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arXiv 2302.13809cond-mat.mtrl-scicond-mat.mes-hall
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新型强PUFs半导体二维材料的合成

Synthesis of a Semiconducting 2D Material for Novel Strong PUFs

Peter Eder

摘要:

物联网中互连设备数量的指数级增长对网络安全和加密领域提出了越来越多的挑战。对于经过身份验证的使用和通信,每个设备都必须安全地存储和应用密钥,而不会让潜在的攻击者通过软件或硬件攻击访问它们。2002年,物理不可克隆功能的概念出现,以抵消与这一趋势相关的固有威胁。物理无序系统被外部刺激激发,从而可以被唯一地识别。2D材料在从其大块形式分离到少数或单层时具有深刻不同的特性。过渡金属二硫属化物代表了潜在的PUF候选者,因为与石墨烯不同,它们具有带隙并且因此是半导体的。此外,可以由它们形成随机渗流网络,预期其具有唯一可识别但不可预测的电响应。这项工作为实现由TMD(即二硫化钨)组成的PUF奠定了基础。该材料已合成使用化学气相沉积在近距离的方法。为了制备由WS2组成的大规模互连表面,通过初步的试错优化来选择和封闭生长参数,并最终通过实验设计来优化。这产生了几毫米的潜在可用PUF区域,然后将其图案化并与初始试验接触。

英文摘要:

The exponentially growing number of interconnected devices in the Internet of Things poses an increasing amount of challenges to the field of cyber security and encryption. For authenticated use and communication, each device must securely store and apply secret keys without giving a potential attacker the possibility to access them neither by software nor hardware attacks. In 2002, the concept of Physical Unclonable Function emerged to counteract the inherent threats, associated with this trend. Physical disordered systems are excited by external stimuli and can thereby be uniquely identified. 2D materials have profoundly different characteristics when isolated from their bulk form to few- or monolayers. Transition metal dichalcogenides represent a potential PUF candidate since, unlike graphene, they feature a bandgap and are thus semiconducting. Furthermore, a random percolation network can be formed from them, which is expected to possess an electrical response that is uniquely identifiable yet unpredictable. This work has built the foundation for implementing a PUF consisting of a TMD, namely tungsten disulfide. The material has been synthesized using chemical vapor deposition in the close proximity approach. In order to fabricate a large-scale inter-connected surface consisting of WS2, the growth parameters are selected and enclosed by a preliminary trial and error optimization and ultimately optimized by Design of Experiments. This yields a potentially available PUF area of several millimeters, which was then patterned and contacted with initial trials.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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