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  • Tiny quantum engines reveal useful energy hiding in “waste heat”
    A tiny machine made from just an atom and particles of light may sound impossibly simple, but it raises a surprisingly difficult question: what counts as heat, and what energy can still do useful work? University of Basel researchers have developed a theoretical framework that brings quantum physics and thermodynamics into better agreement for these […]
  • Tiny graphene wrinkles create surprisingly powerful electrical effects
    Scientists have discovered that tiny, sharply curved wrinkles in graphene can dramatically alter its electrical behavior, creating surprisingly strong charge separation. The finding suggests future electronics could be tuned by reshaping materials at the atomic scale instead of changing what they’re made of.
  • Ordinary WiFi can now identify you with near-perfect accuracy
    Ordinary WiFi networks could quietly become powerful surveillance tools, allowing people to be identified without cameras, special sensors, or even carrying a connected device. Researchers showed that unencrypted signals routinely exchanged between WiFi devices and routers can be used to create radio-based images of people and recognize them within seconds. In tests involving 197 participants, […]
  • Chemists set electrons free and break a decades-old chemistry barrier
    Chemists have developed a catalyst that breaks a long-standing rule governing which molecules receive electrons during chemical reactions. By releasing electrons directly into solution, the technique could unlock reactions—and potentially useful new molecules—that were previously out of reach.
  • Scientists just 3D printed one of the hardest metals on Earth
    A new 3D printing technique can produce exceptionally hard tungsten carbide cobalt while using less of its expensive raw materials. By softening rather than fully melting the material, researchers created defect-free samples with industrial-grade hardness and opened the door to more efficient manufacturing.
  • Mysterious Milky Way object accelerates protons beyond one quadrillion electron volts
    Scientists have identified LHAASO J1912+1014u as a cosmic accelerator that can push protons beyond one quadrillion electron volts. The finding may help reveal where the Milky Way’s most energetic cosmic rays come from and how they influence the galaxy.

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Futuristic illustration of microchips, a silicon wafer, and 3D chip stacks representing the nanoelectronics era, with the text "Scaling beyond 100nm" and "Nanoelectronics Era" in bold letters.
Scaling beyond 100nm – Nanoelectronics Era
As silicon and silicon dioxide reach their scaling limits, engineers turn to high-k materials, metal gates, and new device architectures like FinFETs and SOI. These...
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Abstract visualization of microelectronic scaling trends, showing chip layers, wafers, and nanostructures representing technological progress from larger nodes to nanoscale devices.
Scaling of CMOS: Microelectronics era
As CMOS technology shrank below 1 μm in the microelectronics era, high electric fields caused reliability issues like hot carrier effects. Techniques such as LATID...
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Illustration showing CMOS scaling progression, highlighting reduced transistor sizes and technological milestones in the sub-100nm nanoelectronics era.
Scaling of CMOS and its Issues
Dennard scaling revolutionized microelectronics by showing that reducing transistor size and voltage proportionally keeps power density constant. However, real-world limitations like subthreshold slope and interconnect...
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Fig 18. Several steps more can be done to complete several metal layers for interconnects. The last step in the process is the deposition of the final passivation layer, usually Si3N4 (silicon nitride), deposited by PECVD.
CMOS Process Steps: 3um to 1.25um
CMOS chips are made using a twin-well process, with precise tailoring of each well starting from a lightly doped substrate. Key production steps include using...
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Illustration of the nMOS fabrication process steps visualized as a factory layout, including substrate selection, device isolation, ion implantation, gate formation, and metallization.
Basic nMOS Technology: Process Steps
NMOS fabrication involves key process steps like substrate selection, isolation, gate formation, and metallization. LOCOS isolation prevents unwanted current flow, while polysilicon gates enhance process...
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Illustration representing extrinsic semiconductors, showing doped silicon structures with labeled donor or acceptor atoms.
The Physics and Technology of Extrinsic Semiconductors
Doping modifies a semiconductor by introducing donor or acceptor atoms, increasing free electron or hole concentration. This creates an n-type or p-type material, shifting the...
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