ is converted by UV–ozone treatment into tungsten oxyselenide (TOS), which acts as a strong p‑type dopant for graphene. Heavy p‑doping shifts graphene’s Fermi level such that its absorption around 1550 nm is strongly suppressed, while its conductivity is enhanced, allowing graphene to function as a transparent, low-resistance top electrode in the near‑infrared.
Source: https://www.graphene-info.com/near-lossless-2d-semiconductor-phase-modulators-using-hybrid-tungsten
Anyone can join.
Anyone can contribute.
Anyone can become informed about their world.
"United We Stand" Click Here To Create Your Personal Citizen Journalist Account Today, Be Sure To Invite Your Friends.
Before It’s News® is a community of individuals who report on what’s going on around them, from all around the world. Anyone can join. Anyone can contribute. Anyone can become informed about their world. "United We Stand" Click Here To Create Your Personal Citizen Journalist Account Today, Be Sure To Invite Your Friends.
LION'S MANE PRODUCT
Try Our Lion’s Mane WHOLE MIND Nootropic Blend 60 Capsules
Mushrooms are having a moment. One fabulous fungus in particular, lion’s mane, may help improve memory, depression and anxiety symptoms. They are also an excellent source of nutrients that show promise as a therapy for dementia, and other neurodegenerative diseases. If you’re living with anxiety or depression, you may be curious about all the therapy options out there — including the natural ones.Our Lion’s Mane WHOLE MIND Nootropic Blend has been formulated to utilize the potency of Lion’s mane but also include the benefits of four other Highly Beneficial Mushrooms. Synergistically, they work together to Build your health through improving cognitive function and immunity regardless of your age. Our Nootropic not only improves your Cognitive Function and Activates your Immune System, but it benefits growth of Essential Gut Flora, further enhancing your Vitality.
Our Formula includes: Lion’s Mane Mushrooms which Increase Brain Power through nerve growth, lessen anxiety, reduce depression, and improve concentration. Its an excellent adaptogen, promotes sleep and improves immunity. Shiitake Mushrooms which Fight cancer cells and infectious disease, boost the immune system, promotes brain function, and serves as a source of B vitamins. Maitake Mushrooms which regulate blood sugar levels of diabetics, reduce hypertension and boosts the immune system. Reishi Mushrooms which Fight inflammation, liver disease, fatigue, tumor growth and cancer. They Improve skin disorders and soothes digestive problems, stomach ulcers and leaky gut syndrome. Chaga Mushrooms which have anti-aging effects, boost immune function, improve stamina and athletic performance, even act as a natural aphrodisiac, fighting diabetes and improving liver function. Try Our Lion’s Mane WHOLE MIND Nootropic Blend 60 Capsules Today. Be 100% Satisfied or Receive a Full Money Back Guarantee. Order Yours Today by Following This Link.
| Visits: | 1,764,812,571 |
| Stories: | 8,559,638 |
Whistler Blowers, Insiders
