摘要:
This application proposes the use of Cellular Non-Linear Networks (CNNs) as physical unclonable functions (PUFs). We argue that analogue circuits offer higher security than existing digital PUFs and that the CNN paradigm allows us to build large, unclonable, and scalable analogue PUFs, which still show a stable and repeatable input-output behaviour. CNNs are dynamical arrays of locally-interconnected cells, with a cell dynamics that depends upon the interconnection strengths to their neighbours. They can be designed to evolve in time according to partial differential equations. If this equation describes a physical phenomenon, then the CNN can simulate a complex physical system on-chip. This can be exploited to create electrical PUFs with high relevant structural information content. To illustrate our paradigm at work, we design a circuit that directly emulates nonlinear wave propagation phenomena in a random media. It effectively translates the complexity of optical PUFs into electrical circuits. This, leading to better practicality, while maintaining or even improving the security properties of their optical counterparts.
摘要:
A system for security purposes comprising: - an inner structure that is accessible by a plurality of terminals, - wherein the system allows a measurement on the inner structure of the system by using a challenge signal comprising a plurality of input signals applied in parallel to the terminals and by receiving a response signal dependent on a setting of the challenge signal and dependent on the inner structure of the system, wherein - the system comprises at least two features of the group containing: > the ability to process non-binary input signals, > a bandwidth at the terminals and an information content ensuring a incomplete readout of the information content within a predefined access time period, > a spatial and/or logical disorder of the inner structure, > a non-linear relation between the input signals and output signals appearing at the terminals, and that - from the knowledge of a subset of the predefined settings and of associated response signals, the response signal associated with a particular setting outside the subset is not predictable with a probability higher than the probability for guessing the response signal.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung thermoelektrischer Bauelemente oder Peltier-Elemente sowie diese Bauelemente aus gedruckten Siliciumschichten, hergestellt aus Dispersionen von zumindest teilweise dotierten, halbleitenden Partikeln, insbesondere aus Silicium, Germanium oder Silicium- Germanium-Legierungen.
摘要:
The invention relates to a method for separating two material layers in such a way that both separated material layers remain essentially intact. According to the invention, an electromagnetic beam is radiated on an interface separating said layers and marking the place where the material layers are to be separated or in an area close to this interface through one of the two material layers. The electromagnetic beam is absorbed in the interface or in the area close to the interface. The absorption induces a separation of the materials on the interface.
摘要:
Ein Strahlungsdetektor (10), insbesondere zur Detektion von Röntgenstrahlung, umfasst ein Trägersubstrat (11), eine Detektorschicht (12), die GaN enthält, auf dem Trägersubstrat (11) angeordnet ist und eine Dicke geringer als 50 μm aufweist, und Kontaktelektroden (13), die mit der Detektorschicht (12) ohmsche Kontakte bilden. Es wird auch eine Messeinrichtung beschrieben, die mit mindestens einem derartigen Strahlungsdetektor (10) ausgestattet ist.
摘要:
Porous silicon composed of particles having an average diameter of 10 to 100 nm, the particles having pores throughout, and the particles in turn containing partially fused crystallites having an average diameter of less than 5 nm.
摘要:
The invention relates to a radiation detector (10), in particular for detecting x-ray radiation, comprising a carrier substrate (11), a detector layer (12) which comprises GaN, is arranged on the carrier substrate (11) and has a thickness less than 50 µm, and contact electrodes (13) which form ohmic contacts with the detector layer (12). The invention also relates to a measurement device which is equipped with at least one such radiation detector (10).
摘要:
The present application relates to semiconductor devices, in particular to a device for monitoring a cell signal such as an electrical signal produced by living cells in response to external stimulation, optionally in real time, comprising (a) at least one discrete area comprising a high electron mobility transistor (HEMT); and (b) non - excitable cells attached to said HEMT (HEMT element) for example, fibroblasts, HEK, CHO cell lines, keratinocytes, etc. Preferably, the HEMT is an AlGaN/GaN FET. Accordingly, the device can be applied in uses and methods for monitoring a cell signal such as an electrical signal produced by living cells in response to external stimulation, optionally in real time. Likewise, the device can be applied for screening compounds that reverse, protect from and/or shield cells from external stimuli which cause damage to cells. Also, kits comprising the device are disclosed.
摘要翻译:本申请涉及半导体器件,特别涉及一种用于监视细胞信号的装置,例如可选地实时地响应于外部刺激而由活细胞产生的电信号,包括(a)至少一个离散区域,包括高 电子迁移率晶体管(HEMT); 和(b)附着于所述HEMT(HEMT元件)例如成纤维细胞,HEK,CHO细胞系,角质形成细胞等的不可兴奋细胞。优选地,HEMT是AlGaN / GaN FET。 因此,该设备可以应用于可选地实时监视响应于外部刺激的由活细胞产生的电信号的细胞信号的用途和方法。 同样,该装置可用于筛选从外部刺激反向,保护和/或屏蔽细胞的化合物,从而引起细胞损伤。 此外,公开了包括该装置的套件。
摘要:
Porous silicon composed of particles having an average diameter of 10 to 100 nm, the particles having pores throughout, and the particles in turn containing partially fused crystallites having an average diameter of less than 5 nm.
摘要:
Nanoscale silicon particles that have a BET specific surface area in the range of 100 to 800 m2/g, that consist of an essentially round, mostly unfacetted crystalline Si core surrounded by an amorphous shell, the amorphous shell comprising silica and hydrogen-terminated silicon atoms and have a paramagnetic defect density in the range of 1013 to 1017 1/mg. Essentially hydrogen terminated, nanoscale silicon particles having a paramagnetic defect density in the range of 10 12 to 10 16 1/mg obtained by treating the nanoscale silicon particles with hydrofluoric acid. Essentially alkyl terminated nanoscale silicon particles having a paramagnetic defect density in the range of 3xl0 12 to 3xl0 16 1/mg obtained by treating the essentially hydrogen terminated, nanoscale silicon particles with one or more compounds selected from the group of 1-alkenes and/or 1-alkynes. Partially alkyl terminated nanoscale silicon particles having a paramagnetic paramagnetic defect density in the range of 3xl0 12 to 3xl0 16 1/mg obtained by treating the nanoscale silicon particles with one or more compounds selected from the group of 1-alkenes and/or 1-alkynes.