Hemant Rohera — Bioelectronics, Energy Storage and Power Electronics

The idea that the electrical state of a cell has something to do with immune function turns up often in writing about bioelectronic medicine, usually stated far too broadly. It is worth setting out what the immunology literature actually describes, because the real version is more specific and more interesting than the loose one. An immune cell is an electrically active cell Lymphocytes are not passive bags of protein. Feske, Skolnik and Prakriya, reviewing the field in Nature Reviews Immunology , describe lymphocyte function as regulated by a network of ion channels and transporters sitting in the plasma membrane of B and T cells. That network sets the cytoplasmic concentrations of several cations — calcium, magnesium and zinc — and those concentrations act as second messengers. What they go on to regulate is not peripheral. It is cytokine production, differentiation and cytotoxicity: three of the things an immune response fundamentally consists of. The repertoire t...

“Cell charge” is a phrase that gets used loosely, and it deserves better, because the thing it points at is real, measurable and well studied. This note sets out what is actually established about the electrical state of a cell, what that state has been shown to control, and where the boundary of that evidence sits. What the phrase refers to Every living cell maintains a difference in electrical potential across its membrane, conventionally written V mem , with the inside negative relative to the outside. In a resting ventricular heart muscle cell it is around −90 millivolts; in a typical neuron, around −70. It is produced by unequal distributions of sodium, potassium, calcium and chloride ions either side of a membrane that is selectively permeable to them, and it is actively maintained: the sodium–potassium pump spends ATP continuously to hold the gradients up. Two things follow immediately. First, this is not a property of nerve and muscle alone ...

A claim that comes up constantly in bioelectronic medicine is that small electrical currents change what cells do. It is a claim worth taking seriously, because it is testable, and because the published work behind it is considerably more specific than the way that work usually gets summarised. This note takes four studies from the peer-reviewed literature and, for each one, states three things: what was measured, in what preparation, and what actually follows from it. It closes with the rule that governs how any of this may be applied to a particular device — including mine. The starting condition: every cell holds a voltage The reason electricity is relevant to cell biology at all is that cells are already electrical. A living cell maintains a difference in electrical potential across its membrane, with the inside negative relative to the outside. In a resting ventricular heart muscle cell that potential is around −90 millivolts; in a typical neuron it is around ...

Thermal management of a battery pack is usually discussed as a cooling problem: how much air, how much coolant, how big a plate. That framing quietly assumes the heat is a given and the only question is how fast it can be carried away. It is worth turning the question around. The heat is not a given. It is generated inside the cell, by a mechanism with a known governing equation, and the dominant term in that equation is set by the current waveform the pack is asked to accept. Change the waveform and you change the heat at the point where it is made, rather than chasing it once it exists. This note sets out that argument in full: where the heat comes from, why the peak matters more than the average, what the elevated-temperature literature says follows from it, what a capacitive buffer on the DC link changes about the picture, and — stated plainly, because it is the part most often skipped — what would have to be measured before anyone claimed a thermal benefit for a spe...

By Hemant Rohera · Founder & CTO, Rohera Healthcare & Technology Pvt. Ltd. (eMedica) · Inventor, US Patent 12,226,183 B2 · ORCID 0009-0005-3275-1743 · 11 September 2026 The patent register and the research record — every grant with its number and date, and the exact scope of each independent test report — are published at hemant-rohera.vercel.app/research.html . Read this first. eMedica is a non-invasive adjuvant medical device intended to be used alongside prescribed medication and standard medical care, under the supervision of a qualified healthcare professional. It does not replace any prescribed medication, clinical protocol or medical procedure. Continue all prescribed medications unless changed by your treating physician. This article is educational and is published by the device's manufacturer. Every one of the roughly 37 trillion cells in a human body holds a voltage across its outer membrane. That voltage is the signal that releases insulin from a panc...

Most of what I publish here is a single argument worked through in public: that a technical claim is only worth what its evidence is worth, and that the honest way to present engineering work is to state the evidence status of every number alongside the number itself. That principle is easy to assert in a blog post. It is harder to hold to across a portfolio. So the whole record now sits on one page, structured so that a reader who wants to disagree with me can find the thing to disagree with: the research and publications record . This post explains what is on it and how to read it. Three technical reports Three reports are written and prepared for deposit in an open research repository under CC BY 4.0, each to receive a permanent DOI. The titles and full abstracts are published now, so the work is readable and citable while the deposits are completed. The DOIs are not yet issued , and I would rather say that plainly than let a reader assume otherwise. 1. A hybrid battery...