Reconstruction of Bloch wavefunctions of holes in a semiconductor


Summary "A central goal of condensed-matter physics is to understand how the diverse electronic and optical properties of crystalline materials emerge from the wavelike motion of electrons through periodically arranged atoms. However, more than 90 years after Bloch derived the functional forms of electronic waves in crystals [1] (now known as Bloch wavefunctions), rapid scattering processes ha... » read more

Manufacturing Bits: Sept. 24


Free flow electricity Researchers have made some new breakthroughs in the emerging field of Weyl fermions and semi-metals, a move that could one day enable free flow electricity in systems. In 2015, Princeton University and others finally proved a massless particle that had been theorized for 85 years--the Weyl fermion. A fermion is a subatomic particle. Proposed by the mathematician and... » read more

Week in Review: IoT, Security, Auto


Internet of Things Combining artificial intelligence with unmanned aerial vehicles could provide a quicker and safer alternative to inspecting roadways for cracks, potholes, and other damage, according to a paper posted on arvix.org. “[M]anual visual inspection [is] not only tedious, time-consuming, and costly, but also dangerous for the personnel. Furthermore, the detection results are alwa... » read more

System Bits: March 11


Cryptography IC for the IoT Massachusetts Institute of Technology researchers report their development of a cryptographic circuit that could be used to protect low-power Internet of Things devices when quantum computing takes hold. [caption id="attachment_24144905" align="alignleft" width="300"] Image Credit: MIT[/caption] The research team presented a paper at the 2019 International Sol... » read more

System Bits: Jan. 2


Princeton plumbs blockchain technology Researchers at Princeton University’s School of Engineering and Applied Science are looking at how blockchain technology can provide secure financial transactions, among other applications. “Early on we realized this was a technology that was not well understood but that a lot of people were interested in,” says Ed Felten, the Robert E. Kahn Profess... » read more

Power/Performance Bits: Nov. 20


In-memory compute accelerator Engineers at Princeton University built a programmable chip that features an in-memory computing accelerator. Targeted at deep learning inferencing, the chip aims to reduce the bottleneck between memory and compute in traditional architectures. The team's key to performing compute in memory was using capacitors rather than transistors. The capacitors were paire... » read more

RISC-V: More Than a Core


The open-source RISC-V instruction set architecture (ISA) is attracting a lot of attention across the semiconductor industry, but its long-term success will depend on levels of cooperation never seen before in the semiconductor industry. The big question now is how committed the industry is to RISC-V's success. The real value that RISC-V brings is the promise of an ecosystem and the opportun... » read more

What Happened To Nanoimprint Litho?


Nanoimprint lithography (NIL) is re-emerging amid an explosion of new applications in the market. Canon, EV Group, Nanonex, Suss and others continue to develop and ship NIL systems for a range of markets. NIL is different than conventional lithography and resembles a stamping process. Initially, a lithographic system forms a pattern on a template based on a pre-defined design. Then, a separa... » read more

System Bits: Feb. 20


An evolution in electronics Restoring some semblance to those who have lost the sensation of touch has been a driving force behind Stanford University chemical engineer Zhenan Bao’s decades-long quest to create stretchable, electronically-sensitive synthetic materials. [caption id="attachment_24131783" align="aligncenter" width="300"] Zhenan Bao, the K.K. Lee professor of chemical engineer... » read more

System Bits: Dec. 19


Controlling qubits for quantum computing In a major step toward making a quantum computer using everyday materials, a team led by researchers at Princeton University has reported they’ve constructed a key piece of silicon hardware capable of controlling quantum behavior between two electrons with extremely high precision. The team said they have constructed a gate that controls interactio... » read more

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