At the closing ceremony of #PlasmonicaSchool2026, best poster prizes 🥇 have been awarded to (from left) Fabrizio Conti (#PoliMi 🇮🇹), Marion Lavignac (Institut des Nanotechnologies de Lyon 🇫🇷), Ann Céline Zimmermann (Umeå Univ. 🇸🇪): all of them lucky winner of the traditional Italian #plasmon biscuits!

[2024 OPEN ACCESS]
Numerical investigation of plasmon-enhanced emission from a nanofiber coupled single photon emitter
2024 Appl. Phys. Express 17 012003

iopscience.iop.org/article/10.3...

#APEX
#OpenAccess
#Physics
#Numerical
#plasmon
#nanofiber
#emitter

[Review]
Recent advances in the physics of Dirac plasmons in graphene and related 2D materials and their THz device applications
2026 Appl. Phys. Express 19 020103

iopscience.iop.org/article/10.3...

#APEX
#OA
#オープンアクセス
#Review
#Physics
#plasmon
#graphene
#terahertz
#2D
#laser
#transistor

How to Compute With Electron Waves Much has been made of the excessive power demands of AI, but solutions are sparse. This has led engineers to consider completely new paradigms in computing: optic...

#Plasmon #Cmos #Ai #Computer-architecture

Origin | Interest | Match

How to Compute With Electron Waves Much has been made of the excessive power demands of AI, but solutions are sparse. This has led engineers to consider completely new paradigms in computing: optic...

#Plasmon #Cmos #Ai #Computer-architecture

Origin | Interest | Match

How to Compute With Electron Waves Much has been made of the excessive power demands of AI, but solutions are sparse. This has led engineers to consider completely new paradigms in computing: optic...

#Plasmon #Cmos #Ai #Computer-architecture

Origin | Interest | Match

How to Compute With Electron Waves Much has been made of the excessive power demands of AI, but solutions are sparse. This has led engineers to consider completely new paradigms in computing: optic...

#Plasmon #Cmos #Ai #Computer-architecture

Origin | Interest | Match

How to Compute With Electron Waves Much has been made of the excessive power demands of AI, but solutions are sparse. This has led engineers to consider completely new paradigms in computing: optic...

#Plasmon #Cmos #Ai #Computer-architecture

Origin | Interest | Match

How to Compute With Electron Waves Much has been made of the excessive power demands of AI, but solutions are sparse. This has led engineers to consider completely new paradigms in computing: optic...

#Plasmon #Cmos #Ai #Computer-architecture

Origin | Interest | Match

How to Compute With Electron Waves Much has been made of the excessive power demands of AI, but solutions are sparse. This has led engineers to consider completely new paradigms in computing: optic...

#Plasmon #Cmos #Ai #Computer-architecture

Origin | Interest | Match

How to Compute With Electron Waves Much has been made of the excessive power demands of AI, but solutions are sparse. This has led engineers to consider completely new paradigms in computing: optic...

#Plasmon #Cmos #Ai #Computer-architecture

Origin | Interest | Match

How to Compute With Electron Waves Much has been made of the excessive power demands of AI, but solutions are sparse. This has led engineers to consider completely new paradigms in computing: optic...

#Plasmon #Cmos #Ai #Computer-architecture

Origin | Interest | Match

How to Compute With Electron Waves Much has been made of the excessive power demands of AI, but solutions are sparse. This has led engineers to consider completely new paradigms in computing: optic...

#Plasmon #Cmos #Ai #Computer-architecture

Origin | Interest | Match

How to Compute With Electron Waves Much has been made of the excessive power demands of AI, but solutions are sparse. This has led engineers to consider completely new paradigms in computing: optic...

#Plasmon #Cmos #Ai #Computer-architecture

Origin | Interest | Match

How to Compute With Electron Waves Much has been made of the excessive power demands of AI, but solutions are sparse. This has led engineers to consider completely new paradigms in computing: optic...

#Plasmon #Cmos #Ai #Computer-architecture

Origin | Interest | Match

How to Compute With Electron Waves Much has been made of the excessive power demands of AI, but solutions are sparse. This has led engineers to consider completely new paradigms in computing: optical, thermodynamic, reversible—the list goes on. Many of these approaches require a change in the materials used for computation, which would demand an overhaul in the CMOS fabrication techniques used today. Over the past decade, Hector De Los Santos has been working on yet another new approach. The technique would require the same exact materials used in CMOS, preserving the costly equipment, yet still allow computations to be performed in a radically different way. Instead of the motion of individual electrons—current—computations can be done with the collective, wavelike propagations in a sea of electrons, known as plasmons. De Los Santos, an IEEE Fellow, first proposed the idea of computing with plasmons back in 2010. More recently, in 2024, De Los Santos and collaborators from University of South Carolina, Ohio State University, and the Georgia Institute of Technology created a device that demonstrated the main component of plasmon-based logic: the ability to control one plasmon with another. We caught up with De Los Santos to understand the details of this novel technological proposal. ## How Plasmon Computing Works ** _IEEE Spectrum_ : How did you first come up with the idea for plasmon computing?** **De Los Santos:** I got the idea of plasmon computing around 2009, upon observing the direction in which the field of CMOS logic was going. In particular, they were following the downscaling paradigm in which, by reducing the size of transistors, you would cram more and more transistors in a certain area, and that would increase the performance. However, if you follow that paradigm to its conclusion, as the device sizes are reduced, quantum mechanical effects come into play, as well as leakage. When the devices are very small, a number of effects called short channel effects come into play, which manifest themselves as increased power dissipation. So I began to think, “How can we solve this problem of improving the performance of logic devices while using the same fabrication techniques employed for CMOS—that is, while exploiting the current infrastructure?” I came across an old logic paradigm called fluidic logic, which uses fluids. For example, jets of air whose direction was impacted by other jets of air could implement logic functions. So I had the idea, why don’t we implement a paradigm analogous to that one, but instead of using air as a fluid, we use localized electron charge density waves—plasmons. Not electrons, but electron disturbances. And now the timing is very appropriate because, as most people know, AI is very power intensive. People are coming against a brick wall on how to go about solving the power consumption issue, and the current technology is not going to solve that problem. **What is a plasmon, exactly?** **De Los Santos:** Plasmons are basically the disturbance of the electron density. If you have what is called an electron sea, you can imagine a pond of water. When you disturb the surface, you create waves. And these waves, the undulations on the surface of this water, propagate through the water. That is an almost perfect analogy to plasmons. In the case of plasmons, you have a sea of electrons. And instead of using a pebble or a piece of wood tapping on the surface of the water to create a wave that propagates, you tap this sea of electrons with an electromagnetic wave. **How do plasmons promise to overcome the scaling issues of traditional CMOS logic?** **De Los Santos:** Going back to the analogy of the throwing the pebble on the pond: It takes very, very low energy to create this kind of disturbance. The energy to excite a plasmon is on the order of attojoules or less. And the disturbance that you generate propagates very fast. A disturbance propagates faster than a particle. Plasmons propagate in unison with the electromagnetic wave that generates them, which is the speed of light in the medium. So just intrinsically, the way of operation is extremely fast and extremely low power compared to current technology. In addition to that, current CMOS technology dissipates power even if it’s not used. Here, that’s not the case. If there is no wave propagating, then there is no power dissipation. **How do you do logic operations with plasmons?** **De Los Santos:** You pattern long, thin wires in a configuration in the shape of the letter Y. At the base of the Y you launch a plasmon. Call this the bias plasmon, this is the bit. If you don’t do anything, when this plasmon gets to the junction it will split in two, so at the output of the Y, you will detect two equal electric field strengths. Now, imagine that at the Y junction you apply another wire at an angle to the incoming wire. Along that new wire, you send another plasmon, called a control plasmon. You can use the control plasmon to redirect the original bias plasmon into one leg of the Y. Plasmons are charge disturbances, and two plasmons have the same nature: They either are both positive or both negative. So, they repel each other if you force them to converge into a junction. And by controlling the angle of the control plasmon impinging on the junction, you can control the angle of the plasmon coming out of the junction. And that way you can steer one plasmon with another one. The control plasmon simply joins the incoming plasmon, so you end up with double the voltage on one leg. You can do this from both sides, add a wire and a control plasmon on either side of the junction so you can redirect the plasmon into either leg of the Y, giving you a zero or a one. ## Building a Plasmon-Based Logic Device **You’ve built this Y-junction device and demonstrated steering a plasmon to one side in 2024. Can you describe the device and its operation?** **De Los Santos:** The Y-junction device is about 5 square [micrometers]. The Y is made up of the following: a metal on top of an oxide, on top of a semiconducting wafer, on top of a ground plane. Now, between the oxide and the wafer, you have to generate a charge density—this is the sea of electrons. To do that, you apply a DC voltage between the metal of the Y and the ground plane, and that generates your static sea of electrons. Then you impinge upon that with an incoming electromagnetic wave, again between the metal and ground plane. When the electromagnetic wave reaches the static charge density, the sea of electrons that was there generates a localized electron charge density disturbance: a plasmon. Now, if you launch a plasmon by itself, it will quickly dissipate. It will not propagate very far.**** In my setup, the reason why the plasmon survives is because it is being regenerated. As the electromagnetic field propagates, you keep regenerating the plasmons, creating new plasmons at its front end. **What is left to be done before you can implement full computer logic?** **De Los Santos:** I demonstrated the partial device, that is just the interaction of two plasmons. The next step would be to demonstrate and fabricate the full device, which would have the two controls. And after that gets done, the next step is concatenating them to create a full adder, because that is the fundamental computing logic component. **What do you think are going to be the main challenges going forward?** **De Los Santos:** I think the main challenge is that the technology doesn’t follow from today’s paradigm of logic devices based on current flows. This is based on wave flows. People are accustomed to other things, and it may be difficult to understand the device. The different concepts that are brought together in this device are not normally employed by the dominant technology, and it is really interdisciplinary in nature. You have to know about metal-oxide-semiconductor physics, then you have to know about electromagnetic waves, then you have to know about quantum field theory. The knowledge base to understand the device rarely exists in a single head. Maybe another next step is to try to make it more accessible. Getting people to sponsor the work and to understand it is a challenge, not really the implementation. There’s not really a fabrication limitation. But in my opinion, the usual approaches are just doomed, for two reasons. First, they are not reversible, meaning information is lost in the computation, which results in energy loss. Second, as the devices shrink energy dissipation increases, posing an insurmountable barrier. In contrast, plasmon computation is inherently reversible, and there is no fundamental reason it should dissipate any energy during switching.****

How to Compute With Electron Waves Much has been made of the excessive power demands of AI, but solutions are sparse. This has led engineers to consider completely new paradigms in computing: optic...

#Plasmon #Cmos #Ai #Computer-architecture

Origin | Interest | Match

[2024 OPEN ACCESS]
Dynamic wide gamut color generation using highly lossy metal-based metal-dielectric-metal structure
2024 Appl. Phys. Express 17 072005

iopscience.iop.org/article/10.3...

#APEX
#Physics
#Openaccess
#dielectric
#dynamic
#lossy
#polarization
#plasmon

[Spotlights 2024]
Near-infrared gas spectroscopy based on plasmonic photodetector applied for multiple gas species
2024 Jpn. J. Appl. Phys. 63 012004

iopscience.iop.org/article/10.3...

#JJAP
#physics
#surface
#plasmon
#resonance
#spectroscopy
#sensing
#Schottky
#infrared

Precise Control of Dirac Plasmon Polaritons Advances Terahertz Nanophotonics

On 26 Aug 2025, Prof. Miriam Serena Vitiello's team showed that widening gaps in Bi₂Se₃ structures raised plasmon polariton wavevectors by up to 20 % and lengthened attenuation by over 50 %. www.nature.com/articles/s41377-025-0188... #plasmon #terahertz

Ads with "PLASMON: The Food Enricher" and "St. Ivel Gold Medal. Christmas Plum Puddings". Drawing of a plum pudding with a small adult figure standing on top and two children at its base.

December 1903 ads for Plasmon and St Ivel Christmas plum puddings

#OES_highlight Multi-resonance enhanced photothermal synergistic fiber-optic Tamm plasmon polariton tip for high-sensitivity and rapid hydrogen detection doi.org/10.29026/oes... by Prof. #Ting_Xu @NJU1902 #fiber #optics #hydrogen #sensor #Tamm #plasmon #polariton
#photothermal

[2024 OPEN ACCESS]
Numerical investigation of plasmon-enhanced emission from a nanofiber coupled single photon emitter
2024 Appl. Phys. Express 17 012003

iopscience.iop.org/article/10.3...

#APEX
#OpenAccess
#Physics
#Numerical
#plasmon
#nanofiber
#emitter

Plasmon è di nuovo italiana: NewPrinces la compra da Kraft Heinz L'azienda ha chiuso un'operazione da 120 milioni di euro che riguarda i marchi Plasmon, Nipiol, BiAglut, Aproten e Dieterba

L'azienda ha chiuso un'operazione da 120 milioni di euro che riguarda i marchi #Plasmon, Nipiol, BiAglut, Aproten e Dieterba #cibo #kraft-heinz #newprinces

Plasmon torna italiana: Kraft cede al gruppo emiliano NewPrinces per 120 milioni di euro Lo storico marchio dei biscotti per l’infanzia creato da Cesare Scotti nel 1902 genera un fatturato di circa 200 milioni di euro

➡️ Leggi l'articolo: #Plasmon #Kraft #NewPrinces #biscotti #madeinitaly

Plasmon torna italiana, Ferrero vicina a Kellogg NewPrinces ha firmato un accordo vincolante per l’acquisizione delle attività italiane di baby e specialty food di Kraft Heinz, inclusi...

➡️ Leggi l'articolo: #Plasmon #Ferrero #Kellogg #CiboItaliano #Acquisizione

NewPrinces riporta in Italia il marchio Plasmon per 120 milioni Rileva da Kraft Heinz brand di cibo per infanzia, anche Nipiol

➡️ Leggi l'articolo: #NewPrinces #Plasmon #KraftHeinz #ciboInfanzia #Nipiol

[Open Access]
Efficient generation of singlet oxygen due to localized surface plasmon resonance of silver nanoparticles in rose bengal–silver nanoparticle composite films
2023 Jpn. J. Appl. Phys. 62 065001

iopscience.iop.org/article/10.3...

#JJAP
#physics
#Openaccess
#oxygen
#photodynamic
#plasmon

The cookies were actually good, tho.

They're #Plazma biscuits, popular Serbian biscuit which is kind of a rip-off of what here in Italy is sold as #Plasmon cookies (albeit drier).