Chiro‐Optoelectronic Encodable Multilevel Thin Film Electronic Elements with Active Bio‐Organic Electrolyte Layer

Abstract

It is suggested that chiral photonic bio‐enabled integrated thin‐film electronic elements can pave the base for next‐generation optoelectronic processing, including quantum coding for encryption as well as integrated multi‐level logic circuits. Despite recent advances, thin‐film electronics for encryption applications with large‐scale reconfigurable and multi‐valued logic systems are not reported to date. Herein, highly secure optoelectronic encryption logic elements are demonstrated by facilitating the humidity‐sensitive helicoidal organization of chiral nematic phases of cellulose nanocrystals (CNCs) as an active electrolyte layer combined with printed organic semiconducting channels. The ionic‐strength controlled tunable photonic band gap facilitates distinguishable and quantized 13‐bit electric signals triggered by repetitive changes of humidity, voltage, and the polarization state of the incident light. As a proof‐of‐concept, the integrated circuits responding to circularly polarized light and humidity are demonstrated as unique physically unclonable functional devices with high‐level logic rarely achieved. The convergence between functional nanomaterials and the multi‐valued logic thin‐film electronic elements can provide optoelectronic counterfeiting, imaging, and information processing with multilevel logic nodes.

Trainable Bilingual Synaptic Functions in Bio-enabled Synaptic Transistors

“…By deploying the CNC/PEG/NaCl electrolyte into the element of an EGT, it allows exploring how the presence of water molecules tunes the volatility, thus balancing the excitatory and inhibitory functions. Note that the absorption and desorption of water molecules cause expansion or shrinkage of chiral pitch, resulting in a reddish and greenish color appearance, corresponding to high and low RH conditions in the system, respectively. , The photonic input 2 is additionally introduced to emulate the process by which the human brain obtains information from the outside world through the visual system. For example, in the demonstrated neuromorphic device, the green and red letters can be accurately identified by modulating the polarization state of light and humidity conditions (Figure b).…”

“…Note that at low and high humidity conditions, CNC composite layers show green and red reflection colors, respectively, and the right-handed circularly polarized light (RCPL) of 540 and 730 nm wavelengths shows high transmittance through the layers compared to left-handed circularly polarized light (LCPL) ( Figure S9 ). 54 The transfer characteristics of PBTTT-C14 and ITIC-F synaptic transistors were analyzed depending on the polarization state of the incident light and humidity conditions ( Figure S10 ).…”

A supramolecular assembly strategy towards organic luminescent materials

“…Chirality is one of the most fascinating features in nature. Circularly polarized luminescence (CPL) has a promising application in display devices, 41 chiral molecular switches, 42 biological coding 43 and other fields. Recently, the Ma group 44 designed a supramolecular helical polymer comprised of a chiral guest (S/R)-AHBP and CB [8], which made a breakthrough in realizing pure organic supramolecular RTP polymers with CPL in aqueous solution (Fig.…”

Recent Advances in Flexible CNC‐Based Chiral Nematic Film Materials

“…Han et al successfully prepared a circularly polarized light and humidity-responsive photoelectric film by combining CNC chiral nematic phase with printed organic semiconductor channels. [96] This film is further applied to photoelectric encryption logic elements to realize powerful multilevel logic node imaging and information processing functions. In addition, photoelectric signals can be converted into a variety of information forms, such as numbers, letters, and patterns, thus providing unique encoding and decoding capabilities for image encoding and information processing.…”