47 innovations from Bar-Ilan University, available for licensing, co-investment, or spin-out through BIRAD.
Naveh Doron
Leveraging a single, widely tunable photodetection element, we propose to realize an on-chip spectrometer covering the mid-infrared (mid-IR) wavelength range from 2 to 8 um. This invention will demonstrate the feasibility of realizing on-chip spectroscopy based on a single, microscale device. This demonstration will also lay the foundation for the future realization of chip-scale spectral imaging in the mid-infrared wavelength range.
Desiatov Boris
he invention relates to a hybrid optical phased array (OPA) platform combining thin-film lithium niobate (TFLN) photonic circuits with three-dimensional polymer end-fire antennas fabricated using two-photon polymerization. The architecture enables compact, broadband, and high-speed optical beam steering by integrating electro-optic phase control with elevated 3D antenna arrays. The technology is suitable for applications including LiDAR, free-space optical communication, and adaptive photonic systems.
Naveh Doron
A computational spectrometer system based on a voltage-tunable GeSe-InSe heterojunction device that addresses nonlinear photoresponses through piecewise linearization using classification and hierarchical clustering models for accurate spectral reconstruction.
Asaf Albo
In this study we present an analysis of a novel practical m-plane GaN three and two quantum well terahertz quantum cascade lasers (THz QCLs) using Non-equilibrium Green’s function (NEGF). We examined the performance of this unique designs, exhibiting their capabilities for high-temperature operation and extended Terahertz frequency coverage. For the three quantum well structure, at low temperatures, a peak gain of 87 cm-1 was observed, which decreased to ~ 24 cm-1 at 300 K, still above the expected losses. The research shows lasing at ~6 THz, outperforming standard GaAs THz-QCLs’ frequency coverage. This work provides valuable insights into the development of advanced GaN-based THz QCLs with above room temperature performance and expanded frequency coverage, bridging the gap in Terahertz technology.
Fridman Mordechai
The present invention relates to optical and quantum sensing systems that utilize synthetic temporal gauge fields to perform ultrafast and noise-resilient measurements. More specifically, the invention describes an interferometric sensing architecture in which an external signal is converted into a gauge-invariant temporal phase, analogous to a temporal Aharonov–Bohm (AB) effect, and is subsequently measured through interferometric or correlation-based detection. In the disclosed system, correlated optical modes are generated using a parametric process, such as four-wave mixing or parametric amplification, forming a temporal interferometric structure. The optical modes propagate through a dispersive or time-lens-based section, in which a time-dependent modulation is applied. This modulation produces a synthetic temporal gauge potential that induces a relative phase shift between the correlated modes. The accumulated phase depends on the temporal profile of the modulation and constitutes a gauge-invariant quantity analogous to the Aharonov–Bohm phase in conventional electromagnetic systems. After the gauge-induced phase is acquired, the optical modes are recombined in a second parametric or interferometric stage. The output signal depends on the accumulated gauge phase and is detected using intensity, interferometric, or correlation-based measurements. Because the sensed quantity is a gauge-invariant phase, the system exhibits reduced sensitivity to local perturbations, amplitude noise, and certain environmental fluctuations, thereby enabling more robust and accurate measurements. The invention enables sensing of a wide variety of external signals, including but not limited to: ultrafast phase or delay variations, time-dependent electrical or optical modulation signals, radio-frequency or microwave waveforms, dynamic optical path variations. The sensing mechanism is fundamentally different from conventional phase or amplitude modulation techniques, as the measured signal is encoded in a synthetic gauge phase rather than in a local field interaction. This approach allows ultrafast operation, compatibility with both classical and quantum optical regimes, and the possibility of enhanced sensitivity through parametric or correlation-based readout. The disclosed architecture may be implemented using temporal SU(1,1) interferometers, time-lens systems, dispersive optical elements, electro-optic modulators, or other time-dependent phase modulation devices. The system can operate with classical optical fields, single photons, or entangled photon pairs, and may be configured for various sensing, metrology, and signal-processing applications.
Zalevsky Zeev
Intraocular pressure (IOP) measurements comprise an essential tool in modern medicine for the early diagnosis of glaucoma, the second leading cause of human blindness. The world's highest prevalence of glaucoma is in low-income countries. Current diagnostic methods require experience in running expensive equipment as well as the use of anesthetic eye drops. We present herein a remote photonic IOP biomonitoring method based on deep learning of secondary speckle patterns, captured by a fast camera, that are reflected from eye sclera stimulated by an external sound wave. By combining speckle pattern analysis with deep learning, high precision measurements are possible. The method was tested under artificially varying eye pressures on a series of 24 pig eyeballs, found to be similar to human eyes. As a low-cost procedure, it has the potential to meet clinical needs in low- and middle-income countries and at points of care everywhere.
Strelniker Yakov
We predicted that the negative permittivity can be used for attraction of like charged particles instead of repulsion. This can lead to creation of electron-electron pairs similar to Cooper pairs (with possibilities to reach superconductivity at room temperature). This phenomenon can be used also for nucleus-nucleus pairing with possibilities of low energy nuclear fusion. Negative values of permittivity we propose to achieve due to the localized surface plasmon resonances in metamaterials. These resonance frequencies can be varied over a wide range by application of static magnetic or electric fields.
Tischler Yaakov Raphael
Mapping tip-enhanced near-field optical signals by modulating the tip-sample distance at multiple frequencies simultaneously and observing the near-field heterodyne beating signal, between the two near field modulated “light-fields”. This heterodyne beat signal only occurs from the near-field interaction and therefore it provides a means of detecting the near-field, without background signals from the incident light excitation interacting in the far-field with the sample or with the AFM probe.
Naveh Doron
A system comprising one or more spectrometers coupled to one or more battery cells, wherein the one or more spectrometers generate one or more electrical signals in response to an incident source in proximity to the one or more battery cells, and wherein the electrical signals comprise spectral data associated with emissions from the one or more battery cells. The system further comprising a computing device configured to receive the spectral data and one or more operating variables, compare the spectral data with reference spectral data and the one or more operating variables, and determine a presence of abnormal operating conditions of the one or more battery cells based on the comparison.
Mandel Yossi
The invention relates to a stimuli-responsive carrier system that enables controlled, transient, and reversible release of therapeutic and other functional substances. The system is based on a polymeric matrix crosslinked by redox-active metal ions, whose mechanical properties and diffusivity can be reversibly modulated by externally applied stimuli, such as ascorbic acid (Vitamin C) or visible light irradiation. Upon application of the stimulus, the matrix transiently softens and becomes permeable, allowing controlled release of incorporated cargos. Removal of the stimulus results in autonomous recovery of the matrix to its original, mechanically robust state, halting further release. The dissipative mechanism enables repeated on-demand release cycles from a single carrier depot without permanent degradation. The invention has broad applicability, including medical, ocular, industrial, and environmental uses. The invention is a collaborative effort of HUJI (Prof. Itamar Willner) and BIU (Prof. Yossi Mandel). BIU will share parts of the invention that are related solely to ocular use of the application.
Ozana, Nisan
The present invention relates to a non-invasive optical system and method for determining intra-facial connectivity and face–brain connectivity using full-field speckle analysis. The system is configured to illuminate substantially the entire facial surface using coherent or partially coherent light and to capture dynamic speckle patterns generated by facial tissues, including microvascular activity, neuromuscular activity, and micromovements. The captured speckle data are processed to extract temporal and spatial features including, but not limited to, speckle contrast, intensity fluctuations, temporal decorrelation rates, autocorrelation functions, frequency-domain characteristics, phase relationships, and vibration-related parameters. The facial surface is segmented into multiple regions of interest, each generating time-resolved speckle-derived signals. Functional connectivity within the face (intra-facial connectivity) is computed by calculating correlation, coherence, mutual information, phase synchronization, or other statistical or signal-processing metrics between time-series signals derived from different facial regions. These computations generate connectivity matrices and network representations reflecting dynamic coupling patterns across the face. In certain embodiments, brain activity signals are acquired simultaneously or sequentially using electrical, optical, acoustic, or multimodal sensing techniques. The facial speckle-derived signals are synchronized with brain activity measurements to calculate face–brain connectivity using cross-correlation, coherence analysis, causality estimation, or other cross-modal coupling methods. The resulting connectivity maps may reflect functional interactions between facial dynamics and neural activity. The system may further include data processing modules, machine learning algorithms, and classification models configured to identify patterns associated with neurological, psychiatric, or neuromuscular conditions. The invention may be implemented as a stationary, portable, or wearable device and may operate in real time or offline analysis modes. By providing quantitative measurements of intra-facial and face–brain connectivity, the invention enables objective assessment, monitoring, and biomarker development for applications including mental health disorders, addiction, depression, cognitive impairment, neurodegenerative diseases, and facial paralysis of different etiologies.
Cohen Eliahu
Systems and methods are described for quantum information retrieval. An example system may include a quantum cloning unit, a photon number splitting (PNS) unit, and a weak measurement unit to enhance the accuracy and reliability of quantum state estimations without introducing substantial decoherence. The quantum cloning unit may be used to generate approximate clones of a qubit. If the qubit is a multi-photon state qubit, then the photon number splitting (PNS) unit may be used to intercept the multi-photon state qubit and reflect a single photon from the multi-photon state qubit, which may then be subjected to quantum cloning. These qubits and qubit clones may then be subjected to weak measurements, which provides detailed analysis with minimal disturbance to quantum properties such as superposition and entanglement.
