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Nanotechnology Now - Press Release: Confined magnetic colloidal system for controllable fluid transport

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Home > Press > Confined magnetic colloidal system for controllable fluid transport
Schematics of confined colloids in different states via remote and dynamic magnetic regulation
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©Science China Press
Abstract:
Colloidal suspensions of microscopic particles show complex and interesting collective behaviors. In particular, the collective dynamics of colloids is fundamental and ubiquitous for materials assembly, robotic motion, microfluidic control, and in several biological scenarios. The collective dynamics of confined colloids can be completely different from that of free colloids: for instance, confined colloids can self-organize into vortex structures, coherent motion, or different phase behaviors. On one hand, due to the complexity of colloidal suspensions, how to finely tune the collective dynamics of confined colloids remains elusive. On the other hand, since the microscale confinement is on the same length scale as the coll ....

Xu Hou , Microfluidics Nanofluidics , Technical Institute Of Physics , Key Laboratory Of Materials , National Natural Science Foundation Of China , Engineering Research Council Of Canada , Science China , Natural Sciences , National Science , Chinese Academy Of Sciences , Science China Press , Research Funds For The Central Universities , International Union Of Pure , Xiamen University , Wave Inc , Home Press , National Key Rd Program Of China , International Union , Applied Chemistry , Beijing Based National Science Review , National Key Rd Program , National Natural Science Foundation , Overseas Expertise Introduction Project , Discipline Innovation , Fundamental Research Funds , Central Universities ,

Demonstration of the universal quantum error correcting code with superconducting qubits

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IMAGE: (a) Encoding quantum circuit of the five-qubit code. (b) Expectation values of 31 stabilizers for the encoded logical state |T> L. (c) Expectation values of logical Pauli operators and state fidelity.
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Credit: @Science China Press
Universal fault-tolerant quantum computing relies on the implementation of quantum error correction. An essential milestone is the achievement of error-corrected logical qubits that genuinely benefit from error correction, outperforming simple physical qubits. Although tremendous efforts have been devoted to demonstrate quantum error correcting codes with different quantum hardware, previous realizations are limited to be against certain types of errors or to prepare special logical states. It remains one of the greatest and also notoriously difficult challenges to realize a universal quantum error correcting code for more than a decade. ....

Shao Rong , Ming Gong , Xyu Xu , Jian Wei Pan , Shaowei Li , Cheng Zhi Peng , Yulin Wu , Xiongfeng Ma , Zhen Zhang , Futian Liang , Xiaobo Zhu , Jin Lin , Chui Deng , Youwei Zhao , Yunchao Liu , Shiyu Wang , Chen Zha , Simonc Benjamin , Qi Zhao , Anhui Initiative In Quantum Information Technologies , National Natural Science Foundation Of China , University Of Oxford , University Of Science , Chinese Academy Of Science , Technology Committee Of Shanghai Municipality , National Science ,

Confined magnetic colloidal system for controllable fluid transport

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Credit: ©Science China Press
Colloidal suspensions of microscopic particles show complex and interesting collective behaviors. In particular, the collective dynamics of colloids is fundamental and ubiquitous for materials assembly, robotic motion, microfluidic control, and in several biological scenarios. The collective dynamics of confined colloids can be completely different from that of free colloids: for instance, confined colloids can self-organize into vortex structures, coherent motion, or different phase behaviors. On one hand, due to the complexity of colloidal suspensions, how to finely tune the collective dynamics of confined colloids remains elusive. On the other hand, since the microscale confinement is on the same length scale as the colloidal size, it is difficult to determine how the colloids interplay with each other and the geometrical constraints. ....

Jing Liu , Jianyu Li , Xu Hou , Xinyu Chen , Zhizhi Sheng , Rongrong Zhang , Paolo Malgaretti , Mengchuang Zhang , Shuli Wang , Yunmao Zhang , Technical Institute Of Physics , Key Laboratory Of Materials , National Natural Science Foundation Of China , Engineering Research Council Of Canada , Natural Sciences , National Science , Chinese Academy Of Sciences , Research Funds For The Central Universities , International Union Of Pure , Xiamen University , National Key Rd Program Of China , International Union , Applied Chemistry , Beijing Based National Science Review , National Key Rd Program , National Natural Science Foundation ,

Comb-like etching regulated growth for large-area graphene nanoribbon arrays

Credit: @Science China Press
The rapid development of silicon-based transistors leads to its integration getting closer to the limit of Moore s law. Graphene is expected to become the next generation of mainstream chip materials due to its ultra-high carrier mobility. However, it is difficult to obtain a high on/off current ratio for intrinsic graphene-based transistor owing to the absence of bandgap. Graphene nanoribbons, which possess a tunable bandgap and unique optoelectrical properties, have attracted extensive attention and exploration.
Nowadays, the preparation of graphene nanoribbons is underdeveloped, and common strategies include the clip of carbon materials (graphene films, carbon nanotubes, or graphite) and direct-growth on a specific substrate surface. All these methods are inspiring but also exhibit narrow scope they require concession steps to prepare precursors or pre-functionalize substrate as templates. The hundreds of nanometers in length, alignment prob ....

Xiahong Zhou , Jianyao Huang , Le Cai , Xudong Xue , Zhiping Xu , Mechanics Laboratory , National Natural Science Foundation Of China , Institute Of Chemistry , Department Of Engineering Mechanics , National Science , Tsinghua University , Chinese Academy Of Sciences , Beijing Based National Science Review , Chinese Academy , Beijing China , Applied Mechanics Laboratory , Engineering Mechanics , Micro Mechanics , Strategic Priority Research Program , National Natural Science Foundation , லெ காய் , இயக்கவியல் ஆய்வகம் , தேசிய இயற்கை அறிவியல் அடித்தளம் ஆஃப் சீனா , நிறுவனம் ஆஃப் வேதியியல் , துறை ஆஃப் பொறியியல் இயக்கவியல் , தேசிய அறிவியல் ,

Study the boundary between bulk, nano and molecule scale of gold plasmonic physics

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As an elementary type of collective excitation, plasmon has been found to dominate the optical properties of metals. The collective behavior of electrons in plasmons reflects the important difference between condensed matter and molecule-like ones. It is of great significance to study the evolution of plasmonic response and find out the boundary.
Controversy exists on such interesting questions as the division between the nanoparticle and molecules, and the physics of mesoscopic and microscopic plasmonic evolution. A unified understanding covering the small and large size limit, namely macro / meso / micro scales with sufficiently atomic precision is thus required. Clusters, as the transition from atomic molecules to condensed matter, are the ideal candidate for studying the evolution of plasmons. ....

Jiayu Dai , Qing Dai , Runkun Chen , Zhenlin Wang , Jinsen Han , Siqi Lu , Lu Cao , Jianing Chen , Xuefeng Wang , Kang Lai , Lin Xie , Guanghou Wang , National Center , Southern University Of Science , Institute Of Physics , National University Of Defense Technology , National Science , Pico Center , Chinese Academy Of Sciences , Beijing Based National Science Review , Nanjing University , Southern University , National University , Defense Technology , Chinese Academy , Fengqi Song ,